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AR3030 operating manual 1

1.
2. supply amp DC lead a Power digcone Tape recorder Ori el ae Q ram cr400 gt tape lead LA3ZO loop aerial Q x gt WA7000 P Sa active aerial Computer We aoknowiedoa RADY Farin caplet tochave service information available External ae Service informatid if purely for int eason a service manual should be available through dealers as A r6 DC3000 For connection to a separate external power supply or car battery an optional DC lead is available 45 AARSOSO operating manual Computer control software A hands off IBM PC computer program is planned to control the AR3030 via the RS232C port A separate serial connecting lead will also be required LA320 loop aerial Desktop active loop aerial for portable operation away from a base aerial such as when while travelling on business or holiday Frequency coverage is 1 6 to 15MHz with optional elements to cover 0 2 to 0 54MHz and 0 54 to 1 6MHz WA7000 wide band active whip aerial Compact aerial designed for installation where space is a problem The WA7000 is active on the lower frequency band 30kHz to 30MHz and passive on the higher band between 30MHz to 2000MHz DA3000 VHF UHF discone aerial Ideal for use wh
3. On position Ensure the label MEMO is not displayed on the LCD if it is then press the VFO key once until the label MEMO is cancelled When the above procedure is complete the receiver is ready to accept frequency input change of mode etc As with all modern microprocessor controlled equipment the AR3030 has enormous potential and capabilities Note The AR3030 uses an EEPROM Electronically Erasable Programmable Read Only Memory for storage of memories metre band information and other parameters A permanent storage EEPROM has the advantage of not requiring a back up battery to maintain data even when the receiver is disconnected from a power supply The EEPROM may be over written many thousands of times In order to provide the maximum EEPROM life span a fuzzy logic has been applied to the storage system which attempts to intuitively determine when to store new data For this reason the last frequency used in VFO mode via the tuning control or keypad will not be recalled upon switch On unless you had listened to it for more than about 15 seconds the actual time depends upon many factors but typically ranges from 6 to 13 seconds Similarly when using the metre key if you haven t listened to a new frequency for more than 15 seconds or so it will not have updated the metre band data This can be used as a positive asset under certain circumstances when tuning through amateur radio bands etc and you
4. Ses rd Aerial wire x a v y N N K Ww Aerial wire Support pole Earth wire d rod Typical long wire aerial setup Magnetic balunddig wite aerials ae Betoni r r ad the rom the wire aerial into the receiver The balun transforms the impedance to a low level suitable for 50 OHM coaxial cable In this instance the path of feeder is unimportant and chances of noise entering the aerial system reduced The 50 OHM BNC aerial input of the AR3030 should be used and selected accordingly Dipoles For the very best results you should consider a dedicated aerial such as a single or multi band dipole or similar aerial The problem with a wide coverage 4g HARSOS0 operating manual receiver like the AR3030 is that for the ultimate results many dedicated aerials are required to cover the whole spectrum This may involve complex aerial switching and reduces the ability to quickly monitor many bands As a compromise it may be worth making up a dipole aerial for a band of particular interest and have a second random wire for general listening It is quite easy to make a dipole for shortwave for that matter one can be easily made up for VHF should you have the optional VHF converter fitted It is worth noting that dipoles are also quite effective on two and three times their design frequency so you can cover a few bands at once Reception
5. 100 memories also hold the full range of settings making transfer to and from memory straight forward and very convenient Optional VHF converters Two optional VHF converters are planned AM 108 00000 MHz to 139 99999 MHz FM 140 00000 MHz to 169 99999 MHz AARSOS0 operating manual One converter may be internally fitted to further extend the receive coverage of the receiver A separate 50 OHM BNC aerial socket is fitted to the rear case of the AR3030 in order to simplify connection to a dedicated VHF aerial SSB Single Side Band who uses it SSB is a general term given to two additional modes of operation USB for upper side band and LSB for lower side band Generally speaking SSB is used by long range services such as oceanic airband ship to shore and Amateur band to increase the operational coverage of the radio transceivers Most point to point services use USB including Amateur band By convention Radio Amateurs use LSB below 10MHz True carrier insertion is used for USB LSB and CW with a separate SSB highly selective filter being used for these modes A BFO control which operates in CW USB LSB amp FAX modes has also been provided so that the CW note may be optimised to suit individual preferences and to form a simple manual form of passband tuning particularly helpful on a crowded frequency The inclusion of SSB on the AR3030 adds a new dimension to the listening potential of the receiver when compared to AM broadcast
6. 2 AARSO5SO operating manual This three position slide switch allows selection of aerial input In the left position the high impedance wire input is selected In the centre position a small level of amplification along with impedance matching is applied to the BNC aerial input to permit operation from a small high impedance telescopic whip aerial In the right position the 50 OHM BNC aerial socket is selected allowing connection to low impedance coaxial aerials such as dipoles magnetic baluns loop aerials AOR LA320 coaxial fed systems like the AOR WA7000 active aerial or an aerial tuning unit 5 35 WHIP ANT 50 OHM LW HF ANT socket This is a high quality 50 OHM BNC aerial input socket BNC is the commercial standard and offers superior performance to the cheaper SO239 socket Of course inter series adaptors are widely available so connection to almost any aerial system should not present a problem 5 36 VHF ANT VHF socket This is a 50 OHM BNC aerial input socket for use when an optional VHF converter is fitted Suitable aerials include telescopic whips VHF dipoles groundplanes and discones 5 37 LIGHT switch The LCD and S meter illumination is selectable On Off via this switch This facility is particularly useful if the receiver is being operated from batteries in order to reduce the current taken by the receiver and lengthen the operational time 5 38 BATT compartment This is the battery compartment Access
7. there and indicators are also seven LED indicators to show current mode selected Either key may be e a pressed to select mode AM SAM FM AP ise fe 5 4 Liquid Crystal Display LCD e a gg Display of most data excluding mode which MODE gt is displayed via LEDs is provided via a high contrast wide angle backlit green LCD A rear panel switch is provided so that the illumination may be switched Off to help preserve battery power should the set not be powered via the external power connection I LILI LI CI MHz eow a ee ee E a E a E a E a REMOTE A kHz o oo HIGH i0086 B NRW FAST LIII memo scan pass Low 2008 A NOR SLOW 5 4 ARSOS0O LCD full pattern shown 5 5 VFO key VFO is not really the correct name but rather a historical title for current tuning device it stands for Variable Frequency Oscillator As the AR3030 uses DDS no variable frequency oscillator is actually used in this up to date receiver but the term is generally understood as meaning current setting of a rotary dial The AR3030 has two VFOs two selectable tuners so that the user may quickly swap between and tune around two frequency bands with a single press of the VFO key VFO status is indicated by A or B on the LCD If the word MEMO is 12 AARSOS0 operating manual displayed on the LCD p
8. Before memory channel scan can operate you must first store data into at least two channels of course you can store data in to all 100 should you choose 56 HAARSOS0 operating manual The receiver must first be placed into VFO mode If in doubt press the VFO key and check that the MEMO legend is not shown on the LCD Press SCAN to start memory channel scan from the memory channel last used Both the MEMO and SCAN legends will appear on the LCD to confirm operation All memory channels containing data will be scanned but empty channels will be skipped To stop the scanning process press SCAN again The receiver will continue to receive on the channel where scan has been stopped but will return to VFO mode copying the data automatically To resume scanning once again simply press SCAN 6 17 Program Memory Channel Scan It is possible to instruct the AR3030 to scan a group of memory channels rather than all channels which contain data This is a convenient method of scanning a few memory channels without needing to delete temporarily unwanted memory channels The following example assumes data is stored in about the first twenty memory channels you wish to scan only channels 5 to 12 inclusive Ensure the receiver is in VFO mode if in doubt press the VFO key and ensure that MEMO is not displayed Press SCAN to start scanning Press the ATT key to inform the receiver that you wish to input p
9. LCD Mode selection is displayed via a series of LEDs Although 5Hz tuning steps are available in all modes coupled to true automatic carrier insertion in USB LSB FAX amp CW a separate BFO control is selectable in USB LSB FAX amp CW to provide even greater flexibility producing a manual form of pass band tuning While in any receive mode it is possible to increase the tuning steps from five Hz display resolution 10Hz to hundreds of Hz and kHz by pressing the kHz key while in VFO mode Selection of MHz tuning may also be accomplished in VFO mode by pressing the MHz key The position of the underscore character indicates selected tuning rate A smooth action rotary tuning control with a finger tip hollow is provided to ensure a high level of operating pleasure convenience and versatility Frequencies may be entered directly via the numeric keypad great versatility is provided by careful attention to firmware programming Frequencies may be entered as kHz i e 6 0 9 0 kHz MHz i e 6 0 9 0 MHz or the band may be selected i e 4 9 mtr returns to the last frequency used on that band probably no other receiver offers such convenience All broadcast bands are recognised as well as region 1 2 amp 3 Amateur bands i e 80 75 49m etc Twin VFOs retain all necessary information such as frequency mode I F bandwidth audio filter attenuator setting and tuning step size and BFO status On Off
10. Off when running from an external power supply or internal batteries To switch the set On connect a suitable power source and depress the switch it will latch in To switch the receiver Off press the switch a second time the switch will latch out 5 2 Headphone socket S POWER B f p Ower switch _ sitia g 57 headphone socket O AS 5 25 S meber PHONES 70 AARSO50 operating manual 77 5 5 6 7 8 9 10 11 12 13 p p E O PHONES UICE M He oS q q HIGH 1008 8 NRW FAST MEMO Low 20483 A non slow l wencry cq TONE ATT VFO BW AGC BFO PITCH Please refer to the detailed information Section item AR34030 receiver front panel view AARSO5SO operating manual This quarter inch socket is located on the top left hand side of the front cabinet directly underneath the power switch A pair of headphones or earphone may be connected with an impedance of 8 OHMS or greater When this headphone socket is used the internal speaker and any external speaker will be automatically disconnected 5 3 Mode keys and indicators D 5 Mode keys There are two mode keys on the front panel indi located between the S meter and LCD
11. connecting or disconnecting the receiver Note The DC input socket uses a special type of connector This plug socket is of a moulded type and pre wired positive is the RED wire The chassis of the receiver is negative ground The UK power supply has two cables attached One is terminated in the appropriate power jack plug to fit the DC input socket of the AR3030 The second has two bared wires ready for connection to a standard 3 pin mains plug A 3 Ampere fuse should be used in the plug and the cable is colour coded as follows Brown Live Blue Neutral ARICIO operating manual The AR3030 power supply has no connection to the EARTH pin of the mains plug However a separate earth point is provided on the rear panel of the AR3030 for connection to a water pipe central heating system radiator or external earth rod If fitting a separate external earth rod consider the implications carefully is your mains supply uses Protective Multiple Earth PME system If in doubt consult an expert electrician Never earth to a gas pipe Always disconnect the power supply from the AC mains supply when not in use Always remove dry batteries when exhausted or if the AR3030 is not going to be used for a while This will avoid leakage which could seriously damage the receiver Access to the battery compartment is via a removable sub panel on the rear panel Always switch the receiver off when inserting or removing batteries If fitting batteri
12. control via the 9 pin female D type rear connector section 5 31 using a simple RS232 cable without the need for an interface 7 1 Connection Connection to an IBM PC 25 pin D type serial port requires the following connections IBM PC 25 pin AR3030 9 pin 7 Frame amp signal groud 5 pins 7 amp 8 at the receiver end of the cable 7 2 Communication parameters If using a terminal driver configure the following communications parameters 40 AARSOS0 operating manual Type of communication Semi duplex no nagar jal receive while FSI ROZAL computer contral por transmitting nals Baud rate speed 4800 or 9600 BPS HHH refer to start up er Stop bit 2 Bits Data bit length 8 Bits Tan Parity None Pin 1 No connection X parameter None Pin 2 Receive data RXD Pin 5 Transmit data TXD Pin 4 No connection Pin 5 Signal ground GND Timing chart for transmit and receive mode m oe eer Pin amp CTS Pin 9 No connection let 2nd CMD LF CMD TERMINAL TxD STEP 2 7 3 Start up afdend gt lt ae ae TxD Start up Type either 4800 or 9600 fENTHo start Confirm the correct conneetions tsy sending dummy CR LF Note No need to send LF Exit from software Type Q to end the remote operation via computer 7 4 Command transmission in terminal mode Step 1 Step 2 Step 3 Transmit one or more of the commands listed in
13. delete a particular memory channel or whole bank of channels This is especially true if you are reorganising the memory contents or planning to use the program scan facility Deleting a single memory channel While in VFO mode press the M in key and the LCD will show the first available memory channel flashing LI JL TiTi a Mrz UIC IOLI uvu HIGH Now press th BASS key which drenges the LKCD t showoboth dEL CH and legends 54 AARSOS0 operating manual Lo ru Enter the two digit m mbry channel nunbber Which you wish to erase such as 2 3 The legefd will be replaced by memory channel number which you have selected 23 and will flash Complete the elgt sequence by pressing the ENT BS key A beep confirms correct data en ri atid the completion of the delete sequence The receiver will automatically revert to VFO mode To abort memory delete press the M in key Deleting a block of memory channels Let us assume that you wish to delete memory channels 30 to 45 inclusive While in VFO mode press the M in key and the LCD will show the first available memory channel flashing Lt PVP tr Now press the megs aL lop to show both dEL CH and legends HIGH A_ wor stow JAJC Enter the lower t wode Eee ai which you wish to erase i e 3 0 The le edee will be replaced by memory channel number which you have selected 30 and will flas
14. easy to keep the memory channel allocation sequential and tidy without having to remember which channels have already been used Manual It is possible to store VFO data into any of the 100 memory channels and over write current data if required 55 AARSO5SO operating manual Let s assume that you have 14 25000 MHz USB displayed in VFO mode and you wish to write into memory channel number 25 which has not been previously used Press M in followed by the channel number desired memory channel number 2 5 ignore any automatically displayed channel number before 25 was keyed The chosen channel number will flash to indicate memory write mode To complete the sequence press the ENT BS key a beep sounds to confirm correct entry Note If the memory channel already had data present then the previously stored data would cause the whole LCD to flash twice and a low level beep sounded to draw your attention that you will over write data You must wait for the two flashes to execute before completing the sequence with the ENT BS key A high pitched beep confirms correct entry and completion of the memory input sequence Of course if you decide not to over write the data which has been displayed simply select another memory channel using the keypad To abort memory input press MEMO 6 15 Deleting memory contents Although you may over write memory channels time and time again there will be occasions when you may wish to
15. only shortwave receivers All Mode As well as SSB the AR3030 can receive all other popular modes AM Amplitude Modulation used mainly by broadcast stations and some other services such as VHF commercial airband with the optional VHF converter fitted Synchronous AM double side band used to combat fading on the shortwave bands NFM Narrow band Frequency Modulation little used on the shortwave bands but found on the UK CB radio and 10m Amateur Bands Bandwidth and filters The AR3030 is fitted with several standard IF bandwidths including a cascade 8kHz 6dB ceramic filter CFU455G2 for AM SSB FAX CW plus two audio bandwidths AM S AM 6kHz 3cB in the normal position using the legendary Collins eight resonator mechanical filter 526 8636 010 and a 2 4kHz 6dB Murata ceramic filter CFJ455K6 in the narrow position Should the narrow CW optional PCB position not be used it is possible to fit an additional wider filter for AM such as Collins 8 5kHz 3dB 526 8561 020 Due to the I F cascade filter the widest possible filter is 8 5KHz USB LSB FAX 2 4kHz Murata ceramic filter CFJ455K6 An optional 2 5kKHz 3dB Collins eight resonator mechanical filter 526 8635 010 of higher specification may be 5 AEARSO5SO operating manual optionally fitted workshop fitting to replace the 2 4kHz filter Should the narrow CW optional PCB position not be used it is possible to fit the optional Collins 2 5kHz filter as an addition wh
16. returns the underscore to the right The position of the underscore determines the rate of tuning On shortwave the receiver will tune in either 5Hz steps 10Hz resolution 100Hz steps of 1kHz steps In a similar way you may decide to change the MHz readout using the rotary tuning control To accomplish this simply press the MHz key An under score _ will appear on the LCD underneath the MHz digit to confirm selection To return to fine tuning press the kHz key 6 2 Changing receive mode There are two mode keys on the front panel located between the S meter and LCD there are also seven LED indicators to show the current mode selected Either key may be pressed to change mode Any receive mode may be selected at any frequency within the receiver s shortwave coverage Generally speaking the following modes will apply AM Amplitude Modulation Used by broadcast services throughout the World on longwave medium wave and shortwave AM is also used by commercial airband 108 137MHz should you have the VHF converter option fitted For best results you will have to experiment with the setting of AGC between fast and slow S AM Synchronous AM the AR3030 uses double side band synchronous 24 AARSOSO operating manual detection This is a special form of AM reception capable of reducing fading on longwave mediumwave and shortwave signals especially at night The receiver must first be accurately tuned in stan
17. scan mode VHF only The scanning system is handled slightly differently on the VHF bands when an optional VHF converter is fitted During VHF scanning the position of squelch OPEN CLOSED determines when the set stops scanning and for how long Basically the receiver will scan the memory channels until the squelch opens it will then remain on the busy channel until the squelch closes again Itis then assumed that the channel has become clear so the set is ready to start scanning again However rather than immediately scanning the receiver will delay for a short time to allow for a reply from an airband control tower etc The programmable delay range is from 0 5 seconds to 3 seconds in 0 1 second increments The factory default is 1 5 seconds To alter the delay time VHF only ensure firstly that you are in VFO mode Press SCAN to start memory scan you may wish to use programme memory scan to select only VHF memory channels SF AARSO5SO operating manual Press AGC to inform the AR3030 that you wish to reprogramme scan delay The LCD will show dELAy 1 5 and the figures 1 5 flash on the LCD to confirm selection Ww Ww Let s assu tn wish to il 5 time from 1 5 tol 0 8 seconds Press 0 8 W W Jt GLUI Press EN Bai fo cdinpidte tne dehudnbelwnich is confirmed by a beep The scan delay time will now be 0 8 seconds 7 Computer control RS232C The AR3030 is capable of remote
18. time programming in scan mode VHF only 39 7 Computer control RS232C 40 7 1 Connection 40 7 2 Communication parameters 41 7 3 Start up and end 41 7 4 Command transmission in terminal mode 41 7 5 Monitoring the contents of received serial data 42 7 6 FORMAT 1 Contents of the received signal 42 7 7 FORMAT 2 Reading the receiver s signal strength 43 7 8 FORMAT 3 Transmitting the memory contents 43 7 9 Change the receive modes or Make new entries 43 8 Optional accessories 45 9 Trouble shooting microprocessor reset 46 10 Aerials antennas and earth systems 47 11 Propagation shortwave bands 51 12 Specification 54 AARSO5SO operating manual 3 Major features General The AR3030 offers the very latest technology through use of its DDS Direct Digital Synthesizer The legendary Collins 6kHz AM filter is fitted as standard to provide the highest levels of AM selectivity High stability is accomplished by the standard fitting of a TCXO Temperature Compensated Crystal Oscillator As the model name would suggest the tunable coverage is 30kHz 30 MHz with 29 999995 MHz being the actual upper limit of tuning using silky smooth 5Hz steps The AR3030 offers all mode operation as standard AM S AM double side band synchronous USB LSB CW FAX amp FM All necessary information relating to frequency filter setting etc is presented via a highly visible switchable backlit custom
19. 7 3 and 7 9 followed by CR LF Carefully observe the effects of step 2 and step 3 when commands are continuously sent Note No need to add LF Confirm that CR LF are received following data sent to the receiver this being in response to the commands of step 1 After confirming CR LF allow a short delay approx 1 msec before passing subsequent commands Go to step 1 7 5 Monitoring the contents of received serial data CMD D CR Data to be transmitted FORMAT All received data Go to VFO mode 4 AARSO5SO operating manual from Memory mode 1 Y CR Send signal level 64 div 00 3F 2 nn M CR Go to Memory mode after sending data of selected memory channel 3 nn 00 99 Data of the selected memory channel nn BLANK Data of the present memory channel 7 6 FORMAT 1 Contents of the received signal Contents of serial data gt D Rn Gn Bn Tn Fnnnnnnnn C CR LF Contents of each TX Details D HEADER D DIAL Rn ATT position n 0 OFF n 1 10dB n 2 20dB Gn AGC position n 0 Slow n 1 Fast Bn Filter position n 0 Normal n 1 Narrow Tn Tone position n 0 Low n 1 High Fnnnnnnnn Receive Frequency Present frequency LSD 10Hz Other than VHF band Onnnnnnn VHF band nnnnnnoo Cor Present mode C CW U or U USB Lor L LSB Aor A AM S or S S AM N or N F M x x 42 HARSOS0 operating manual 7 7 FORMAT 2 Reading the receiver s signal strength Contents of transmissio
20. AARSOS0 operating manual 1 Introduction amp accessories Thank you for purchasing the AOR AR3030 General Coverage Receiver The AR3030 uses the very latest DDS Direct Digital Synthesizer technology to ensure the highest levels of design performance and reliability A TCXO Temperature Compensated Crystal Oscillator is provided for high stability and the legendary Collins 6kHz AM filter for the ultimate in AM selectivity It is recommended that you carefully read this handbook and familiarise yourself with the receiver before placing it into operation Every effort has been made to make this manual correct and up to date Due to continuous development of the receiver and by error or omissions anomalies may be found and this is acknowledged Most apparent faults are usually due to accidental misoperation of the receiver carefully read all of the manual before deciding to return the receiver for repair Although carefully designed the receiver like all receivers suffers from a degree of internal noises known as spurii They are a product of the receiver s circuitry and do not represent a fault This manual is protected by copyright AOR Ltd 1993 No information contained in this manual may be copied or transferred by any means without the prior written consent of AOR Ltd AOR and the AOR logo are trade marks of AOR Ltd Collins is a trade name of Rockwell International The use o Collins and Collins inside has been authoris
21. The same comments apply as for LSB By convention Radio Amateurs also use USB above 10MHz An optional Collins 2 5kHz 8 resonator mechanical filter of high specification may be fitted in place of the standard 2 4kHz Murata ceramic filter for improved selectivity CW Continuous Wave Often referred to a Carrier Wave or Morse code Selection of CW changes the audio tailoring to best suite reception of dots and dashes A 500Hz Collins 7 resonator mechanical filter may be optionally fitted in the NARROW filter position and will greatly aid rejection of unwanted signals on this mode FAX Facsimile Selection of FAX optimises the receiver for reception of weather and news facsimile The 2 4kHz standard SSB filter is employed but audio tailoring is optimised for facsimile reception A constant level OdBm 600 OHM audio output is available through a rear panel 3 5mm FAX OUTPUT socket ready to feed an external facsimile decoder printer such as the AOR WX 2000 6 3 Changing VFO A B In the true sense of the word VFO stands for Variable Frequency Oscillator Of course as technology improved so modern receivers do not strictly use a VFO in the case of the AR3030 a Direct Digital Synthesizer DDS is employed However the term VFO has generally come to mean current tuning parameters and refers to the tunable frequency currently displayed along with mode and other settings such as attenuator filters etc In this sen
22. ake care to avoid spillage or leakage of liquids into the receiver and AC power supply Special care should be taken to avoid liquid entering via the power jack Always remove batteries if the receiver is not going to be used for a while Avoid static discharge from wire aerials earth to a central heating radiator or similar in order to discharge the wire before connection to the AR3030 Always disconnect and earth an aerial system if an electrical storm is expected Avoid connecting disconnecting the power connection or batteries with the set switched on Avoid a rapid switch On Off sequence If switched off leave at least ten seconds before switching on again Ensure the mains plug connections are tight and DC connections such as cigar lighters secure Avoid strong RF fields from near by transmitters If in doubt disconnect the AR3030 from the aerial and switch the set off 4 2 Looking after your receiver Always keep the receiver free from dust and water Use a soft dry cloth to gently wipe the set clean Never use chemicals such as benzine or thinners which will damage certain parts 4 3 Power requirements The AR3030 is designed for operation from an external DC supply of 11 16V DC at approximately 0 7A minimum or from internal fitted dry batteries Always use the mains power supply provided or from a regulated DC power supply of 13 8V 0 7A or more using the optional DC3000 connecting lead Always switch the receiver off when
23. annel Status of memory channel pass is indicated by PASS on the LCD This key is also used in the programming of MEMORY DELETE 5 11 AGC Automatic Gain Control key The AGC key is used to select the Automatic Gain Control setting on all modes except FM The status of AGC is indicated on the LCD by FAST and SLOW on the LCD It is not possible to switch the AGC off Generally speaking FAST is used for CW and some data communications reception and SLOW is used for USB amp LSB A slow setting in SSB modes can reduce the background noise during pauses in speech For AM and S AM reception the setting will depend on reception conditions for best setting 5 12 ATT attenuator key 4 AARSOS0 operating manual The attenuator facility can be useful for reducing the level of unwanted strong signals or overload The AR3030 has three settings of attenuator ATT these being OdB no indication on the LCD normal setting 10dB 10dB indicated and 20dB 20dB indicated The AR3030 does not contain RF amplification prior to the band pass filters all gain is applied in the more selective IF stages This ensures the highest immunity to intermodulation effects sometimes caused by a large number of strong signals encountered on the shortwave bands The ATT key is also used in the programming of PROGRAM MEMORY CHANNEL SCAN 5 13 M in Memory input key The M in key is used to ente
24. ce lays between the point of transmission and reflection in this area there will be little or no reception For this reason F layer propagation is often referred to a SKIP and the reflected signal as SKY WAVE Generally speaking only frequencies below 30MHz are reflected by the ionosphere Higher frequencies pass straight through even the F layers and will continue outward into space for ever Choice of frequency Depending upon the time of day and desired skip distance different frequencies will be selected by Radio Amateurs and commercial users such as Oceanic Air Traffic For instance the MUF Maximum Usable Frequency is often stated for a path between two locations Choosing a frequency above the MUF will not produce results as transmissions will pass straight into space Many propagation predictions and statistics are published and usually available from most country s National Amateur Radio and Shortwave Listeners representatives Various publications are produced giving transmission and contact details for World wide reception These titles include World Radio TV Handbook WRTH BPI Communications 1515 Broadway New York 10036 NY USA Passport To World Band Radio IBS North America Box 300 Penn s Park PA 18943 USA Listings for utility services are also widely published and available For a list of Shortwave and Amateur Band allocations refer to the table in section 6 12 of th
25. ckspace key Volume control BFO pitch control SQL Squelch control RF gain control Rotary tuning control S meter signal strength meter Loudspeaker internal Rear panel EX power external power connection AUX socket SP Speaker output socket FAX FAX audio output socket RS232C Computer control port GND Ground connection Wire ANT aerial connector ANT selection Selection switch WHIP ANT 50 OHM LW HF ANT socket o10101010101010101 TAAA AAAA AAAA AAA AQAA AQQ QI o AARAHA o N OVVVO NNYNNNNN 42a hahahahahaha OONAN akRWONM OOON OaIRWN COONDOARWON O ARICIO operating manual 5 36 VHF ANT VHF socket 22 5 37 LIGHT switch 22 5 38 BATT compartment 22 6 Basic manual operation on the receiver 23 6 1 Tuning the receiver using the rotary control 24 6 2 Changing receive mode 24 6 3 Changing VFO A B 26 6 4 Tone Audio tailoring 27 6 5 Bandwidth and filters 27 6 6 AGC Automatic Gain Control 28 6 7 ATT Attenuator operation 28 6 8 RF gain control 29 6 9 Squelch control 29 6 10 BFO pitch control 29 6 11 VFO and keypad lock 30 6 12 Entering a frequency via the keypad 31 6 13 Memory mode 32 6 14 Memory write 33 6 15 Deleting memory contents 34 6 16 Memory channel scan 36 6 17 Program memory channel scan 37 6 18 Pass channel operation 38 6 19 Pause time programming in scan mode 38 6 20 Delay
26. d 9 MHz bands If you have a small garden space an active aerial may be worth considering Discone For wide coverage in the VHF UHF bands a compromise has to be met and the most popular aerial is a discone AOR DA3000 Their appearance is like a large spider or umbrella without the covering material the better models have about 16 elements Typical usable coverage starts from about 25 MHz and extends continuously to 500 MHz 1300 MHz or even 2000 MHz The coverage peaks and dips throughout it s range as the elements interact to provide the widest possible 50 HARSOSO operating manual coverage Due to their necessary construction discone aerials are a little prone to wind noise due to vibration and possible damage in severe gales Earth systems The AR3030 power supply has no EARTH connection to the mains plug However a separate earth point is provided on the rear panel of the AR3030 for connection to a water pipe central heating radiator or external earth rod If fitting a separate external earth rod consider the implications carefully if your mains supply uses Protective Multiple Earth PME system If in doubt consult an experienced electrician Connecting an external earth wire may greatly reduce the local noise encountered when listening on the shortwave bands It is very important to provide a good earth should you use an aerial tuning unit A short length of thick gauge earth wire may be connected to a nearby cent
27. dard AM mode then switched to S AM A short whistle may be heard as the set locks onto the received station If a sustained whistle is encountered then you probably do not have the receiver quite centred on the station try tuning up and down by a couple of kHz and try again For best results you will have to experiment with the setting of AGC between fast and slow FM Narrow Band Frequency Modulation this provides high quality communication for relatively short distance operation FM uses a greater frequency bandwidth than other modes such as SSB so is less efficient Typically on shortwave FM is used by UK Citizen Band radio and 10m Amateur Band operation centred around 29 6 MHz FM is widely used on the VHF bands Marine band 2m Amateur Band 145MHz and PMR Private Mobile Radio but not commercial airband which still uses AM If the optional VHF converter fitted FM will be quite active in most areas In the absence of a signal the background white noise may appear quite loud For ease of listening the squelch control should be rotated clockwise until the background noise just disappears this should be carried out when no signal is present The point where the background noise is cancelled is known as threshold point Do not advance the squelch control more than necessary or the receiver will appear to be desensitised and weaker signals will be missed LSB Lower Side Band is a form or Single Side Band SSB LSB ten
28. de While in VFO mode pressing the ENT BS key activates keypad and rotary tuning lock A row of five underscores ___ indicates keypad VFO lock Press the key a second time to deactivate keypad lock 16 ARICIO operating manual The receiver will always deactivate keypad VFO lock when switched Off On 5 20 Volume control The volume control is located on the front panel underneath the mode switches It is used to to set the required audio output through the loudspeaker or headphone When turned fully clockwise the volume is at maximum when rotated fully anti clockwise the volume is reduced to minimum 5 21 BFO PITCH control This control is active only when the o indicator is displayed on the LCD The BFO Beat Frequency Oscillator allows manual reinsertion of carrier in CW USB LSB and FAX modes This forms a manual passband tuning mechanism useful to remove unwanted interference To activate while in VFO mode press 0 mtr The same sequence deactivates the BFO circuit In the default position BFO Off no o indicated carrier reinsertion is automatic making tuning easy and resolving SSB pleasurable 5 22 SQL squelch control The squelch control is a smaller rotary control located on the front panel underneath the volume control This control is used to eliminate unwanted background noise when monitoring a normally inactive frequency such as 5 680MHz international search amp rescue or when
29. ds not to be used commercially but is extensively used by Radio Amateurs on frequencies below 10 MHz This assists the separation of Commercial and Amateur users on traditionally shared bands and prevents them from speaking to each other SSB is a very efficient method of transmission as the unwanted second sideband and carrier have been removed This allows the full transmitter power to be employed in carrying useful information within the wanted sideband As a result greater distances are possible on SSB and a smaller frequency bandwidth is required than most other modes The AR3030 uses true carrier re insertion so that voice becomes intelligible However due to the complexities of SSB audio never sounds 100 natural and often listeners comment on it sounding a little like Donald Duck or Micky Mouse but this is normal and with practice you soon become used to this characteristic The setting of AGC is important for SSB reception Usually a SLOW setting provides the best results when background noise will usually be reduced Rotate the RF gain control anti clockwise so that the S meter needle just lifts with voice peaks this can reduce the background noise especially during 25 AERSO5SO operating manual pauses in speech Do remember that reducing the RF GAIN control which increases deflection of the S meter reduces the sensitivity of the receiver the normal position is fully clockwise USB Upper Side Band
30. eadphone is connected the internal speaker is automatically disconnected Rear panel 5 27 EX POWER external power connection 18 ARICIO operating manual B Model AR3030 Receiver Frequency Range 30 kHz to 29 99999 MHz p EXT Power 12 Volts Negative Grounded O Manufactured by AOR LTD E Serial No e ate O LIGHT SPARE SPARE EXTPOWER BATT UM 3x8 12V S S2 12 V GND WHIP ANT RS 232C GND WIRE A ut rw ot ee a z en ANT ma B GJ 8 0o00 pibell ARS020 receiver rear panel view Please refer to the detailed information Section item 19 AARSO5SO operating manual This is a special switching three pin socket designed to accept external DC input of a nominal 13 8V DC 0 7A negative ground You may either connect the power supply provided or another suitable supply such as a 12V car battery using the optional DC3000 DC lead and observing the correct polarity RED positive WHITE negative At no time must AC mains power be connected directly to this socket or serious damage may occur and a risk of personal injury When the power plug is removed from the EX POWER socket supply is automatically switched to internal batteries should they be fitted 5 28 AUX socket This 8 pin DIN socket provides various control facilities for connectio
31. ed by Rockwell Interna tional All other trade marks and names acknowledged E amp OE 1993 AOR Ltd Operating manual Conventions Where text appears in BOLD UPPERCASE the keys are to be pressed exactly as shown For example 4 9 mtr Means press the 4 key followed by the 9 key followed by the mtr key Words contained in speech marks PASS refer to indications displayed on the Liquid Crystal Display Where the mode of FM is referred to this indicates NFM Narrow FM For clarity the LCD diagrams for key sequences often have highlights above digits to signify they are flashing These highlights do not actually appear on the LCD 1 1 Accessories supplied Mains power supply Operating manual HARSO5SO operating manual 2 Table of contents 1 Introduction 1 1 Accessories supplied Table of contents Major features Precautions Location Looking after your receiver Power requirements Aerial antenna connection Kop Controls and functions Front panel On Off power switch Headphone socket Mode keys and indicators Liquid Crystal Display LCD FO key SCAN key MEMO key BW Bandwidth key TONE key PASS key AGC Automatic Gain Control key ATT Attenuator key M in Memory input key Numeric keypad 0 9 decimal and separator key MHz MHz key kHz kHz key mtr metre key ENT BS Enter and Ba
32. en an optional VHF converter has been fitted Frequency coverage is nominally 25 to 2000MHz CR400 tape record lead This lead comprises an 8 pin DIN plug on one end for connection to the AR3030 with a 3 5mm audio plug on the other for connection to a tape recorder with a 2 5mm plug for control On Off of the tape motor WX2000 weather facsimile decoder printer Purpose designed and built to decode and print high quality facsimile pictures For use on both shortwave and UHF Meteorsat with a suitable receiver 9 Trouble shooting Microprocessor reset Should you experience problems with the receiver apparently doing something unexpected simply switch Off the receiver using the main power switch and leave it for about 10 seconds Switch the receiver back on again and check if the problem has been cleared If this does not appear to solve the problem disconnect all connections and peripherals such as tape recorders weather facsimile printers aerials and the power supply Switch the receiver off and leave for one minute Reconnect the power supply and test again Should the receiver still refuse to operate correctly turn the set up side down 46 AARSOS0 operating manual and locate a small hole in the bottom cabinet close to the main rotary tuning control This hole provides access to the microprocessor reset switch With the AR3030 connected to it s power supply and switched On momentarily press this switch and release usi
33. en changing frequency An ATU of this nature is passive this means that no power is required to operate the ATU and no extra circuit 4G AARSO5SO operating manual noise is introduced into the receiver Dipole centre L piece connection m close up view L 75 frequency in MHz Length in metres Aerial wire Dipole ry Ka tantei ec w i Centi ducto ntre conductor foan ecrnected Braid gathered to aerial wire and connect to aerial wire coextal cable Coaxial cable leading to the Dipole aerial receiver 60 OHM Loop Aeriats Desk top loop aerials have the advantage of small size such as the AOR LA320 They too have tuning controls to reject unwanted signals As the loop is within easy reach of the operator it can be rotated to provide directivity They can be particularly useful for DX ing the lower bands Generally speaking they offer excellent portability but cannot compare on the higher bands with a well sighted long wire aerial Active aerials Active aerials are normally quite compact AOR WA7000 and combine a wide coverage aerial with a preamplifier mounted within the aerial its self They require power to enable them to operate Not all designs allow you to switch the preamplifier off although some have a gain control As with loop aerials they tend to provide good results on the lower bands when compared to poorly sighted shortish wire aerials Overload can be a problem on the busy 7 an
34. es always select a quality brand 8 x AA size 1 2 or 1 5V cells are required 4 4 Aerial antenna connection The low impedance aerial input is of a high quality BNC type as preferred by commercial users rather than the cheaper SO239 type Adaptors are readily available to convert from a BNC to almost any other plug or socket as required allowing straight forward connection to almost any shortwave aerial The second input is a jaw designed for a high impedance long wire An earth connection is also provided on the rear panel A rear panel three position slide switch selects the 50 OHM BNC connector or high impedance wire input The third position applies a preamplifier and impedance matching network to the BNC aerial socket which may be used in conjunction with a telescopic whip aerial to enable a level of operation away from a long wire aerial or more elaborate system The AR3030 does not contain RF amplification prior to the band pass filters all gain is applied in the more selective IF stages This ensures the highest immunity to intermodulation effects often caused by the high number of strong signals encountered on the shortwave bands An aerial attenuator system allows selection of Odb 10dB or 20dB from the front panel RF gain is also available via a front panel rotary control this is especially useful in providing optimum audio quality for SSB operation AGC attack decay may also be selected from the front panel either fast
35. gits on the right hand side would be deleted and so on MEMO abort frequency input Should you decide to abort the frequency input during programming press the MEMO key once to abort The display will return to the frequency prior to input and the sequence aborted 6 13 Memory mode MEMO M in PASS ENT BS There are 100 memory channels 00 to 99 which can store frequency mode AGC attenuator bandwidth AF filter tone BFO status and lockout status The memories can be used to store shortwave or VHF frequencies if the VHF converter option has been fitted Program scan allows only a selected block of channels to be scanned while lockout causes certain channels to be skipped Pause and delay scan add to flexibility Data may be easily entered into memory or from memory to VFO for tuning There is a massive EEPROM store for all memory channels and VFO data so that no memory backup battery is required The memories may be over written time and time again Note Memory channels 1 to 9 must be entered using a zero prefix i e memory channel 2 is 02 and channel 3 is 03 etc Memory select MEMO key In VFO mode the LCD display will not show any legend relating to the memory operations such as memory channel number SCAN and PASS To select memory mode press the MEMO key The legend MEMO will appear on the LCD to confirm selection 52 HARSOS0 operating manual Presuming data has been stored in
36. h Now press the to inform the receiver that you are conducting a multiple memory channel de te far phan delefing g p spale channel OCL LA Lis Eis 55 AARSO5SO operating manual Enter the higher twd dil if methory chafnel furhber which you wish to erase i e 4 5 The legena will be replaced by memory channel limits 30 and 45 which will ftash alternatively Ww w 46 Complete the delete i confirms correct data e Ae the completion of the delete sequence i receiver will automatically to VFO mode The memory channels 30 to 45 inclusive will have been deleted To abort memory delete press the M in key Deleting the contents of all memory channels simultaneously This is accomplished as shown above in the example of deleting a block of memory channels In this instance the lower limit for delete is the first memory channel and the higher limit is the highest memory channel all of them In VFO mode press M in PASS 0 0 9 9 ENT BS The display will return to VFO mode automatically after approximately six seconds 6 16 Memory Channel Scan It is sometimes useful to instruct the AR3030 to automatically monitor a number of memory channels especially when activity is low This process is known as scanning It is possible to scan any mixture of bands simultaneously LW MW HF and VHF at the same time VHF reception provided an optional VHFconvertor is fitted
37. hest immunity to intermodulation effects sometimes caused by a large number of strong signals on the shortwave bands 6 8 RF GAIN control 25 HARSOS0 operating manual The usual position for this control is fully clockwise The setting of RF GAIN is particularly important for SSB reception to prevent an unpleasant rise in background noise especially during pauses in speech When listening to SSB transmissions rotate the RF gain control anti clockwise so that the S meter needle just lifts with speech peaks This will greatly reduce background noise levels Do remember that reducing the RF GAIN control which increases deflection of the S meter reduces the sensitivity of the receiver the normal position is fully clockwise 6 9 SQUELCH control In the absence of a signal background white noise may appear quite loud especially in FM mode For ease of listening the AR3030 is fitted with an all mode squelch circuit The squelch control should be rotated clockwise until the background noise just disappears and be carried out when no signal is present The point where the background noise is cancelled is known as threshold point Do not advance the squelch control more than necessary or the receiver will appear desensitised and weaker signals will be missed It is important for the squelch control to close when using an optional VHF converter as it s status is used by the microprocessor to determine when a freque
38. ical filter 526 8634 010 may be optionally fitted workshop fitting in the Narrow position FM 15kHz Murata ceramic filter CFU455E2 fixed Selection of Normal Narrow is disabled The AR3030 is fitted with several standard F bandwidths Selecting a narrow filter setting can improve intelligibility under some circumstances when listening to AM and S AM The fitting of a narrow 500Hz CW filter greatly improves the rejection of unwanted adjacent signals Indication of current setting is provide on the LCD as NOR or NRW 6 6 AGC Automatic Gain Control This key is used to select the Automatic Gain Control setting on all modes except FM The status of AGC is indicated on the LCD as FAST or SLOW It is not possible to switch the AGC off Generally speaking FAST is used for CW and some data communications reception and SLOW is used for USB amp LSB A slow setting on SSB can reduce the background noise during pauses in speech For AM and S AM reception the setting will depend on receiving conditions 6 7 ATT Attenuator operation The attenuator can be useful for reducing the level of unwanted strong signals or overload The AR3030 has three settings for ATT these being OdB no indication on the LCD normal setting 10dB 10dB indicated and 20dB 20dB indicated The AR3030 does not contain RF amplification prior to the band pass filters all gain is applied in the more selective I F stages This ensures the hig
39. ich will be selected in the narrow position CW 2 4kHz Murata ceramic filter in the Normal position An optional 500Hz 3dB Collins seven resonator mechanical filter 526 8634 010 may be optionally fitted workshop fitting in the Narrow position FM 15kHz Murata ceramic filter CFU455E2 fixed Selection of Normal Narrow is disabled Attenuator whip amplifier and aerial input amp AGC The AR3030 does not contain RF amplification prior to the band pass filters all gain is applied in the more selective IF stages This ensures the highest immunity to intermodulation effects often caused by the high number of strong signals encountered on the shortwave bands There are two aerial inputs The first is of the standard BNC type allowing straight forward connection to almost any low impedance shortwave dipole or multiband aerial system The second is a jaw designed for a high impedance long wire An earth connection is also provided on the rear panel A rear panel three position slide switch selects the 50 OHM BNC connector or high impedance wire input The third position applies a preamplifier and impedance matching network to the BNC aerial socket which may be used in conjunction with a telescopic whip aerial to enable a fair level of operation away from a long wire aerial or more elaborate system An aerial attenuator system allows selection of Odb 10dB or 20dB from the front panel RF gain is also available via a front panel rotar
40. in Autumn and Spring SPORADIC E propagation consisting of dense pockets of E layer ionosphere reflect even the higher VHF and UHF transmissions causing patterning on television sets This is to the delight of Radio Amateurs who are then able to communicate for many hundreds and even thousands of kilometres on frequency bands usually capable of only local reception Occasionally a similar effect can be caused by temperature inversion layers creating tropospheric propagation selectively ducting transmissions between two points Tropospheric propagation is usually applicable to the A Transmitting station B First receiving station C Second receiving station Simple illustration of the tonispheric reflection of shortwave radio signals 52 HARSOS0 operating manual higher VHF and UHF bands F1 amp F2 layers During the day time there are two upper layers of the ionosphere these being the F1 layer at about 200 kilometres and the F2 layer at about 400 kilometres As evening falls these layers combine to form a single F layer It is F layer propagation that is largely responsible for shortwave propagation over great distances The density of the ionosphere layers varies depending upon season time of day and sunspot activity which is believed to follow an eleven year cycle of good and bad propagation conditions You will note that large areas of the Earth s surfa
41. inoperative 6 5 Bandwidth and filters BS Bandwathand filtera ee AR3030 is fitted with several standard bandwidths including a cascade 8kHz 6dB ceramic filter CFU455G2 for AM MODE NORMAL NARROW SSB FAX CW plus two audio bandwidths AM 6kHz 2 4kHz AM S AM 6kHz 3dB in the normal position using the S AM 6kHz 2 4kHz legendary Collins eight resonator mechanical filter 526 8636 010 anda 9 kHz 2 AkHz 2 4kHz 6dB Murata ceramic filter USB LSB CFJ455K6 in the narrow position FAX Should the narrow CW optional PCB 2 5kHz 2 5kHz position not be used it is possible to fit an additional wider filter for AM such as cw 2 4kHz 500Hz Collins 8 5kHz 3dB 526 8561 020 Due to the I F cascade filter the widest possible filter is 8 5kHz FM Hoses 15kHz USB LSB FAX Denotes Collins mechanical filter 2 4kHz Murata ceramic filter CFJ455K6 optional Collins mechanical filter 27 AARSO5SO operating manual An optional 2 5kHz 3dB Collins eight resonator mechanical filter 526 8635 010 of higher specification may be optionally fitted workshop fitting to replace the 2 4kHz filter Should the narrow CW optional PCB position not be used it is possible to fit the optional Collins 2 5kHz filter as an addition which will be selected in the narrow position CW 2 4kHz Murata ceramic filter in the Normal position An optional 500Hz 3dB Collins seven resonator mechan
42. is achieved by removing and carefully storing the two knurled nuts Inside the battery compartment is a cradle designed to accept 8 x UM 3 AA size batteries The receiver has not been designed to operate for a long time from batteries However depending upon the type of battery used operation is typically 30 minutes using Manganese and 45 minutes when using Alkaline cells Always remove the batteries when they have expired run down Should you plan not to use the receiver for a period of time remove the batteries to avoid potential leakage Note The memory channel data is held by an internal EEPROM which does not require batteries or connection to external supply 22 HAARSOS0 operating manual 6 Basic manual operation of the receiver Connect and select an appropriate aerial antenna to the input on the rear of the receiver The selection of aerial depends upon your location and specific requirements but may include a dipole or long wire There is further aerial information in this manual section 10 If in doubt please consult your dealer Connect the AR3030 to an appropriate DC power source using either the supplied AC adaptor or optional DC3000 DC lead Never connect the receiver directly to the mains Before turning on the power switch set the volume to the 10 o clock position and squelch control to the 8 o clock position fully anti clockwise Press the power switch until it latches in depressed which is the
43. is manual 12 Specification 53 AARSO5SO operating manual Model Receiver coverage Tuning selection Receiving modes Frequency stability Number of memory channels Receiver sensitivity Selectivity Image spurious rejection Dynamic range Aerial connection Audio output Power requirement Size Weight AR3030 30 kHz 30MHz MHz kHz 100Hz 10Hz 5Hz minimum step AM S AM USB LSB CW FAX amp NFM 5 ppm 10 to 50 degrees C 100 total 00 99 SSB FAX CW 10dB S N N 1uV 30 50 kHz 5uV 540 1800 kHz 0 5uV 1 8 30 MHz AM 10dB S N N 3uV 30 50 kHz 15uV 540 1800 kHz 1 5uV 1 8 30 MHz Narrow FM 12dB SINAD 0 5uV 1 8 30 MHz SSB FAX 2 4 kHz 6dB AM 6 0 kHz 3dB AM narrow 2 4 kHz 6dB CW 500 Hz 3dB with optional filter FM 15 kHz 6dB 70dB 100dB 25kHz spacing with 500Hz CW filter fitted LW HF 50 OHMS nominal BNC LW HF 450 OHMS for wire terminals LW HF High impedance whip on BNC slide switch selection VHF 50 OHM nominal BNC for optional VHF adaptor installation 1 8 WATTS 8 OHM load 10 distortion Internal dry batteries 8 x AA or external 12V DC 0 8A nominal 13 8V negative ground 250mm W x 88mm H x 240mm D Approx excluding projections 2 2kgs without batteries fitted Specifications subject to change without notice due to continuous development of the receiver E amp OE oF Manual V1 01
44. lected memory channel Removal of memory contents from all memory channels nn BLANK Selection of PASS status in memory mode PASS OFF PASS O N Quit the remote control mode of RS232C The above functions can be set up simultaneously by either one or more commands Frequency entry and mode selection must come at the end of whole command However removal of memory contents or memory channel pass entry can only be carried out individually The last command must be followed by either CR or CR LF 8 Optional accessories VHF converters Two separate optional VHF internal converters are planned for the AR3030 but qq AARSOS0 operating manual only one may be fitted at a time It s fitting is recommended in a workshop The frequency limits of the VHF converters are 108 00000 MHz to 139 99999 MHz 140 00000 MHz to 169 99999 MHz or Optional SSB filter USB LSB FAX modes use a 2 4kHz Murata ceramic filter An optional Collins 2 5kHz eight resonator mechanical filter 526 8635 010 of higher specification may be fitted into the normal position replacing the 2 4kHz filter workshop fitting Optional CW filter CW mode uses the 2 4kHz Murata ceramic filter in the Normal position An additional optional 500Hz Collins seven resonator mechanical filter 526 8634 010 may be optionally fitted workshop fitting in the narrow position Optional VHF AM amp FM converters and filters DAZOOO
45. led the ionosphere When the reflected signals reach the Earth again they may either be received or reflected back up into space If lucky they will be reflected by the ionosphere yet again down toward the Earth providing reception into another 54 AARSO5SO operating manual and possibly more distant location The ionosphere is constructed of many layers of ionised gas Of particular interest to shortwave listeners are the lower E and upper F1 amp F2 layers although a lower D layer exists during day time D layer During day time the lower D layer forms around 60 to 80 kilometres above the Earth s surface This D layer tends to absorb low frequencies reducing the distance covered by medium wave transmissions In the night time when the D layer dissipates medium and low frequency transmissions may propagate over much greater distances If the transmitted frequency is too high for to be reflected by the ionosphere or the angle too steep transmissions will simply pass straight though the ionosphere without being reflected and will travel upward to the next ionosphere layer E layer Above the D layer is the E layer located at a height of about 100 kilometres The E layer tends not to absorb signals as much as the D layer but refracts some signal back to Earth where it may be received some distance from the original point of transmission Usually
46. matically cancels output from both the internal and external loudspeaker if used A low level audio output suitable for tape recording is available through via the AUX socket located on the rear panel Switching to control a tape motor is also available via the AUX socket A second constant level slightly higher output is available via a second rear panel 3 5mm socket suitable for connection to a facsimile decoder AGC and IF outputs are also available via an 8 pin DIN socket located on the rear panel Versatility amp power connection The AR3030 can meet a number of requirements to satisfy Broadcast Amateur band Airband or Marine enthusiasts Professional off air monitoring and of course casual listening too The World s shortwave and Amateur bands can be monitored even the longer range Oceanic Airband and ship to shore The receiver is designed to operate from either an external DC supply such as that provided of a nominal 13 8V DC or from internally fitted batteries 8 x AA dry cells which may not have been provided Although rechargeable batteries may be used with the receiver they must be externally recharged The receiver must never be connected directly to the mains supply 4 Precautions AARSO5SO operating manual 4 1 Location Do not use or leave the receiver in direct sunlight It is best to avoid locations where excessive heat humidity dust and vibration are expected Always treat the receiver with care T
47. memory SCAN is required The squelch is not usually used when listening to shortwave transmissions due to the relatively high background noise levels The usual setting for the control is fully anti clockwise The squelch setting is by the receiver s microprocessor to decide when to stop during memory scan The squelch opening closing also controls the tape recorder switching circuitry so a small internal click may be heard when the squelch activates The squelch control requires careful setting to achieve optimum operating performance Rotate the control clockwise until the background noise just disappears threshold this is the most sensitive setting of VOL BFOPTCH 5 20 VOLUME control the control In practice the control O is usually rotated a little further 5 21 BFO PITCH control clockwise beyond the threshold SQL 5 22 SQUELCH control RF GAIN point to prevent the receiver from stopping on noise or very weak and 5 23 RF GAIN control unreadable signals 17 AARSO5SO operating manual If the control is rotated too far clockwise then weaker signals will be totally lost and only local strong signals will be heard 5 23 RF GAIN control This small rotary tuning control is located on the front panel underneath the BFO PITCH control The RF GAIN control reduces the level of amplification applied to the receiver s I F circuits This has the effect of reducing the sen
48. memory mode press 0 1 to select memory channel 1 0 2 for memory channel 2 etc Alternatively you may rotate the main rotary tuning control to select memory channel If no data has been stored then empty channels will be skipped when turning the main rotary tuning control or when selected via the keypad While the legend MEMO is displayed along with a channel number the AR3030 will be actually receive the displayed frequency Return to VFO To return to VFO mode simply press the VFO key Transfer memory to VFO To transfer the current memory data to VFO press MEMO while the MEMO legend is displayed on the LCD 6 14 Memory write M in key While tuning in VFO mode you may wish to store an interesting or regularly used frequency into memory so that it may be called upon quickly and conveniently To store the current VFO data into memory which includes frequency mode AGC ATT TONE BW BFO status tuning step the M in and ENT BS keys are used Automatic Press the M in key and the AR3030 will automatically select the first lowest number empty memory channel unless they are all in use in which case channel 00 is always selected The memory channel number will appear on the lower left hand side of the LCD and will flash to indicate memory write mode Press the ENT BS key to complete the sequence As the AR3030 automatically increments to the next available memory channel it is
49. n nn CR LF Contents of TX n Details Send the S Meter Readings in 64 steps 00 3F 00 MIN 01 02 3E 3F MAX 7 8 FORMAT 3 Transmitting the memory contents Contents of transmission Note Mnn Pn Rn Gn Bn Tn Fnnnnnnnn C CR LF Mnn represents HEADER and Memory channel number Pn indicates Memory channel Pass position n 0 PASS OFF 1 PASS ON Details of each TX is same as FORMAT 1 When the selected channel is blank M CR LF CHANNEL 7 9 Change the receiving modes or Make new entries CMD nn W CR W CR 0 R CR 1 R CR 2 R CR 0 G CR 1 G CR 0 B CR 1 B CR O T CR 1 T CR Function Write the present contents into a selected channel and go to the memory mode Search for a blank channel and write the present memory contents If no blank channel is found go to the dial mode followed by M Selection of ATT OFF 10 dB 20 dB Selection of AGC SLOW FAST Selection of FILTER NORMAL NARROW Selection of TONE LOW HIGH 43 AARSO5SO operating manual nnn nnnn CR nn CR CR 0 P CR 1 P CR Q CR Remarks Enter the frequency MHz and go to the dial VFO mode Frequency entry for MHz band must be correct within the range of receiver Over flow digits will be ignored from higher to lower in order Selection of mode CW USB LSB AM S AM FM FAX Removal of memory contents from the se
50. n to external peripherals such as tape recorders The pin connections are as follows 1 AGC output approximate level 0 to 3V Do not ground 2 Ground 3 External RF gain 0 to 1 5V This connection may be used as transmit mute by applying 1 5V to this point during transmit 5 28 AUX socket 2 5 Should you wish to monitor your own transmit audio reduce the voltage toward OV to find an acceptable level 4 I F output Frequency 455kHz level between 1 30 to 20 dBm 50 OHM 5 Record audio output level 20dBm 77mV 600 OHM 6 Tape switch relay controlled Normally open with squelch closed 7 Tape switch relay controlled Normally open with squelch closed 8 Ground 5 29 SP Speaker output socket This 3 5mm mono jack socket provides audio output to drive an external speaker unit Connection to this socket automatically disables the internal speaker but not a headphone if connected to the front panel socket 20 HAARSOS0 operating manual An external speaker should have a nominal 8 OHM impedance and power handling of 2 WATTS or greater 5 30 FAX FAX audio output socket This 3 5mm mono jack socket is designed to provide a suitable audio characteristic and constant level output to feed data facsimile decoders Output is 600 OHM OdBm constant 5 31 RS232C Computer control port The 9 pin female D type RS232C control socket and associated internal circuitry is fitted as standard This permits the
51. ncy is clear and when it is busy The usual position for the squelch control is fully anti clockwise 6 10 BFO PITCH control Due to the complexities of SSB audio never sounds 100 natural and often listeners comment on it sounding a little like Donald Duck or Micky Mouse this is normal and with practice you soon become used to this characteristic The AR3030 uses automatic carrier re insertion to make tuning of SSB FAX CW as easy as possible However should you wish to change the beat note on CW reception or alter the tonal characteristics of SSB FAX it is possible to engage a manual BFO BFO stands for Beat Frequency Oscillator and takes the place of automatic carrier re insertion One benefit of the manual BFO setting is to form a simple manual type of passband tuning to reduce the potential interfering effects of adjacent strong signals The normal position for the BFO PITCH control is 12 o clock To activate the BFO in VFO mode press the 0 key followed by mtr The LCD will display a o to indicate that manual BFO mode has been selected If 2g AARSO5SO operating manual the BFO PITCH control is rotated it will initially sound like a fine tuning control To practice using the BFO find an SSB transmission suffering from adjacent channel interference and tune away by a few kHz using the main rotary tuning control Ensure the BFO PITCH control is selected and rotate the BFO PITCH control fr
52. ng preferably a non conductive thin probe such as a cocktail stick or cotton bud This action will reset the microprocessor Should the receiver fail to power up check the power supply and mains fuse The AR3030 does contain an internal DC power fuse but should it blow we suggest you contact your dealer for advise and service there must be a reason for the fuse to blow If the above does not help please contact your dealer for assistance We acknowledge that many listeners like to have service information available if purely for interest For this reason a service manual should be available through dealers as an option 10 Aerials Antennas and earth systems The subject of aerial choice and earth can be quite complex There are many advantages and disadvantages to consider before connecting an external aerial to your receiver Theory and practice One interesting phenomena is that aerial theory and practice can be surprisingly different Keeping common sense in mind it is one of the few remaining areas for listeners to easily experiment and often achieve fantastic results Mounting location It is important to mount any aerial as high as possible and in clear space although this is more important at VHF frequencies than for shortwave If possible the aerial should have a clear path to the horizon Results are usually disappointing when an installation is in a loft space Telescopic whip aerials Whip aerials may be connected t
53. o the 50 OHM BNC aerial input of the AR3030 and the whip aerial switch position selected The selection of WHIP adds a small preamplification to the receiver s input stages and matches the very high impedance of the whip to the receiver s circuitry Although whip aerials allow you to start listening without delay they should only be considered as a temporary aerial or for portability Of course a whip aerial may be connected directly to the VHF BNC 50 OHM 47 AARSO5O operating manual aerial input should the VHF converter option be fitted Long wire aerials For shortwave reception a random length of long wire approximately 10 to 20 metres in length forms a good compromise The wire should be fed into the high impedance aerial input of the AR3030 receiver If possible try to locate the receiver close to a window so that the wire has the shortest and most direct run from the rear of the receiver to the outside World Never attach the wire aerial directly to a support or wall Instead attach a small length one metre of insulating material such as nylon to each support house or tree for example and then onto the aerial wire Allow the wire aerial to drop diagonally into the window and receiver rather than straight down the wall Keeping the aerial away from supports and building will reduce the loss of signal from the wire aerial and prevent unwanted noise from entering the aerial system g g
54. om side to side until the signal becomes readable again You should experience a reduction or elimination in adjacent channel interference in many cases To return to automatic carrier re insertion repeat the key strokes 0 mtr while in VFO mode Carrier A l To the left an AM gs i signal showing F I Lower side band Ss LOB USB Carrier and i Upper side band lI Freguency gt Target Target A BFO signal A B signal Unwanted signal Unwanted signal Amplitude Receiver q pasaband Amplitude Receiver passband gt gt Frequency Frequency Above left SSB true carrier re ineertion showing an unwanted signal in the passband Above right the receiver has been tuned downward to remove the interfering signal from the passband and the BFO adjusted to recover audio 6 11 VFO and keypad lock At times you may wish to lock the receiver onto a specific frequency or prevent accidental changing of data through the keypad For this reason a dial lock facility has been provided To activate dial lock while in VFO mode simply press the ENT BS key A row of underscores will appear underneath all the LCD frequency display segments to confirm dial lock is on To deactivate dial lock simply press ENT BS again The row of underscore characters will be removed from the LCD Regardless of the dial lock selection if switched Off On the AR3030 will always
55. or slow but cannot be switched off Aerial Tuning Units ATU AARSO5SO operating manual An ATU can improve the selectivity of any shortwave receiver when connected to long wire aerial other than a short wire of a few metres This valuable extra selectivity is created provided by the ATU rejecting out of band signals enabling the receiver to single out one band of frequencies while rejecting potentially strong unwanted transmissions An ATU is usually constructed in a small box with about two or three controls on the front panel One disadvantage however is the need to constantly retune the ATU when changing frequency An ATU of this type has no active circuitry so is known as a passive device Active desk top loop aerials Usually designed for the shortwave bands such as the AOR LA320 Loop aerials have the advantage of small size when compared to long wire aerials and being within easy reach of the operator it can be rotated to provide directivity The circuitry offers a small level of gain with the advantage of selectivity similar to an ATU For further information please refer to section 10 of this manual regarding aerial and earth systems 5 Controls and functions The AR3030 receiver is housed in a strong metal cabinet Controls for operation are located on the top and front of the cabinet with connections to the rear Front panel 5 1 On Off power switch This square shaped black plastic button switches the set O
56. ould the narrow CW optional PCB position not be used it is possible to fit an additional wider filter for AM USB LSB FAX 2 4kHz Murata ceramic filter An optional 2 5kHz 3dB Collins eight resonator mechanical filter of higher specification may be optionally fitted to replace the 2 4kHz filter Should the narrow CW optional PCB position not be used it is possible to fit the optional Collins 2 5kHz filter as an addition which will be selected in the narrow position CW 2 4kHz Murata ceramic filter in the Normal position An optional 500Hz 3dB 15 AERSO5SO operating manual Collins seven resonator mechanical filter may be optionally fitted in the Narrow position FM 15kHz Murata ceramic filter fixed Selection of Normal Narrow is disabled 5 9 TONE key Audio quality may be tailored to suite the type of listening When a transmis sion is noisy or suffering from interference it may be useful to change the audio tailoring to improve readability by making reception more or less toppy ais of TONE setting is displayed by HIGH and LOW indications on the LCD USB LSB AM S AM FM HIGH position cut off frequency 3000 Hz LOW position cut off frequency 1800 Hz CW TONE key inoperative Frequency set to 800 Hz FAX TONE key inoperative 5 10 PASS key The PASS key is used in MEMORY mode to lockout PASS unwanted channels during memory scan Pressing the PASS key a second time will reinstate a locked out ch
57. power up with dial lock off 50 AARSOS0 operating manual 6 12 Entering a frequency via the keypad Where exact frequencies are known you may wish to enter a frequency directly through the keypad The numeric keypad is located on the front panel underneath and to the right of the LCD The keypad is laid out in a logical manner and is split into numeric and command areas The numeric keys are used for entering a frequency with the decimal key acting as a separator It is possible to enter frequencies as MHz kHz or by metre band Entry as MHz For example to select 14 10000 MHz follow the key sequence 1 4 1 MHz MHz frequency entry You will note that the trailing zeros are not required as the AR3030 completes the entry at the time the MHz key is pressed Entry as kHz For example to select 4722 kHz 4 722 MHz follow the key sequence 4 7 2 2 kHz kHz frequency entr y METRE BAND MIN kHz MAX kHz MODE STEP Entry as mtr 460 1907 5 19125 CW 10Hz 120 2300 0 2495 0 AM 1kHz Should you wish to start listening to a 90 3200 0 3400 0 AM 1kHz Broadcast or Amateur band but not a 80 3500 0 3575 0 LSB 10Hz specific frequency the mtr key 75 3900 0 4000 0 AM 1kHz provides immediate access with minimal 60 4750 0 5060 0 AM 1kHz key presses The information will 49 5950 0 6200 0 AM 1kHz update a
58. r frequencies from the currently selected VFO into memory When M in is pressed a flashing two digit memory channel number indicates memory input selection in progress To abort memory input without executing simply press M in a second time or press MEMO or SCAN The M in key is also used in the programming of MEMORY DELETE 5 14 Numeric keypad 0 to 9 keys The numeric keypad is located on the front panel underneath and to the right of 14 N ck A the Liquid Crystal Display LCD The a Shale i IA keypad is laid out in a logical manner and decimal key is split into numeric and command areas 5 16 MHz key 5 17 kHz key 5 18 mtr key 5 19 ENT BS key The numeric keys are used for entering a frequency memory channel memory lockout memory delete and other functions 1 2 3 Mbz ENTBS 5 15 decimal and separator key 4 5 6 khz mtr Press the key once to act as a decimal point separator when entering 7 8 9 0 e frequency in MHz i e while in VFO mode 1 4 1 MHz MHz frequency entry This key is also used as a separator when programming memory scan limits and memory delete limits 5 16 MHz MHz key 13 AARSO5SO operating manual The MHz key is used to complete frequency entry when MHz selection is required i e while in VFO mode 4 7 2 2 MHz While in VFO mode this key alters
59. ral heating radiator or water pipe but never use a gas pipe for earthing Ideally a separate earth rod should be used but the length between the receiver and rod becomes restrictive if too long the earth system may well pick up noise rather than remove it If a long run of earth wire is necessary it may be worth considering a screened earth system This simply comprises a coaxial cable such as URM43 URM76 for short runs or URM67 or RG213 for longer runs shorted inner to outer at the earth rod end with only the centre core connected to the AR3030 earth point the outer braid being cut back and insulated This provides a screen for potential incoming interference and passes any noise down the cable away from the receiver and toward the earth rod 11 Propagation shortwave bands Unlike VHF and UHF transmissions which generally propagate only ona localised basis to the horizon plus a small amount shortwave transmissions may travel for many thousands of kilometres Depending upon the frequency in use time of day season of the year and sun spot activity transmissions may propagate completely around the World Radio signals are electromagnetic waves very similar to light beams As such they do not readily follow the curvature of the Earth but attempt to travel out into space The ionosphere Luckily the frequency spectrum of shortwave is often reflected back down to Earth by the upper layer of the Earth s atmosphere cal
60. receiver to be connected directly to a computer for hands off remote control Please refer to the COMPUTER CONTROL section 7 for a full list of facilities protocols and connection details 5 32 GND Ground connection This jaw is designed to accept an external earth connection such as a separate earth rod or connection to a central heating radiator etc To operate lift up the plastic tag place the conductor into the connection hole and press firmly closed using a downward motion Connection to a good external RF earth will enhance the receiver s performance and reduce interfering electrical noise Should your building use PME Protective Multiple Earthing ensure the electrical wiring is well bonded If in doubt consult a qualified electrician 5 33 WIRE ANT Wire aerial connector This aerial input jaw is designed to accept the conductor of a random length wire aerial To operate lift up the plastic tag place the conductor into the 5 32 GND ground connection connection hole and press firmly 5 35 WIRE antenna aerial j i 5 54 ANT Selection closed usmg a downward motion 5 55 WHIF 50 OHM LW HF ANT selection switch The input impedance is a nominal o 450 OHMS The aerial input is E selected by the ANT SELECTION i d VHE NT switch which should be placed into the left hand WIRE ANT position 5 34 ANT SELECTION Selection switch
61. ress VFO to select tuning manual tuning 5 6 SCAN key The SCAN key is used to start the memory scan facility which will cause the receiver to check the occupied channels of it s memory content for activity busy channels SCAN can only be selected if the AR3030 is in VFO mode It is possible to select all memory channels to be scanned or just a specified range of memory channels H It is also possible to lock out unwanted channels so VFO BW AGC they will be skipped during memory scan Som TONE ATT The SCAN key is also used in programming of SCAN i ef A 5 5 VFO key 5 7 MEMO key 5 6 SCAN key eens 5 7 MEMO key The MEMO key the receiver into MEMORY mode so that 5 2 BW ke a previously stored frequency can be monitored g y Pressing MEMO twice first calls up the current 5 9 TONE key memory channel then writes the contents to the 5 10 FASS key currently selected VFO so it may be tuned 5 11 AGC key The MEMO key is also used in the programming of 5 12 ATT key SCAN DELAY 5 15 M in key 5 8 BW BandWidth key The BW key allows selection of filter bandwidth as indicated by the NOR normal and NRW narrow indicators on the LCD The AR3030 is fitted with several standard IF bandwidths AM S AM 6kHz 3cB in the normal position using the legendary Collins eight resonator mechanical filter and a 2 4kHz 6dB Murata ceramic filter in the narrow position Sh
62. rogramme scan data The LCD will show SCAn CH to confirm program scan data input mode has been selected The current bottom and top scan limits will then flash in sequence Cr uU CUu LIULL Lil W Ww q4 Enter the lo lt a wo igit memory channel number in this ones J 5 LLI Now press t dij Wey tdirform the rebeivdr that you are about to enter the higher memory qhgnne n nfo ETR memory scan The channel legend 05 ipe T placed by wh Tt the key has been pressed Li 57 AARSO5SO operating manual r _ T u Enter the h ghel tuo dail thethory channb humber for programme memory scan in this amp x amp mple 1 2 The legend will be replaced by memory channel limjts 05 and 12 which will flash alternately y th i irms and the AR3030 will commence programme memory scan between the sp cified limits To stop programme memory scan press SCAN 6 18 Pass channel operation While scanning there will be occasions when you will want to skip over one memory channel or a number of channels Under these circumstances program memory scan may not be ideal as the channels you wish to skip may not be consecutive This is where memory channel PASS is used Where the PASS facility is used to cause memory scan to skip the specified channel the memory channel is referred to as being LOCKED OUT For example if you wish to lock out memory channel 8 pre
63. s you recall mtr band and tune 4 7100 0 7300 0 AM 1kHz the receiver 40 7000 0 7100 0 LSB 10Hz 31 9500 0 9900 0 AM 1kHz At default the following mtr key defaults 30 40100 0 10150 0 USB 10Hz apply 25 11650 0 12050 0 AM 1kHz 21 13600 0 13800 0 AM 1kHz Attenuator is always OFF 20 14000 0 14350 0 USB 10Hz VFO is always A 19 15100 0 15600 0 AM ikHz Filter is always NORM war 18068 0 18168 0 USB 10Hz AGC is always SLOW 16 17550 0 17900 0 AM 1kHz 45 21000 0 21450 0 USB 10Hz With the frequency mode and step size 13 21450 0 21850 0 AM 1kHz defaults 12 24890 0 24990 0 USB 10Hz 11 26965 0 27855 0 AM_ 1kHz Correcting frequency input errors via 10 28000 0 29700 0 USB 10Hz the keypad Signifies Amateur Band allocation Should you make a mistake when entering a frequency via the keypad there are two methods of correction 37 AARSO5SO operating manual Back Space delete The ENT BS key acts as a BS Back Space just like a computer keyboard deleting data input from the right hand side For example if you wish to enter 3 750 MHz but had keyed 3 7 5 8 the last digit being 8 in place of 0 before pressing MHz press the ENT BS key The last digit on the right hand side will be deleted You can then press the correct key 0 and complete the sequence with MHz Should you press ENT BS twice during the sequence then the first two di
64. se the AR3030 has two VFOs available A and B Two VFOs can be useful for listening to split frequency communications such as a DX pile up on the Amateur bands where a much sort after station is transmitting on one frequency but listening on another Another example would be coastal marine communications where split frequencies are employed Should the optional VHF converter be fitted then split frequency operation known as DUPLEX is common place Single frequency operation is known as SIMPLEX The currently selected VFO is indicated on the LCD by A or B To change from one to another simply press the VFO key To return to the original VFO 26 AARSOS0 operating manual press the VFO key again Note The rotary tuning control is also often historically referred to as the VFO 6 4 TONE Audio tailoring The audio characteristic is adjustable on most modes via the TONE key on the front panel Selecting a high tone setting may improve the listening quality of strong broadcast services such as longwave but where adjacent interference is experienced selecting the low setting may reduce the levels of annoying heterodynes The current setting of tone is indicated on the LCD as HIGH or LOW The actual audio tailoring characteristics are USB LSB AM S AM FM TONE High position cut off frequency 3000 Hz TONE Low position cut off frequency 1800 Hz CW TONE key inoperative Frequency set to 800 Hz FAX TONE key
65. selection of tuning rate to MHz An underscore _ indicates the selection of MHz tuning speed on the LCD Note Frequencies below 1 8 MHz are treated as kHz For this reason 1 MHz cannot be selected using the MHz key in conjunction with the rotary tuning control 5 17 kHz kHz key The kHz key is used to complete frequency entry when kHz selection is required 1 e while in VFO mode 4 7 2 2 kHz While in VFO mode this key alters selection of tuning rate from 5Hz 10Hz indication to hundreds of Hz and kHz An underscore _ indicates the current tuning speed on the LCD While using the VHF converter frequency step size range is 5Hz 10Hz 100Hz 1kHz 100kKHz When tuning in 5Hz steps a square box appears to the right hand side of the LCD 5 18 mtr metre key The mtr key is used to complete frequency band entry i e while in VFO mode to call the 49m broadcast band type 4 9 mtr Pressing 0 mtr while in VFO mode selects manual BFO tuning for CW and SSB modes An o indicator appears on the LCD to confirm selection The same sequence de selects manual BFO 5 19 ENT BS ENTer and BackSpace key This key is not used for frequency entry but to complete sequences of various data such as memory scan and delete During keypad frequency entry this key may be used to backspace delete incorrect entries If you wish to abort the completed keypad frequency entry press MEMO to return to VFO mo
66. sitivity of the receiver in much the same way as the attenuator but is more controllable The usual position for the RF GAIN control is fully clockwise when the set is at its most sensitive As the control is rotated anti clockwise the S meter will advance to indicate what strength signal is required to produce solid and readable results The control is most useful on SSB where the RF GAIN should be adjusted so that the peaks of SSB signals just deflect the S meter This will greatly reduce the level of background noise especially during pauses in speech or inactivity 5 24 Rotary tuning control The large rotary tuning control is prominently located on the front of the cabinet This control changes the received frequency up and down in whatever step increment is selected by the kHz and MHz keys The minimum tuning rate is 5 Hz This control is often referred to as the VFO 5 25 S meter signal strength meter The rear illuminated analogue SIGNAL METER is located to the left hand side of the front panel Relative strength of incoming signal is indicated in standard S points where S1 is weak and S9 is strong Calibration above S9 is in dB As with other receivers the calibration may not be reliable on FM mode 5 26 Loudspeaker internal The AR3030 is fitted with a large 66mm 3 WATT internal loudspeaker Due to clever design sound is projected through a small front mounted speaker grille When an external speaker or h
67. ss MEMO while in VFO mode followed by 0 8 Press PASS to complete the sequence The 08 MEMO and PASS legends will appear on the LCD to confirm operation While in MEMO mode all locked out memory channels are identified on the LCD with a PASS legend You may use the main tuning control in memory mode to scroll through the memory channels 6 19 Pause time programming in scan mode The AR3030 does not immediately scan from channel to channel rapidly This is to allow the receivers AGC and other circuitry to react to the changing noise and signal levels between different frequencies If the scan speed is too quick then weaker signals would be completely missed The pause time for memory scan may be programmed between the limits of 1 55 AARSO5S0 operating manual and 10 seconds The factory default is 5 seconds For example should you wish to program pause time to 3 seconds carry out the following sequence While in VFO mode press SCAN to start memory channel scan Press MEMO to inform the AR3030 that you wish to reprogramme scan pause time The LCD will show PAUSE 5 and the figure 5 flashes to indicate the present value WoW P 3 t L l m Tos ds Fi th ress o alfer usp ti rom 5 to 3 econds Figure 8 replaces the previous fore ee base T from oS WoW m HI ICC Press ENT B of cdmoldte_ the kequencel k beep will confirm complete data input 6 20 Delay time programming in
68. using a half wave dipole is best at 90 degrees to the direction the aerial is laying however if used at two or three times it s fundamental design frequency reception is best closer to the direction the aerial is lying A dipole has two legs running in opposite directions and can be mounted vertically or horizontally most VHF activity is vertical One leg is connected to the centre conductor the coaxial feeder cable while the other leg is connected to the outer screen of the coaxial feeder cable If mounted vertically the centre of the coaxial feeder should be connected to the leg facing upward A simple formulae can be used to calculate the required length of each leg for a half wave dipole 75 Length of each leg in metres Frequency in MHz i e For 14 2 MHz 75 5 28 metres i e the total length of 14 2 the aerial is twice 5 28m Coaxial cables When constructing dipole aerials or connecting VHF aerials 50 OHM coaxial cable should be used For shortwave or short runs of VHF URM43 URM76 or RG58U is ideal for longer runs of VHF feeder it may be worth considering a heavier URM67 or RG213 ATU Aerial tuning units ATU may improve the shortwave section of a wide range receiver by rejecting unwanted signals and only allowing a specific band of frequencies through These ATUs are normally constructed in small boxes with about 3 controls on the front The disadvantage is the need to constantly re tune the ATU wh
69. wish to return to the starting point simply re enter the metre band To achieve the maximum use of the receiver s performance and features it is important to fully familiarise yourself with it s operation through the use of this handbook 6 1 Tuning the receiver using the rotary control 23 AARSO5SO operating manual The receiver may be immediately tuned via the rotary tuning control The free running tuning knob is used to select receiving frequency and in memory mode for selection of memory channel The tuning knob is by far the most traditional approach to tuning on shortwave providing a smooth feel and the best method of user interface especially when listening on the SSB FAX and CW modes It is possible to tune the receiver through it s entire range from 30kHz to 29 99999MHz Rotating the tuning control clockwise increases the displayed frequency and tunes the receiver upward rotating the tuning control anti clockwise decreases the displayed frequency and tunes the receiver downward At some point you may wish to increase the speed of tuning this is accomplished using the kHz and MHz keys You will note a small underscore _ underneath one of the frequency readout digits It is possible to move the underscore by pressing the kHz key The underscore will move from the underneath of the right digit tens of Hz second from right hundreds of Hz and third from right kHz Pressing the kHz key again
70. y control this is especially useful in providing optimum audio quality for SSB operation AGC attack decay may also be selected from the front panel either fast or slow but cannot be switched off Memories amp SCAN There are 100 memory channels which can store frequency mode AGC attenuator bandwidth AF filter tone BFO and lockout status The memories may be used to store shortwave or VHF frequencies if the VHF converter option has been fitted Program scan allows only a selected block of channels to be scanned while lockout permits certain channels to be skipped Pause and delay scan add to flexibility Data may be easily entered into memory and back to VFO where it may be tuned 6 HARSOS0 operating manual There is a massive EEPROM store for all memory channels and VFO data so that no memory backup battery is required The memories may be over written time and time again RS232 computer port A 9 pin D type socket is fitted to the rear case this will permitcontrol of many receiver facilities via a computer Loudspeaker and audio output The AR3030 has a built in 66mm 3 WATT loudspeaker A 3 5mm jack socket is located on the rear panel of the receiver for external speaker connection Connection to this socket automatically cancels audio from the internal speaker Audio output is also available through a quarter inch headphone jack plug located on the front panel of the receiver Use of this headphone socket auto

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