Manual - Elecraft
Contents
1. Our IN BG NAD si J z 7 To 40 60m BPF XVTR RF 1 J15 IRE s ai y 4 2 3 4 Vv 46K 2N3906 TRF D Wh P41 w RFC2 cs c6 15H 01 kih 4 7 kio To XVTR VO oy o o 0 Hits dle WW 2 4 7 9 3 8 470 Zz SE lt K2A XVTR T R a 4 R8 c5 o pua i ele TXIN r pe ee 4 22 eo ro 5082 3081 7 c11 a o at Aco lt BE 2 01 8 50 47 47 8 50 ete ae T i el Pi 8 v7 60m Vv 2 ev fo a rep 9 01 R7 ka 470 K1 and K2 are DPDT latching relays shown in RESET position Pins 5 and 6 of the relays are not connected internally c14 01 e a Qa bw ILP PIN 6 of J13 on K2 RF board is normally 8T 8V TX and must be reconfigured for use as VRFDET see text R1 zi VW ji 4 MHz 100 c12 AUXBUS VRFDET 3 6 VDC 1 0 mW ay 001 HE 0 Ht Vv Ta ay TXRF LMC662 K2 U2B Vv 5 Kt F a mN T RFC1 D3 6V p D 15yH 1N5711 we 1N5711 PN2222A C10 R2 001 1M R4 100K Vv R6 R5 A XVTR ALC 91K 3 i 2N7000 Vv J2 XVTR Control J2 PIN FUNCTION GROUND XVTR KEYLINE XVTR SELECT 0 XVTR SELECT 1 XVTR SELECT 2 Binary encoding of ADR parameter in TRN menu entries See text anon Not required with Elecraft XV Series Transverters Note All components are located on the bottom of PC board except resistors diodes J1 and J2 20 Elecraft C72. U Connect a 50 ohm dummy load or a resistor as close as possible to 50 ohms to the XVTR OUT jack L Switch to CW mode Set the POWER control for approximately 1 0 milliwatts P1 00 LP will be displayed where LP is a reminder that you re using low power transverter I O on the present band L Enter TUNE mode The bargraph should be at full scale indicating 1 0 mW and the LCD should also indicate a power output of approximately 1 milliwatt If not see Troubleshooting Cancel TUNE 14 Using the K60XV Note If you remove the K60XV you ll need to reconnect the RF path on the K2 RF board in two places 1 insert a 4 7 pF capacitor into pins 1 and 3 of J15 2 insert a jumper between pins 3 and 5 of J13 Leave all RF board components you installed in place and leave the D19 menu entry set to Y The 60 m band and low power transverter I O will no longer be available but the K2 should otherwise function normally 60 Meter Operation Before proceeding you should become familiar with the 60 meter regulations in your country or region Detailed information is available for the following entities check our web site for others U S http www arrl org FandES field regulations faq 60 html United Kingdom http www rsgb hfc org uk operating 20procedures htm Enabling 60 meters To use the K60XV on 60 meters D19 must be set to Y and the associated hardware
3. Transverter selection and control Using the ADR address field of the TRNxX menu entries you can specify which specific Elecraft XV series transverter should be enabled when you switch to each transverter band display This is especially useful with the XV144 which is often used as an I F for multiple microwave bands XV series transverters include an address selection switch that must be set up to match the value in the ADR field Refer to the XV series manual for details The K60XV also outputs the binary value of the ADR field on three pins of J2 for use with transverters from other manufacturers These signals must be externally bypassed and buffered if they are to be used for transverter control Note The Elecraft KRC2 universal band decoder also decodes the ADR value and provides numerous relay drive outputs for use with transverters or other gear Transverter keying Elecraft XV series transverters are keyed via the 8R line available via the AUX I O connector on either the KIO2 or KPA100 module Third party transverters can be keyed via an external hardware interface derived from the 8R line An alternative if relay drive requirements are low is to use the K60XV s built in transverter keying device a 2N7000 MOSFET The keying signal is available on J2 Using low power and high power transverter I O The TRNX menu entries OUT parameter has a dual range LO 01 L1 27 milliwatts and HO 1 H12 7 watts In both cases these
4. Ref Description Qty Part No C1 C2 Cap trimmer 8 50 pF bottom adj 2 E540005 C5 Cap 2 2 pF alt 2 pF 1 E530047 C6 Cap 4 7 pF alt 5 pF 1 E530048 C3 C4 Cap 47 pF 47 or 470 2 E530014 RF C71 Cap 120 pF 121 1 E530041 C10 C12 Cap 001 uF 102 2 E530129 C7 C8 C9 C11 C13 C16 Cap 0 01 uF 103 8 E530130 D1 D2 Diode PIN labeling includes 30 81 2 E560014 D3 D4 Diode small signal shottky 1N5711 2 E560004 RF D19 RF D20 Diode varactor MV209 2 E560006 J1 J2 Conn 0 1 spacing pads only see text 0 n a J3 J4 Conn phono jack panel mount 2 E620078 J5 J6 Conn BNC alternative to J3 J4 2 E620001 RF J13 Conn 8 pin female 0 1 spacing 1 E620005 RF J15 Conn 3 pin female 0 1 spacing 1 E620009 K1 K2 Relay DPDT latching 2 E640001 Pl Conn 8 pin male extended pins 1 E620076 P2 Conn 3 pin male extended pins 1 E620077 Ql Transistor PNP 2N3906 1 E580000 Q2 Transistor NPN PN2222A 1 E580001 Q3 Transistor MOSFET 2N7000 1 E580002 RI Res 100 ohms brown black brown 1 E500010 R7 R8 Res 470 ohms yellow violet brown 2 E500003 R9 R10 RF R29 Res 10 k brown black orange 3 E500015 R6 Res 91 k white brown orange 1 E500131 R4 Res 100 k brown black yellow 1 E500006 R3 Res 470 k yellow violet yellow 1 E500132 R2 R5 Res 1M brown black green 2 E500024 RFC1 RFC2 RF choke 15 uH brown green black 2 E690046 Ul IC microcontroller PIC16C621A 1 E610018 U2 IC dual op amp LM358 1 E6
5. LJ Install phono jacks in the XVTR holes in the heatsink using 1 4 lock washers inside and outside see drawing below Use a solder lug on the left connector only folding the lug away from the panel Note These jacks can be tightened from the rear of the panel due to their hex shaped flanges O Prepare three 1 25 mm jumpers using 24 stranded hookup wire black insulation Strip 1 8 3 mm of insulation from each end Twist the strands together then tin them very lightly LJ Solder one wire to each phono jack as shown Solder the third wire to the lug L To see the location of the K60XV module relative to the two jacks plug it in temporarily P2 to J15 on the RF board P1 to J13 Unplug it and tilt its front edge upward to gain access to the pads of J1 Insert the free ends of the three wires into the K60XV PC board at J1 pins 1 2 and 4 as shown from the bottom side Then fold the K60XV downward to gain access to the top side and solder P2 P2 and P1 are on bottom of PC board PC Board Wires routed to J1 from underneath 11 K60XV Module Installation U IfaK160RX option 160 m and Receive Antenna is installed you may need to adjust the position of the RX ANT ground lug to prevent interference with the K60XV board in the next step This ground lug should not be rotated to face upward as it may contact one of the top cover option modules KAT2 or KPA100 The lug should instead be rotated so that it
6. 2 watts Q Enter mode then adjust the two trimmers for maximum transmit output Cancel TUNE L Switch to 40 meters and repeat the previous 3 steps L Set POWER to 10 watts Verify that you can reach this level in TUNE mode on both 40 and 60 m L Re install the top cover or KPA100 module re connecting all of the internal connectors Secure it with six screws If you re re installing a KPA100 be careful not to overtighten the side panel screws 13 A If you have a KPA100 100 watt stage installed that has not yet been upgraded as explained on page 2 you must not use it on 60 meters The signal will not meet K2 spurious emission specifications and you could damage the final amplifier transistors 0 Ifyou have a KPA100 installed that includes recent upgrades as explained on page 2 set power to about 50 watts Otherwise skip the next two steps CL Connect an appropriate dummy load and power supply for high power operation L Using TUNE mode verify proper power output on 60 meters L Read the 60 meter operating instructions starting on the next page before transmitting on this band Low Level Transverter I O Test L Tap MENU Tap DISPLAY to switch to the secondary menu SEC Locate the TRN1 menu entry using BAND BAND or the VFO knob Hold to edit the parameter and set it to ON L Tapping DISPLAY scrolls through the various transverter setup fields Tap DISPLAY and set RF to 50 MHz Then set IF to 28 MHz OFS to 0 0
7. A B L You should now be able to tune the 60 meter band using the VFO knob If not see Troubleshooting 40 60 Meter Alignment CL Connect the lead of a DMM digital multimeter to the lead of R30 nearest the case side panel R30 is in the synthesizer area of the K2 RF board Use a small alligator clip to ensure a good connection Connect the lead to one of the ground jumpers on the RF board Set the DMM for to measure DC volts 10 V or higher full scale L Switch to 40 meters Set the VFO first to 7000 then 7300 kHz noting the DMM s voltage readings at each frequency Switch to 60 meters and perform the same test at 5300 and 5450 kHz LJ Ifany of the above readings are below 1 0 V or above 7 5 V you ll need to re adjust the VCO inductor L30 as explained under VCO Alignment in the Alignment and Test Part II section of the K2 Owner s Manual Note Add 60 m and 160 m if applicable to the list of bands shown in Table 6 1 and use 1 0 V as the minimum not 1 5 V If you re unable to find an acceptable setting for L30 see Troubleshooting L Connect an antenna to the K2 While listening to and noise or a weak signal use a small flat blade screwdriver to peak the two trimmer capacitors on the K60XV module C1 and C2 The screwdriver used can have a metal handle since the rotors of the trimmers are grounded L Connect a dummy load to the K2 Set the POWER control about
8. are upper limits and the POWER knob can be used to go down from there Low power 0 01 1 27 mW settings require the K60XV option The low power detector works best if you avoid POWER settings under 0 10 mW The low power display shows for example P 1 00 LP where 1 00 is the power in mW and LP indicates that the low power output on the K60XV is selected high power path disabled Full scale on the bargraph is 1 0 mW in LP mode The H settings specify that the K2 s normal high power path should be used along with an upper limit from 0 1 to 12 7 watts 100 s of MHz digit If you select 10 Hz VFO steps on a transverter band whose RF parameter is set for 100 MHz or higher the 10 Hz digit is only shown for 1 second then the display shifts to the right This allows the hundreds of MHz digit to always be displayed 17 Troubleshooting A If your specify problem is not covered below re check component values diode and IC orientation and look for soldering problems bridges leads not soldered cold solder joints If the S meter shows full scale and the receiver is always muted The coax cable on the bottom of the board may be connected to some pin other than pin 6 on J13 If the 60 meter band is not available between 80 and 40 meters or if you see INFO 080 on the LCD You may have the K60XV module plugged in incorrectly at J13 8 pin connector If not you could have a problem with the microcontroller on the K60XV U1 Unplug the K60XV mo
9. be memory 1 4 Edit the RATES secondary menu parameter Tap DISPLAY to select CH SC channel scan enabled or CH SC TN channel scanning and manual channel tuning enabled Note The nor normal setting of this parameter disables both 5 Exit the menu then this memory using the one you recalled in the previous step If manual channel tuning is enabled you can now use the VFO to hop among memories assigned to this band 6 To start channel scanning on the desired band hold then hold the numbered key corresponding to the initializer memory you saved earlier e g Holding the numbered key for about 1 2 second will show SCAN on the LCD If you continue to hold the key for another 2 seconds you ll see AF ON initiating live unmuted scan 7 You may wish to program Aad or GF as a scan resume function using the PF1 or PF2 menu entry This will allow you to quickly re start scan from where it left off As with the method you can hold Gg or GF for about 1 2 second to start normal scanning or hold for an additional 2 seconds to start live scanning AF ON Using RIT and XIT with channel hopping If you have channel hopping enabled and you need to fine tune your operating frequency simply turn on both RIT and XIT at the same time The RIT XIT offset potentiometer will then function as a limited range VFO control moving RX and TX frequencies equally 16 Transverter Operation Basic transverter u
10. is either below the RX ANT jack or so it fits into the cutout on the K160RX module L Plug in the K60XV module Make sure the 3 and 8 pin connectors P2 and P1 are properly mated with J15 and J13 on the RF board There will be some length of pin exposed on each connector so that the K60XV PC board height matches the height of the nylon standoff Three slug tuned inductors on the K2 RF board should appear approximately centered in the associated holes on the K60XV board A The three slug tuned inductor holes are provided so you can access all of the K2 s band pass filter alignment points without removing the K60XV However it should normally not be necessary to adjust these inductors during K60XV alignment LI Secure the K60XV module to the nylon standoff using a 4 40 x 1 4 6 mm screw and one 4 split lock washer Do not overtighten the screw which could strip the threads in the standoff L Re install the bottom cover O Verify that your K2 firmware is at revision 2 04P or later by holding any key during power on If not you must upgrade it before you can complete K60XV alignment and test Refer to the instructions supplied with the firmware U Ifyou have a KAT2 internal ATU and its firmware has not already been upgraded to 1 07 or later you may want to upgrade it now The KAT2 may be usable on 60 meters with an older revision of firmware but it will not cover a very wide impedance range L Ifyou have a KPA100 100 watt stage and
11. on the lower rear panel heatsink Both installations are covered below 1 If you ll be using the original XVTR IN OUT connectors on the top cover BNC L Remove any masking tape from the BNC holes in the top cover If the inside surface is painted scrape or sand away sufficient paint for the connectors to make good contact 0 Install BNC connectors in the XVTR IN and OUT holes including the supplied solder lugs CL Cut two 4 10 cm lengths of RG174 coax cable L At each end of the coax cables remove 1 2 13 mm of the plastic jacket Separate the braid from the center conductor using a small pointed tool Cut away about half the strands then twist together and tin the remaining strands Also twist and tin the strands of the center conductor L Solder one end of a coax cable to the OUT jack center conductor to the center pin and shield to the solder lug Solder one end of the other coax cable to the IN jack L Solder the free ends of the two coax cables to the pads of J1 on the top side of the K60XV board _ OUT center pin to J1 pin 1 shield to JI pin2 __ IN center pin to J1 pin 4 shield to J1 pin 3 L Make sure that the coax cable shield wires are not touching any component leads If you ll be using phono jacks on the lower rear panel heatsink L Remove any masking tape from the phono jack holes in the heatsink If the inside surface is painted scrape or sand away sufficient paint for the connectors to make good contact
12. you plan to use it on 60 meters it must be upgraded as noted on page 2 of this manual If you choose not to upgrade it at this time be sure not to attempt to transmit in high power mode on 60 meters This completes K60XV installation Note Do not install the top cover or KPA100 module at this time 12 Alignment and Test Initial Test LL Turn on the K2 If you see INFO 080 or the receiver is muted refer to Troubleshooting L Enter the K2 menu by tapping MENU Tap DISPLAY to switch to the secondary menu you ll see SEC on the display Then locate the D19 menu entry using BAND BAND or the VFO knob L Edit the D19 menu entry by holding S gt Jhy Use BAND or BAND to set D19 to Y meaning yes D19 and D20 are installed Exit the menu by tapping MEN U twice L Use BAND and BAND to switch to the 60 meter band which should appear between 80 and 40 meters If a band does not appear between 80 and 40 meters see Troubleshooting L Due to recent firmware changes the frequency of this band may initially be set to something other than the 5 MHz range If so use direct frequency entry to enter a frequency of 5000 kHz for VFO A To do direct frequency entry hold BAND and BAND together until you see on the LCD then enter 5 0 0 0 using the numeric keys on the right side of the front panel Then copy VFO A to VFO B by tapping
13. 0 and ADR to TRN1 L Tap DISPLAY once more to get to the OUT power output field As you rotate the VFO knob you ll find that this field has two consecutive ranges L0 01 L1 27 and H0 1 H12 7 TheL settings select the low power I F output XVTR jacks and set the maximum power level in milliwatts The H settings select the normal high power path and set the maximum power level in watts For now set OUT toL1 00 1 0 milliwatts low power output enabled Then tap MENU twice to exit the menu L Change bands to the first band above 10 meters TRN1 which you assigned to 6 meters 50 MHz The display may be incorrect initially due to recent firmware changes If so you ll need to use direct frequency entry one time to correct the display To do direct frequency entry hold BAND and BAND together until you see on the LCD then enter 5 0 0 0 0 using the numeric keys LL Copy VFO A to VFO B by tapping A B L Ifyou have a signal generator capable of operation in the 28 MHz band set it to a low level 80 to 100 dBm and connect it to the XVTR IN jack If you only have a higher power signal source couple it loosely to the XVTR IN jack using a length of wire or use an attenuator L The K2 frequency display is now set up such that a 28000 00 kHz signal at the XVTR IN jack should be properly tuned in at 50000 00 MHz indicated Verify this using your signal generator
14. 00010 Z1 Ceramic resonator 4 MHz 0 2 tolerance 1 E660001 continued on next page Ref Description Qty Part No HDWR Lock washer 1 4 ID internal tooth 4 E700091 HDWR Lock washer 4 split lock 1 spare 2 E700004 HDWR Screw 1 4 panhead 1 E700005 HDWR Standoff 9 16 long 3 16 dia nylon 1 E700090 MISC Thermal pad set for K2 PA transistors 1 E850135 MISC Socket 18 pins 1 E620031 MISC Coax cable RG174 2 ft E760010 MISC Hookup wire 24 black stranded 6 in E760016 MISC Hookup wire 24 green solid 6 in E760008 MISC Heat shrink tubing 3 16 3 in E980028 MISC PC board K60XV 1 E100193 Assembly A A fine point temperature controlled soldering iron 700 800 degrees F is required to assemble this kit A non temperature controlled iron or one with a wide tip may damage components pads or traces Use a minimum amount of solder to avoid ground shorts A Most components will be installed on the bottom side of the K60XV board which is also the side labeled with K60XV ELECRAFT and the board revision The only components on the top side are the resistors diodes and connectors J1 and J2 CL Install each of the resistors listed below on the top side of the board Check the color codes carefully for example don t confuse 470 ohms with 470 k __ R1 100 ohms brown black brown __R9and__ R1O 10 k brown black orange __R8and__ R7 470 ohms yellow violet bro
15. 01 D1 5082 3081 K60XV 60m XVTR 10 Byw Burdick Rev E Swartz Date 3 8 04
16. 0W transmit strip and AC shunting the transverter RF path to ground If the operator switches to a transverter band configured for low level I O K2 is set This AC grounds the input to the 10W PA strip K2A and routes the BPF output signal to the XVTR TX and RX PIN diodes D2 and D1 respectively At the same time the MCU U1 grounds the LP signal U1 3 is an open drain output allowing D1 or D2 to be forward biased In RX mode 8R is high forward biasing D1 in this case switch Q1 2N3906 is open and D2 s anode is held at 0 V by R10 near the bottom of the sheet In TX mode 8R is near 0 V turning on Q1 and placing 6V on the 6T line This turns on D2 while D1 is now reverse biased Also in TX mode Q3 2N7000 turns on The drain of Q3 is routed to pin 2 of J2 The low going TX signal at pin 2 of J2 could be used with non Elecraft transverters to do transmit keying Elecraft XV Series transverters have a connection to the 8R line for keying purposes The logic level outputs on J2 represent the binary value of the ADR parameter in the TRNx menu entries These signals could with proper buffering and RF bypassing be used to turn transverters on or off XV Series transverters obtain their physical address via the AuxBus so these connections are not needed Elecraft wwweelecraft ccom 831 662 8345 K60XV Schematic
17. ELECRAFT K60XV 60 M AND TRANSVERTER ADAPTER Assembly and Operating Instructions Revision A March 15 2004 Copyright 2004 Elecraft All Rights Reserved Introduction The K60XV adds 60 meter ham band coverage to the K2 and K2 100 transceivers In addition it provides a low level 0 dBm split path interface for use with transverters such as the Elecraft XV Series 60 Meters 60 meters is an interesting alternative to 40 and 80 meters It s a useful band for field and emergency communications and has been adopted by the HF Pack group for nighttime calling But the band has an equally interesting set of limitations In the U S USB only five fixed channels and maximum power equivalent to 50 watts into a dipole Revision 2 04 K2 firmware allows the operator to quickly hop among the five fixed channels as well as do channel based scanning The KPA100 option can be also used on 60 meters but units shipped prior to March 2004 will require modification see page 2 Transverter Interface The transverter interface allows the K2 to be used with VHF UHF microwave transverters that require separate receive and transmit connectors Such transverters generally require a low level I F signal The K60XV s low level output is nominally 0 dBm 1 milliwatt adjustable using the K2 s POWER control More importantly the K60XV provides full closed loop ALC that works in both SSB and CW modes Control outputs are provided for use with third party tran
18. PA100 includes recent changes required for operation on this band as described on page 2 If the low level XVTR OUT signal is too low in amplitude lt 1 milliwatt into 50 ohms Re peak the band pass filter for the I F band in use Also check D1 and D2 on the K60XV board as well as other components in the low power path for correct value and proper orientation If the bargraph or LCD power display do not read properly during low power transverter use Check the installation of the coax cable on the bottom of the RF board as well as D1 D2 and all transverter ALC detector components on the K60XV PCB Avoid using POWER settings under 0 1 mW If the K60XV module has been removed and the K2 does not receive or transmit on 40 meters or on all bands Having removed the K60XV you must reconnect the RF path on the K2 RF board 1 insert a 4 7 pF capacitor into pins 1 and 3 of J15 2 insert a jumper between pins 3 and 5 of J13 Leave D19 D20 and the other added components in place and leave the D19 menu entry set to Y The 60 meter band and low power transverter I O will no longer be available but the K2 should otherwise function normally If SSB power control malfunctions with transverters KSB2 revision 1 07 or later firmware is required 18 Circuit Details Refer to the schematic on the next page The K60XV has two distinct functions 60 meter band pass filtering and low level transverter interface Both are under control of microco
19. changes must be in place C71 120 pF R29 D19 and D20 installed U S 60 meter frequencies The 60 meter U S amateur allocation provides five fixed frequency USB only channels with a width of 2 8 kHz The FCC specifies the frequencies as having channel centers of 5332 5348 5368 5373 and 5405 kHz Since the only allowed operating mode is USB this corresponds to ham transceiver VFO frequencies of 5330 5 5346 5 5366 5 5371 5 and 5403 5 kHz The K2 can be set up to channel hop among these frequencies as explained on the next page Note 5403 5 kHz is available in both the U S and U K 5371 5 kHz is used by the HF Pack group http groups yahoo com group hfpack U S power limit The maximum power output on 60 meters is the amount that with a given antenna would be equivalent to 50 W into a dipole The ARRL and other sources provide additional guidelines ATU Use on 60 Meters KAT2 KAT100 If your regulations allow brief CW transmission on 60 meters you ll be able to use our KAT2 or KAT100 ATUs on this band you ll need KAT2 firmware revision 1 07 or KAT100 revision 1 05 Both tuners will match nearly any antenna on this band can function with as little as 0 5 watts and save their matching parameters in nonvolatile memory for instant recall on band change Since 60 meters is a relatively narrow band you will in most cases only need to tune a given antenna up once near the middle of your allocation Resonant antennas and ge
20. cket at one end and 1 2 13 mm at the other Separate the braid from the center conductor at each end using a small pointed tool Then unweave the strands Be sure to remove all broken strands which might cause shorts O At the long 7 8 22 mm end cut away about half the strands then twist together and tin those that remain Trim the prepared length of braid back to about 3 8 9 mm long L At the short end cut off all the strands Cover the exposed braid with 1 2 13 mm of heat shrink tubing Shrink the tubing using a high temperature heat gun or a match keep flame 1 away from tubing L Strip off 1 8 3 mm of insulation from the center conductor at each end Twist and tin the strands LJ Place the coax cable as shown in the drawing below The end with the longer center conductor will terminate near 8 pin connector J13 which was installed earlier on the top side of the board L At the J13 end solder the braid to the indicated pad of L4 ground L Solder the center conductor into the hole just left of J13 pin 6 labeled X on the board or if your K2 s n is 2999 or lower to pin 6 of J13 itself Count the pins of J13 carefully The round pad is pin 1 L At the other end solder the center conductor to the RE pad on the board or for K2 s n 2999 and lower to the pad of R66 that s closest to the front panel Remove the KNB2 module to locate R66 L To keep the coax cable in place use a short length of the green insulated s
21. d your main microcontroller revision on the left e g 2 03D and the IOC revision e g 1 07 If either is not current you must obtain an update from Elecraft order FWK2MCIO This new firmware is included free of charge with the purchase of the K60XV kit on request L KAT2 and KAT100 ATUs For 60 meter use the KAT2 requires revision 1 07 or later order FWKAT2 The KAT100 requires revision 1 05 or later FWKAT100 To determine your KAT2 or KAT100 firmware revision use the K2 s ATU menu entry Note In the U S CW operation is not allowed on 60 m at present Technically this means you can t use an ATU see page 15 LL KSB2 SSB Adapter Revision 1 07 or later FWSSB is required if you plan to use SSB modes with low power transverter I O To determine the revision set the SSBA menu entry to BAL exit the menu the hold MJA Be sure to return SSBA to its original value after checking the firmware revision Hardware Requirements CL K2 Rear Panel Starting with K2 serial number 4088 two holes for phono RCA jacks were added to the K2 s lower rear panel heat sink near the transverter I O connector J13 on the K2 RF board Jacks of this type are often used for transverter I F connections and have satisfactory characteristics at 28 MHz They provide a more convenient connection point for transverters than the BNC jacks provided in the original K2 top cover and can be used even with a KPA100 installed You can order the new rear pan
22. dule and examine U1 closely for bent pins or pins not inserted into the socket Make sure U1 is not plugged in backwards and that you have the correct values of R1 and C12 installed Also examine Z1 for possible heat damage If signals on 40 and 60 meters can be heard but are distorted or can t be tuned in using the VFO Verify that C71 on the RF board has been replaced with a 120 pF capacitor Also check for correct values and proper installation of R29 D19 and D20 on the bottom of the board if your K2 s n is 2999 or lower If L30 on the K2 RF board cannot be adjusted so that the VCO voltage is in the 1 5 7 5 VDC range on all HF bands Use the troubleshooting information given in the previous item C71 D19 D20 etc If you can hear signals on all bands except 40 and 60 meters You may have the K60XV module plugged in incorrectly at J15 3 pin connector Also look for shorts around P2 or K1 on the K60XV If the K60XV cannot reach 10 watts on 40 or 60 meters KPA100 bypassed or not installed The 40 m band pass filter inductors or 60 meter trim caps may not be aligned correctly or you could have an incorrect value capacitor at C2 C6 on the K60XV board If the KPA100 draws excessive current when used on 60 meters Make sure you have not accidentally selected the KPA100 s unmodified 80 meter low pass filter for use on 60 meters see the D19 menu discussion at the end of the paragraph Using the KPA100 on 60 meters Also verify that your K
23. eady be installed on the bottom Install the two varactor diodes __ D19 __ D20 Skip the next two steps Q if your K2 serial number is 2999 or lower revision A or XC RF board D19 D20 and R29 must be soldered on the bottom of the board as shown in the left hand illustration below Solder the indicated leads of the two varactor diodes to the pads of C71 which is on the top side Solder the cathode leads together then to one lead of R29 Solder the other lead of R29 to the indicated pad of R32 which is on the top Position all three components close to the bottom of the PC board and make sure their leads don t contact any adjacent pads or traces The installed height must be no more than 3 16 5 mm L The revision A or XC board must be modified in the area of 8 pin connector J13 on the bottom of the board First cut the two traces that connect to pin 6 of J13 as indicated by the two X marks in the right hand illustration below this is best done using the tip of an X acto knife or a very small sharp flat blade screwdriver Next cut a 2 5 6 5 cm length of green solid conductor hookup wire Remove 1 8 3 mm of insulation from each end Solder this jumper to the indicated pads C104 RFEC2 x x R44 R4 R43 wf D19 R48 C27 RFC5 L Turn the K2 upside down if it isn t already with the front panel facing forward QC Cut a 7 5 19 cm length of RG174 coax cable Remove 7 8 22 mm of the plastic ja
24. el order E100075SS or use the top cover connectors NOTE The rear panel is removed during K60XV installation so you must obtain the new panel before you start K60XV kit assembly L KPA100 K2 100 s 100 watt stage The KPA100 cannot be used on 60 m unless it includes 1 the circuit updates made recently to improve high SWR handling 2 the newer version of the KPA100 shield which includes grounding clips If your KPA100 manual is revision C or later both sets of changes are already in place Another way to tell if your unit has the circuit changes is to look at toroid L18 on the KPA100 it was recently replaced by a jumper The SWR related update kit is order KPA100MODKT The shield upgrade is order KPA100SHLDKT Once these changes are in place you can use the KPA100 on 60 meters and can optionally upgrade to KPA100 firmware revision 1 09 This revision allows up to a 2 1 SWR before reducing power Use the K2 s PA menu entry to check your present KPA100 revision A CAUTION Some components in this kit can be damaged by static discharge Before handling put on an anti static wrist strap or touch a grounded surface Parts Inventory 0 The table below lists all parts in the kit Parts prefixed with RF are for use on the K2 RF board Photographs of similar items can be found in the K2 Owner s Manual All resistors are 5 1 4 watt
25. eplacement thermal pads are supplied for the PA transistors Q7 and Q8 Use these replacements if the original pads appear to be damaged in any way See Figure 6 32 in the K2 Owner s manual 0 Turn the K2 up on its left side with the front panel facing forward L Re install the heatsink panel as follows also referring to Figures 6 33 and 6 34 of the K2 Owner s manual if necessary 1 carefully remove the two nuts holding the PA transistor hardware together don t let the hardware fall out 2 push the PA screws back into the cabinet from the bottom side just enough to allow installation of the heatsink 3 install the heatsink fig 6 33 4 install the two nuts and lock washers that retain the PA transistors do not overtighten 5 install six screws starting with the two between the PA transistors fig 6 34 6 install the hardware retaining the antenna and key jacks 7 if you have a K160RX module plug it into J14 on the K2 RF board The K2 can now be returned to a horizontal orientation LJ Using an ohmmeter on its lowest scale measure the resistance to ground from the collectors of Q7 and Q8 If there s a short lt 10 ohms remove the heat sink and investigate the cause The most likely reason for a short is mis alignment of a shoulder washer or thermal pad 10 Transverter Connector Installation You can use either the original top cover XVTR IN OUT holes not applicable if you have a KPA100 installed or phono jacks
26. he bottom side of the board and the top side is labeled J15 at that same location with pads for a 3 pin connector On earlier K2 RF boards C6 is on the top side and there s no J15 label L Remove C6 being very careful not to damage its pads or traces Completely remove residual solder from the holes using solder wick L Locate the 3 pin female connector supplied with the K60XV kit identified as RF J15 in the parts list If your K2 does not have the J15 label at the position of C6 pull out the center pin of the 3 pin connector using long nose pliers Using just the two outer pins will have no impact on performance LJ Install the 3 pin connector on the top side of the board at the location for C6 J15 Solder one pin first Once you re sure the connector is flat against the board and not tilted solder the remaining one or two pins L Locate the 8 pin female connector identified as RF J13 in the parts list Install this connector at J13 on the RF board Use the same technique you used in the previous step L On the top side of the RF board in the synthesizer area locate C71 82 pF C71 is near relays K13 and K14 Desolder and remove C71 L Install a 120 pF capacitor at C71 121 identified in the K60XV parts list as RF C71 L If your K2 serial number is 3000 or higher revision B or later RF board you ll find locations in this area of the board for varactor diodes D19 and D20 on the top side MV209 and R29 should alr
27. in and press down on all of P1 s pins until the connector drops into place Once the connector is seated correctly and is not tilted solder the remaining pins L At this point only the locations for J1 and J2 should be empty Use of these connectors is explained in later steps L Doa complete visual inspection of the PC board on both sides using a magnifying glass Look for ___ solder bridges __ unsoldered pins __ cold solder joints __ backwards diodes or ICs This completes K60XV PCB assembly A Installation of the K60XV module may require 1 to 2 hours or more to complete Before proceeding you should already have installed and tested new K2 firmware if applicable you ll need 2 04P or later Also if your K2 serial number is 4087 or lower and you plan to install a replacement heatsink rear panel with phono connector holes you should have this panel available before you start Otherwise you will not be able to complete the installation Alternatively you can use the K2 top cover XVTR IN OUT holes or drill two phono connector holes in your existing heatsink panel Both options are covered in these instructions Installation L Remove the K2 s top cover or KPA100 module unplugging all internal cables L Remove the bottom cover panel the panel with the tilt stand A The lower rear panel heat sink must be removed in order to install K60XV module connectors Follow the procedure below carefully so that none of the hardware wil
28. l be lost or reinstalled incorrectly L Remove the heat sink panel as follows 1 remove six screws 2 remove the hardware retaining the antenna and key jacks 3 if you have a 160 m module K160RX unplug it 4 tilt the K2 up on its left side with the front panel facing forward 5 remove the two nuts and lock washers holding the heatsink to the PA transistors but do not remove the PA screws 6 push the PA screws back into the cabinet just enough to allow removal of the heatsink panel but do not allow the screws to fall out 7 remove the heatsink panel 8 push the PA screws back down from the top side of the RF board 9 install the two nuts removed earlier onto the PA screws hand tight to hold all PA hardware in place as you complete the remaining installation steps K2 RF Board Preparation L Remove the nut but not the screw or lock washer holding driver transistor Q6 in place Thread the supplied 9 16 long 14 mm nylon standoff onto the screw from the top side of the RF board in place of the original nut The screw should be installed from the bottom Do not overtighten as this might strip the threads of the standoff L Desolder and remove jumper W6 which is near J13 on the RF board J13 is close to the rear panel and slug tuned inductor L2 L Locate capacitor C6 on the K2 RF board It can be found near the striped end of the 40 meter band pass filter relay K1 On revision B or later K2 RF boards C6 is on t
29. ntroller U1 which receives configuration commands from the K2 via the AuxBus U1 drives latching relays K1 and K2 provides transverter control outputs keying address selection that can be used with non Elecraft transverters and enables the transverter low level I O path when it s selected by setting LP to OV and 6LP to 6 volts see discussion below Relay K1 and associated components re resonate the 40 m BPF on 60 meters P2 provides the interface to the 40 meter filter on the RF board The XVTR ALC circuitry acts as a compensated linear power detector It converts a 0 dBm 1 mW transverter output level to about 3 6 VDC This means the bargraph will be full scale at 1 0 mW with 0 1 mW increments Rev 2 04 K2 firmware also properly displays power in the LP case from 0 01 to 1 27 mW e g P1 20 LP When 6LP is low i e when the low level split path interface is not in use buffer Q2 2N2222 looks like a high impedance to VRFDET But when the LP interface is in use 6LP is high powering U2 and Q2 acts as a buffer for U2 s output allowing it to easily override the combined impedance of the K2 s standard power metering circuit and a KAT2 or other ATU if present When the split path is in use K2 firmware turns off the VRFDET signal buffers on the KAT100 and or KPA100 if present The circuit at upper right provides XVTR T R control and signal routing Normally relay K2 is reset looping the BPF signal back to TX IN the input to the K2 s 1
30. olid conductor hookup wire as a retainer Solder the wire in the position shown using only the two indicated pads These two pads are already connected together on the top side of the RF board Do not use any other pads 104 80m C195 A RFC2 7 i q Natox Ground to L4 her C204 8 oF Ex S RFC i g RFC6 B E c T q C224 N 56208 D 9 q C207 J 9 amp R 3 Q R43 zZ D R50 Q a C216 e R48 T R RFC9 E R47 2 3 RFCS 5 Q8 RFC4C119 p 2 R65 B N q N 3 I a Clip braid Aye x G 2 N D o m 914 y C161 l rf Heatsink Lower Rear Panel Preparation 0 Ifyou wish to modify your existing heatsink panel for use with phono connectors do so now using the drilling template below Position the holes exactly as shown to ensure that the connectors do not interfere with the K60XV module or parts on the RF board Use a small pilot bit before drilling the final holes You ll may need to move the K2 s serial number label to the right If it becomes damaged when you remove it you can obtain a replacement from Elecraft XVTR IN OUT 0 55 1 40 cm RX z i ANT 0 28 Fe et A pea A PCC a ee E E eee 0 52 3 02 e 1 32 cm CaN L Ifyou plan to substitute a new heat sink move the 160 m module and RX ANT jack if applicable two rubber feet and serial number label from the old panel to the new one If the serial number label becomes damaged when you remove it you can obtain a replacement from Elecraft L R
31. se The K2 acts as a high performance I F transceiver for nearly any type of transverter and is especially flexible with the K60XV installed The K2 s TRNX menu entries allow you to specify the RF band to be displayed your choice of five I F bands and per band settings for frequency correction transverter selection and power output level If you have never used transverters with the K2 before you should familiarize yourself with the transverter band setup information in the K2 Owner s Manual in the Secondary Menu Functions section If you re using Elecraft X V series transverters please also review their manuals for instructions regarding K2 related connections and configuration Some information in this manual may supercede that in the XV series manual Transverter bands and frequencies You can define up to 6 transverter band displays Once enabled they will appear above 10 meters in the band rotation To set them up use the TRN1 TRN3 secondary menu entries TRN 4 TRN6 use the same three entries but are accessed by tapping ANT1 2 Each TRNx menu entry has a number of fields accessed by tapping DISPLAY The RF field can be set from 0 through 999 For bands over 999 MHz enter only the low order MHz digits e g for 1296 MHz use 296 The IF field can be set to 7 10 14 21 or 28 MHz The OFS field can be used to specify an oscillator multiplier chain correction of up to 9 99 kHz See below for details on other fields
32. sed due to bends in the leads or epoxy coating This will not affect performance __ C6 4 7 pF alt 5 pF __ C5 2 2 pF alt 2 pF _ C3 and __ C4 47 pF 47 or 470 _ClOand C12 001 F 102 C7 _ C8 _ C9 _ C11 _ C13 __ C14 C15 and __ C16 01 uF 103 O Install ceramic resonator Z1 which looks like a capacitor with three leads L Install the socket for U1 18 pins Orient the notched end of the socket with the notched end of the PCB outline for U1 To ensure that the socket is seated flush against the PCB solder just two pins then turn the board over and examine the socket closely If it isn t flat re heat each pin and press down on the socket it should drop into place Then solder the remaining pins L Use a discarded component lead to form a U shaped jumper and install it on the top side of the board at the location near J1 marked with a ground symbol The installed height of the jumper should be no more than 1 8 3 mm A Before handling transistors or ICs in the following steps put on an anti static wrist strap or touch a grounded surface L Install transistor Q1 2N3906 orienting the flat side as indicated by its PC board outline The transistor must be seated close to the board with no more than about 1 8 3 mm of lead length exposed O Install Q2 PN2222A and Q3 2N7000 in the same manner as Q1 L Carefully straighten the leads of the 8 pin integrated circuit U2 LM358 using the me
33. sverters including an open drain keyline and three band select logic outputs neither are required for use with Elecraft s XV Series transverters Revision 2 04 K2 firmware provides a number of transverter related enhancements including up to six transverter bands 0 1 mW increments on the bar graph 0 01 mW units on the LCD in TUNE mode and user programmable transverter addressing to allow more than one band display to be used with each transverter With the K60XV installed each transverter band display can be individually programmed to use the low power split path interface or the K2 s normal high power output Specifications 60 meter coverage Approx 5 0 to 5 5 MHz see text for permitted transmit frequencies Transverter T R control PIN diode switching Transverter output Low level approx 0 1 1 0 mW 10 to 0 dBm linearized RF ALC detector Current drain Typically 1 to 2 mA in receive mode 2 to 15 mA transmit PCB size 2 0 x 2 6 5 1 x 6 6 cm A Your K2 and some of its options will not function correctly with the K60XV unless they meet the requirements listed here Please read all items carefully Firmware Requirements UL K2 Revision 2 04P or later main microcontroller firmware is required U6 Control board and revision 1 09 or later I O Controller firmware U1 RF board Serial number 4060 and higher K2s already have these revisions To check the revision hold any switch while turning the K2 on Two numbers will be displaye
34. t Channel Hopping and Scanning Applies to HF and Transverter Bands Channel hopping if enabled allows you to use the VFO knob to quickly hop among just those frequency memories which fall into the present ham band You can turn this mode on or off on a per band basis default is off Channel scanning among these same memories can also be enabled on a per band basis It will work in either the original K2 scan mode receiver muted or in live scan mode where the receiver is not muted and scanning doesn t stop until you touch any switch To use these features l memory 9 to see if it is set up for 5000 kHz one of the original defaults If it is and you plan to use channel scanning on 60 meters you should store a different frequency in this memory on a different band Otherwise you may hear WWV at 5 MHz during 60 meter channel scanning 2 Set up and two or more frequency memories within the target band using VFO A Frequent users of 60 meters in the U S should set up memories 1 through 5 as USB on the allocated channels 5330 5 5346 5 5366 5 5371 5 and 5403 5 kHz Note 10 frequency memories are available in the K2 so using five of them on 60 meters will leave just five for other purposes You can use fewer than five on 60 meters if desired 3 Choose one of the stored memories as an initializer to be used when starting channel scan on this band and it For 60 meter users this would typically
35. thod shown in Figure 4 9 of the K2 owner s manual LJ Install U2 The notched or dimpled end of the IC must be oriented toward the notched end of its component outline LJ Straighten the pins of U1 PICI16C621A LJ Install U1 in its socket with the notched or dimpled end of the IC oriented toward the notched end of the socket and the U1 label on the PC board LL Examine Ul s pins carefully looked for bent pins or pins that are not inserted into the socket p y p p A In the following steps do not trim the pins of P1 or P2 on the top side of the board L Install 3 pin male connector P2 on the bottom of the PC board in the position indicated by its component outline Do not solder yet The drawing below shows how P2 should appear viewed from the front edge of the board with the top side facing up Top Side Lu Ee Geb P2 P1 O Solder just one pin of P2 but not the center pin which is harder to re heat due to the ground plane Verify that P2 is not tilted and is seated completely flat If not re heat the soldered pin and press down on all of P2 s pins until the connector drops into place Once the connector is seated correctly and is not tilted solder the other two pins O Install 8 pin male connector P1 An end view of P1 is shown in the drawing above Solder just one pin of P1 near the middle of the connector Verify that P1 is now perpendicular to the PC board and is seated completely flat If not re heat the soldered p
36. tting by without an ATU CW operation is not permitted on 60 meters in the U S This presents a problem for automatic antenna tuners which require either a carrier or a sustained voice signal such as a whistle in order to do antenna matching In SSB mode a whistle is essentially a carrier To get around this you could put up a resonant antenna or use a manual tuner in conjunction with an antenna analyzer If an ATU will still be left in line you can either set it for bypass mode or pre tune it into a dummy load on 60 meters The KAT2 and KAT100 use the carrier method which is faster and more reliable than whistling Whistling may also be frowned upon by some users of the band 15 Using the KPA100 on 60 meters The KPA100 can only be used on 60 meters if it includes recent modifications see page 2 Otherwise it could be damaged Note Normally the 40 30 meter low pass filter on the KPA100 is used on 60 meters This filter rolls off aggressively above 10 15 MHz Combined with the KPA100 s excellent PA balance this results in adequate 2 harmonic rejection when the K2 100 is operated from 5300 5500 kHz However a future application note will explain how to modify the KPA100 s 80 meter low pass filter to work on 80 and 60 meters This would provide much better rolloff if needed The D19 menu entry can be used to select which KPA100 low pass filter to use When editing the D19 parameter tap DISP LAY to select PA60 80 or PA60 40 defaul
37. wn __ R3 470 k yellow violet yellow __ R4 100 k brown black yellow __RS5and__ R2 1 M brown black green __ R6 91 k white brown orange LJ Install D1 and D2 5082 3081 Use a magnifying glass to verify the part numbers since these look very similar to D3 D4 1N5711 Orient the banded end cathode of each diode as indicated by its component outline O Install D3 and D4 1N5711 LJ Install RFC1 and RFC2 15 uH brown green black on the bottom side of the board QO Place relays K1 and K2 on the board with the striped end of each relay aligned with the striped end of its outline Then use a flat object such as a book to aid in flipping the PC board over without allowing the relays to fall out Verify that the relays are seated flat against the board then solder LJ Install trimmer capacitors C1 and C2 on the bottom side aligning the flat side of each trimmer with the flat side of its component outline These trimmers will be adjusted from the top side of the board via the provided holes Make sure the trimmers are seated flat against the board then solder LJ Sort all of the remaining capacitors by value using a magnifying glass if necessary to read the values CL Install the capacitors in the order listed below In one or two cases you may have to form the leads to fit the provided pad spacing on the PC board Note Seat each capacitor as far down against the board as it will go but no farther Some lead length may remain expo
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