South West RAYNET Association - Exeter Amateur Radio Society
Contents
1. Properties Under the Listen tab make sure Listen to this device is not selected Under the Levels tab slide Microphone to 100 and set Boost to 0 db Under the Enhancements tab ensure Disable all sound effects is ticked Click OK You are returned to the Recording tab Now click on the Playback tab Make a note of the name of the Speakers Usually it is the same as microphone e g Realtek This phrase will also be used later in the Fldigi configuration 10 Click on Levels and make sure the main audio slider is 100 If there is a slider for Microphone click on the small speaker icon to Mute it 11 Important Click on the Enhancements tab and ensure Disable all sound effects is ticked 12 Press OK 13 You are now back in the Sound screen Click OK 14 Reboot the computer A ON i 1 1 3 Raynet Folder 1 Create a folder in which to keep all RAYNET related documentation and forms Right click on the Desktop and select New Folder Change the name to RAYNET Data Files 2 Double click on the RAYNET Data Files and in the empty folder create the following folders using the same sequence Documentation macros Pending Files Received Files Templates Copy and Transmitted Files 3 Using the weblink in the Resources section at the end of this document downloa2. gt http www g4zlp co uk Instructions Device_Manager Device_Manager pdf Tigertronics Signalink USB information and jumper settings gt http www tigertronics com CHALET form and ICEmacros madf file gt http www exeterars co uk raynet gt http www swraynet org uk Page 10 of 14 5 Appendices 5 1 ICEmacros_v5 mdf onwards Macro Macro Meaning Action Number Abbreviation Tuning Transmits a tuning signal to allow all stations to net in on your station Transmits your callsign QTH and Name as On net ready 5 Adds pre amble to an out going message 6 EndofMsg Adds post script to your message and Transmits whole message 8 Ack Msg Sends message received 9 DTG Adds a date time group to a text string o Z o Adds pre amble to a free QSO contact Puts blank chalets form in Tx window ready for editing prior to being CHALETS transmitted Puts blank Message Form in Tx window ready for editing prior to being transmitted Macro buttons 25 48 are not used in the I CEmacros_v x mdf set A complete Raynet macro set with 48 common macros is available as Raymacros mdf To use all 24 macros select CONFIG User Interface or UI Macros Number and position of macro bars gt select option 2 3 or 5 personal preference Start of Msg EndofMsg M Say Again M ACK Msg PI DTG VOX P gt Rx II TX 2000 2500 3000 ae 3500 4000 4500 5000 A
3. ae we Jal o Pa rl J el wl nom al 1000 gt r store Jr e cQ M ANS Pl Free QSO BTU gt t SK M Blank Chalet GSRXA Chalet Pl Send CW ID BPSK31 BPSK125 BPSK250 BPSK500 BPSK250 lr arc rsc To just use the Simple Version 12 macros select Number and position of macro bars gt One bar above or below waterfall personal preference we 2 r v lef a J wy NORM aa a 1000 gt oe Store k F FTR Page 11 of 14 5 1 1 Macro button symbols xxxxx Il Insert data at the end of a line but do not transmit gt gt gt XXXXX Insert data after a group of text but do not transmit xxxx gt l Insert data and transmit xxxx stand alone action 5 2 Radio Rear Panel Connectors This wiring layout is for most 6 Pin mn N Male Pin Side common makes and models of RADIO Receive Audi radios which use the 6 pin mini din However there are exceptions ras aN O OA 3 A 4 Cable Shell s Pai Please check your owner s CA 2 s XY OO Qe handbook or manual for your SEDA ae roun particular radio Transmit Audio Pin Label Use I PKD Data In Use 1200 data out for Digimaster Minipro and Pro 5 3 Updating Fidigi If you update to a later version of Fldigi it is important that you remove any previous version as there has been a change in the way the files are stored and saved due t
4. preferably with the group controller to maintain legal obligations amp the EPO or user service Ideally the saved files should be transferred to the designated person s by usb memory stick Once safe transfer is confirmed it is important that all information is removed from all Raynet non designated machines to preserve confidentiality Hard copy print outs should not be held by Raynet personnel but handed to EPO or user service 3 2 Signal Logs In the case of exercise ICE or other inter group county zone operations a log of signals heard by data voice should be completed and forwarded to the appropriate Net Controller Callsigns frequencies signal RS and Locations Talk through units used permit number using the ICE Log form 4 RESOURCES Fldigi main website http www w 1 hkj3 com gt Fidigi downloads http www w1hkj com download html gt Fldigi user guide http www w1hkj com beginners html gt Fldigi waveforms and sounds lookup http www w1hkj com FldigiHelp 3 20 Modes index htm Digimaster Pro main website http www g4zlp co uk gt Digimaster Pro http www g4zlp co uk unified DM_PRO_PLUS_complete shtml gt Digimaster Pro Installation http www g4zlp co uk Instructions DigiMaster_PRO DigiMaster _PRO pdf Digimaster Pro Com Port Test gt http www g4zlp co uk Downloads DigiMasterUtilities DigiMaster_PRO Fin d_DigiMaster_PRO exe Digimaster Pro Driver Windows XP and Vista Device Driver instructions
5. A AA A 13 JADIS Master Pro ais dotes atando boicaduaad 13 do imemal LEE coda tocino ea 14 VISErironies siena USB dino 14 Page 2 of 14 Introduction This document aims to describe how a Raynet member should prepare for and use data modes during RAYNET operations This document draws heavily on the Fldigi Operating Guide prepared by the late Mike Sloan GU3WHN RAYNET Controller Bailiwick of Guernsey which was updated for ICE9 by G8RXA and G6BJJ and on the guide written by Nick Johnson 2EONRJ for Exeter ARS RAYNET s choice of computer operating system software applications data interface and radios Full credit for the scope and detail of this guide is due to them Before a RAYNET member attends an exercise they should run through the PREPARATORY Section This will ensure a minimum of set up and testing time in the field Once in the field for the event the member should follow the OPERATIONS information Finally the member should archive and clean up using the POST OPERATIONS information 1 PREPARATORY This document assumes that participating members are using the following devices 1 Portable computer using the Windows 7 Vista XP operating system 2 The latest Fldigi software program Will also run under Linux and other o s 3 G4ZLP Digimaster Minipro Digimaster Pro Tigertronics Signalink USB data interface and associated cables or similar 4 UHF VHF transceiver Note Do not use the CAT interface Befo
6. cable from the Signalink USB to the Radio The appendix to this document contains a copy of the standard Mini DIN layout for most radios 10 This completes the basic Signalink USB installation 1 3 Radio 1 3 1 Data mode For the purpose of the RAYNET exercise on VHF UHF data modes will be used on the same frequency as audio so there is no need to change the Mode away from FM On HF operation you would change to use DIG mode But the baud rate and connections must be set to 1200bps 1 3 2 CAT interface It is strongly recommended that you do_not use the CAT interface for Raynet data operations at VHF UHF due to conflicts with some operational parameters If you are using the CAT interface i e for non Raynet work you must make sure your radio is correctly configured Use the configuration buttons on the radio to set the CAT interface speed and assignment per the user manual 1 3 3 RF Power level Data modes need to operate over a linear part of the power amplifier in the transmitter Therefore do not run the RF Power level at 100 as this will distort the audio frequencies leading to garbled data transmission and resulting in over modulated distortion Set the RF power level to about 40 of the maximum rating of the transmitter e g 40W on a 100W rated transmitter 1 4 Fldigi Software Fldigi software is an encapsulating environment i e a suite of software However the Fldigi software ranks as one of the
7. of the Raynet Control in the logging window at the top of the screen Play a macro by clicking on the Macro 2 button My ID Text will appear in the Transmit window and a burst of tone through the laptop loudspeaker will be heard While this tone is playing you should hear a click from the data interface implying 1t would be generating the PTT for the transmitter If this does not happen it is best to call another Raynet member and talk through your tests Assuming the audio could be heard then you are ready to proceed Connect the leads from the Digimaster to the radio Page 7 of 14 Some radios especially handhelds require a link to be closed on the circuit board See section 5 4 below 2 OPERATIONS 2 1 Fldigi usage Operation is on VHF UHF within the Zone and generally BPSK mode is used although any data mode could be employed A one to one exchange with control is assumed but the procedure is equally capable of outstations sending data to each other as long as Control is actually in control of the net to avoid confusion and interference All links will be established prior to turning the net over to data Each station with data to transmit must first notify Control and await clearance The rest of the net is placed on standby during the transmission of the data Data for transmission must be recorded although not necessarily on paper It must however be capable of being printed out in hard copy form This must be file
8. South West RAYNET Association Representing all Radio Amateur Emergency Network groups throughout the South West of England Kaynet Data Operations Guide Version 1 4 2 17 May 2012 By lan Harley G6BJJ South West Raynet Association Data Working Group Table of Contents lPREPARATO Mo aevdaia a dalvusiademasieue 3 ME hen ca ataen aa Galea entatoane ound ce dues acai eauelantac tassbea weakens den tus ila Manan etant ee sakanie 3 ell CHOC Ol A ah eiaibanadua ecb 3 AS A dark te 4 Lal Say net POMEL sis ccner cis kets a aa 4 12 Data leader aida 4 1 21 GA4AZLP Disimaster Minipro and Prot ia 4 22 Tigertronies Sienalink USB ia aa 5 LARA odia ia 6 Ll Data modera diia 6 BS OR OV EME dios 6 Lo RP Power vel ds 6 A e A inns Seeit aes eeseeund uae 6 A eee E PA ON T en ar reeaee E EI T it oer ene OE a ern re 7 OPERA TITON Saa 8 PAE UG T E Sct e cack Grscaines E E te cace bends Sacteame aang be qass A AE 8 22 Example ota CHALETS templates atari 8 DD al NACO USO aii oo ici 9 3 POST OPERATION Sisa daros 10 A E ume A ae 10 A O 10 RESOURCES A O E En A II O eRe ee ene ee 10 A E A A 11 IIE E MICOS AA PI ae Gece eine Neos eae II eee haneinotsD Se aieente cine 1 Sell Macro Butono mba dos bo 11 5 2 Radio Rear Panel Connector asco lb rada 12 o a 3c A A A Deer eee nn eee tere BE Tne tone Meter n ean tress Pr 12 5 4 G4ZLP Digimaster amp Digimaster Pro connections oooooccccccccncncccccccnnnnannnnnnnn ooo 12 4
9. al series of jumpers which must be configured for each radio The exact settings for each radio must be determined by reference to the Tigertronics Signalink USB website www tigertronics com sl_wirebm htm or the product CD The following instructions are adapted from the instructions referred to in the Resources appendix at the end of the document Place the Signalink USB so that the power push button is on the left Push its power button in Set the three front panel controls transmit receive and delay level to the 9 o clock position Attach the USB cable from the computer to the Signalink USB and power on the Signalink Windows should identify the Signalink and use the correct drivers to enable the interface The green LED when indicates power is on and the interface is in receive The red LED indicates TX either DATA or CW 5 Locate the correct COM port by using a test program or in the computer s Hardware manager It reports on a COM port interfaces with information such as COM 4 Signalink USB port 6 Make a note of the exact COM port numbers which will be needed when Fldigi is configured oe E Page 5 of 14 7 Go to the Audio Device manager on your computer You should now see a new audio Communications device Enable this device and mute all other input and output lines Set this as the default for communications 8 Itis possible to monitor the audio via the Speaker socket on the back of the Signalink USB 9 Attach the
10. d for legal reasons This will typically be a CHALETS Message Pad text file 1 Prepare this data file while you are off air Open the Raynet Data Files folder on your Desktop open the Templates Copy file 3 Right click on CHALETS Text Form Master and select Open With Notepad do not use WordPad or Word as these add unwanted formatting characters 4 Edit the form with the data on the submitted message form You will note that it reflects exactly the fields on the approved CHALETS form using the alpha numeric identity of the items rather than the text titles 5 Save As the file into the RAYNET Data Files Pending Files folder Save it as a separate Text File in a suggested format of either a lt call sign gt Serial txt 1 e g4wdr0022 txt or b lt call sign gt DTG_Serial txt 1 e g4wdr102030_001 txt 6 Close the file An example CHALETS text form for Data transmission via RAYNET is shown below 2 2 CHALETS TEXT FORM for Data transmission via RAYNET From CEPO Location DORCHESTER To CEPO Location PLYMOUTH Info DTG 102030 A Incident ICE9 Serial 001 Ca 1 100 2 3 H 4 5 6 NO 7 8 A 9 10 11 YES 17 13 14 40 E 15 16 17 18 Pa 19 TRAIN 20 Sr 2 22 Sent DTG 102035 A By GBRXA You should now prepare to go on air Page 8 of 14 On the main Fldigi screen enter the receiving station RAYNET Control call sign locatio
11. d the CHALET Text Form Master txt into the Templates Copy folder 4 Also download the latest ICEmacros_v x mdf file into the fldigi files macros folder 1 2 Data Interface The main interfaces considered are the G4ZLP Digimaster Minipro and Pro series and the Tigertronics Signalink USB Other interfaces are available but due to their number are not covered here as the two above have been tried and tested extensively by the SWRA Data Working group and have found to be reliable and simple Careful reading and following of the manufacturer s instructions manual is taken for granted however some additional tips are given below 1 2 1 G4 ZLP Digimaster Minipro amp Digimaster Pro The documentation for the Digimaster series can appear bewildering as it does not clearly specify the functions of the unit Instead it describes in great detail its versatility and vast number of protocols and radios that it works with The device essentially provides isolated interfaces for the audio input output which gets around awkward earthing problems when using a computer and radio both connected to the same earth It also adds a USB interface to control PTT keying A useful feature is the CAT interface that allows simple remote control of the radio from Fldigi or Ham Radio Deluxe or Digipan However this is not compatible with Raynet operations Inspect the Digimaster Pro unit rear connectors and Page 4 of 14 cables Correct i
12. formers eiii opto s j C rf Ei PTT PTT Relay L Single or Dual USB module USB1 USB2 option gre module CM1 2 3 option Digimaster Minipro PTT link Digimaster Pro PTT link PTT Link some radios mainly handhelds and Kenwood s require this link to be closed This shorts the microphone and audio ground lines If your PTT does not work after setting all the correct port speed and RTS DTR options try closing this link 5 5 Tigertronics Signalink USB SPKR AUX Iinbegraled CSA Sound Card 3 Tigertronics www tigertronics Signalink USB Front Signalink USB Rear 6 pin Mini DIN Data Port Connector jumper settings JP 1 Pin out Radio Models alo ols Pin 1 Data In IC 207H 208H Glo o 7 Pin 2 Ground IC 2720H series G ol 6 Pin 3 PTT IC 2800 IC 2820 0 5 Pin 4 9600 Out IC 703 706MKIIG pi o a Pin 5 1200 Out IC 746PRO MIC 7 Pin 6 Squelch IC 7000 1C 7400 SPER fia 1 IC 910H IC 9100 FT 7800 FT 8800 FT8900 This list is not exhaustive Check your own radio Page 14 of 14
13. indows 7 is the easiest to configure The latest operating system version is easiest to use so the faster you will be using the software Make sure you are connected to the Internet because during installation as you will need to download applications and reference files which is not possible once you are in the field Page 3 of 14 1 1 2 Sound You must understand how your computer processes audio You will need to recognize and use the names of the individual subsystems for recording audio and playing 1t back Audio can be recorded using a microphone built into the front of the laptop computer or using an external USB webcam or from a 3 5 mm audio jack on the edge of the computer Audio can be played back through internal loudspeakers or through a 3 5 mm audio jack on the side of the computer The exact menus and their options are very dependent on whether you are using a standard audio interface or an additional sound card For a basic laptop with no attached webcam follow these instructions 1 If you are using a USB sound card plug it in and wait for Windows to configure it by monitoring the pop up messages from the System Tray 2 Right click on the Speaker icon in the System Tray and select Recording Devices A Microphone should be listed Make a note of what it is called e g Realtek High Definition Audio This phrase will be used later in the Fldigi configuration Click on the Microphone and then click on
14. int Ensure all data has been copied and remember that the cursor must be at the end of the edited file before transmission If not only partial data will be sent The radio returns to receive Once the file has been transmitted wait for confirmation message from Control that the file has been received Ack Message Be prepared to re transmit Say Again If OK save the transmitted data in the upper window by highlighting the text to be saved then using right click to bring up the menu 1 e Save to file Choose the Raynet Data Files Transmitted Files folder and save the file using a unique file name appropriate to the operation Clear both windows of all data Right Click Clear At Raynet Control the Controller will also right click on the file he has received and save it in a relevant folder using a unique file name A hard copy may be printed at Control to enhance the audit trail Repeat this sequence as necessary Clear both windows of all data before preparing a new message If you find you have made a mistake in sending data or the transmitter locks On you can perform an emergency transmit stop and force FLDigi and the radio back into receive mode by pressing the macro button Page 9 of 14 3 POST OPERATIONS 3 1 General After operations are completed it is important that all stations remain on net until stood down by control All the data must be saved to a designated secure location
15. most reliable and versatile of the data mode applications As there are so many data modes over 60 there are many options to support so when looking at the program user interface for the first time it can be daunting Before going any further read more about the program on its Wiki page references in the Resources page as Fldigi user guide 1 Download the latest stable Fldigi application from the reference in the Resources page for Fldigi downloads If you have a previous version of Fldigi it is important that this is completely uninstalled prior to loading a new version using an uninstaller and registry cleaner such as REVO 2 Run the downloaded program answering Yes to all the questions When installation is complete locate the new Fldigi icon and double click to start the program 4 Fldigi uses a folder of customized information called fldig1 files in your Users directory If this is the first time the program has been run it will ask questions about you and your computer to start creating these customised files A set of wizard screens will request information from you 5 Under Operator Information enter your Call Sign Name QTH and Locator as they are required by the ICEmacros You can leave the Antenna fields blank unless you plan on doing HF data modes with other hams Click SAVE 6 Under Audio Drivers Devices select Port Audio Remembering the names of the audi
16. n and name details Note that the VOX button is used to alert others that voice communications are required as most stations will have their speaker muted 2 2 1 Use the ICE Macros in this order E 11 12 13 14 15 16 Tuning My ID this logs you as On Net with control Even centering everyone s Waterfall to the same location 1t will still be necessary to send a transmitted test tone for participants to net in owing to a degree of uncertainty with individuals radio frequency settings Control should reply with Ack Message Msg 4U this sends a Tx request to Control other station When given the go ahead to send Send ur Msg click macros in this order Start of Message DTG this puts correct headers on the message for you Place cursor below last entry in the Tx window Right click Insert File Scroll to your preprepared completed CHALETS TEXT File in RAYNET Data Files Pending Files The text is automatically pasted into the window Scroll to the bottom of the lower Tx window Check the accuracy of the data gt Check the accuracy again Make absolutely sure that the cursor is at the end of the file Check again that the recipient s call sign and location has been entered in the top logging window Click on the End of Message macro button All the above macro s and file content is now transmitted The file will appear to transmit to the top window at this po
17. nstallation appears difficult because there are no socket labels however by looking at the following diagram copied from the Digimaster s instructions you will see that there is only one way to connect the unit The following instructions are adapted from the instructions referred to in the Resources appendix at the end of the document Digimaster Pro Installation OG4ZLP Electronics 2011 For the Digimaster Pro for the Digimaster MiniPro jump to step 3 1 Place the Digimaster Pro so that the power push button is on the left Push its power button in 2 Set the two front panel controls transmit and receive level to the 9 o clock position 3 Attach the USB cable from the computer to the Digimaster 4 Windows should identify the Digimaster and use the correct drivers to enable the interface When Windows has configured the port the red LED indicator on the Digimaster Pro flashes red green three times The LED when green indicates power is on and the interface is in receive When red the LED indicates TX either DATA or CW 5 See the Resources page in this document appendix and download the Digimaster Pro Com Port Test program It will download an executable program called Find Digimaster PRO into your Downloads folder 6 Double click on this downloaded program Click OK or Yes to any pop ups about security A small application opens with a single Find button 7 Click on the Find button and
18. ntrol to adjust squelch ALC Slide it to between one third to half way up depending on signal strength received Too low a setting introduces random characters Too high a setting can lose data 26 Select the correct data mode to use Click on Op Mode NBEMS modes or BPSK BPSK250 Raynet Control may later request this be changed should propagation conditions be un favourable To typically BPSK500 or BPSK125 or even down to BPSK31 27 Click on File Exit 28 Start Fldigi again and ensure a message confirming the loading of the I CEmacros_v x mdf file has been completed 29 If you change the mode at any time you will need to apply the Lk button again 1 5 Testing To start testing disconnect cables between the Data Interface and the radio This will stop you accidentally sending bursts of tone data when you were not planning to do so If your laptop has a headphone socket you can remove the audio jack and listen to the generated BPSK audio through the laptop loudspeaker This is a good test to ensure that you have correctly configured Fldigi audio Similarly if the laptop has a built in microphone you can use it to pick up sounds that are randomly displayed as noise on the waterfall display Make sure that both Receive and Transmit windows are clear Right click in each window for the drop down menu in each window to achieve this Enter the group or operators name call sign and location
19. o devices you noted in the Computer Sound setup use the drop menu arrows to select those names for Capture Recording and Playback Click SAVE 7 There is nothing to alter under the other two tabs Settings and Tx Level so click Rig 8 The Rig screen has five tabs Commence with Hardware PTT Click on Use Separate PTT Select appropriate COM port for the PTT FSK CW port you recorded earlier Set Use both RTS and DTR The Initialize button will go red Click Initialize to activate the port Click SAVE 9 Click on SAVE UY Page 6 of 14 10 The Wizard ends and the Flidigi program start running 11 Click on File Exit When asked to save the configuration information click on Save 12 In your Users folder there is now a customised fldigi files folders containing the information you have entered 13 Start Fldigi again 14 If you have not already done so download the latest SW Raynet Fldigi macro file ICEmacros_v x mdf 4kb that contains definitions for each of the Fl to F24 macro keys The weblink is in the Resources section near the end of this document A full explanation of these appears in the Appendix 15 Move the file to the folder C users name fldigi files macros 16 In Fldig1 click on File Macros Open Change to the above folder and select ICEMacros_v x mdf The new macro bar should n
20. o a problem with security settings in Vista and Win 7 If old versions are not completely removed they can cause conflicts in the Windows Registry The use of an uninstaller amp registry cleaner such as REVO UNINSTALLER Freeware is strongly recommended From time to time updated macro definition files will also be issued The main versions are gt ICEmacros_y x mdf basic 24 button macro set designed for ICE Zone and Group working amp gt Raymacros mdf extended 48 button macro set for Raynet operations The current January 2012 ICE macro file is ICEmacros_v5 mdf Page 12 of 14 5 4 G4ZLP Digimaster Minipro and Digimaster Pro Connections 5 4 1 Digimaster Minipro ON OFF switch LED Green RX RED TX Front of Digimaster Minipro yellow sam slips jack 6 pin mini din connector USB type B connector PC Audio IN OUT RADIO 1 1 In tip White Audio from radio Yellow PC Audio In Mic Out ring Red PTT Green PC Audio out Spkr Note new versions may be coloured Red Yellow Audio to radio Black PTT gnd Metal work Radio Chassis ground Rear of Digimaster Minipro 5 4 2 DigimasterPro Front of Digimaster Pro with internal sound card controls Audio tofrom PC DATA lead to radio CAT lead to radio CW lead to radio USB lead to PC Rear of Digimaster Pro Page 13 of 14 5 4 3 Internal PTT link pida link __ PIT link Le Output level Isolating E Trans
21. ow appear as shown on page 10 of this guide Click on Configure User Interface Select the Macros tab 17 Enable the last two options on the page Load last used macro file on start up and Display macro file name on start up 18 Click on Configure Misc Sweet Spot Make sure all the values are set to 1000 This 1s the default offset of 1 kHz for each data mode 19 Click on ID set the Pre Signal Tone to 3 seconds This sets a 3 second delay to allow any talk through units or repeaters to latch Click Save 20 Click on Waterfall Display Click on Always show audio frequencies to enable it 21 Click Save and Close 22 If you want to change the size of characters displayed by Fldigi use Configure Colours and Fonts You can use this to increase the size of received text for example Click on Close 23 Slide the cursor to 1000 Hz on the waterfall and then click on the Lk button under the display to hold it at that value You can fine tune the value using the adjacent arrow keys A single arrow changes the value by 1 Hz and the double arrow by 10 Hz Do not use the AFC 24 At the base of the screen ensure the waterfall signal range settings are set to 20 dB and to 70 dB for the signal range You can alter the values with the adjacent arrow keys 25 At the bottom right of the screen is a slider co
22. re attending an event it is essential to assemble and test the hardware cabling and software and To learn to use the Fldigi software This Preparatory section explains how to get started assuming you may not have used any of these devices before Some points e Operation is primarily on VHF and UHF HF especially NVIS is also feasible but not covered here e A single frequency is used on VHF UHF with a Controller determining the use of that frequency At any time voice conversations OR data bursts can be heard between the Controller and members This technique is a standard and has evolved to minimize the number of stations required on a net 1 1 Computer 1 1 1 Choice of hardware You will need to have a laptop or netbook computer running a recent version of the Microsoft Windows operating system The computer should have at least two USB sockets and audio jacks for Microphone In and Headphones Out The Digimaster s use the computers sound card and requires these two audio sockets The Tigertronics Signalink USB has an internal soundcard and does not require the audio input amp output lines instead it uses the USB port Although the programs do not require fast processors and large memory newer laptops or netbooks have a battery life of over 4 hours which is very useful in the field If you use an older slower computer with Windows XP or Vista you may be slowed down with installation problems The most recent version of Windows W
23. wait 20 seconds while the program scans up to 96 virtual COM ports When it completes it reports on two COM port interfaces with information such as a COM 8 G4ZLP Digimaster PRO PTT FSK CW port and b COM 9 G4ZLP Digimaster PRO CAT port LOOPBACK 8 Make a note of the exact COM port numbers which will be needed when Fldigi is configured 9 Attach the audio cable from the computer to the Digimaster Take care to align the arrow on the connector housing with the top of the unit It is a tight fit on the Digimaster Pro 10 Attach the cable from the Digimaster to the Radio The appendix to this document contains a copy of the standard Mini DIN layout for most radios On the Digimaster Minipro jump to step 13 11 Attach the CW PTT cable from the computer to the Radio 12 If the Radio has a CAT interface it is recommended that you do not connect or use the CAT cable Take care to align the arrow on the connector housing with the top of the unit It is a tight fit on the Pro 13 This completes the Digimaster installation 1 2 2 Tigertronics Signal Link USB The Tigertronics Signalink USB is very similar in operation and set up to the Digimaster Pro It has an on board Sound Card with level controls on the front panel plus a delay control to hold Tx Rx actions All audio connections to the computer 1s via the USB line See Appendix 5 5 for more detail A major difference however is that the Signalink USB has an intern
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