[Elecraft] K2 BFO problem
snowy howell
snowy.howell at btinternet.com
Sun Dec 19 17:36:42 EST 2021
Good Evening Don
Sorry for the late reply, not used to the format of the reflector and stumbled onto your suggestions to solve my BFO problem.
I am please to say that I have now got it working correctly.
Getting nowhere with the test I decided to dismantle the radio down to just the RF board, removed a surplus of solder from the D36/37 area, re-flowed the pins of U10, lifted the leg of the 5.1meg resistor and L33, didn’t know about the rubber bung being conductive however once again removed a surplus of solder from that area, I also added a small cut of insulation tape to form a bed for the resistor on L33, thinking that turns may be shorted, at this point I ought to explain I purchased this as a built but non worker, it is an early radio as it has a Rev A mother-board with a small pot for R60 and an early control board with the 12v switch rather than the berg connectors, I have built 5 or 6 of these for people and never had a problem certainly not as many faults as this one appears to have had, there is no serial number on the radio, but it has had the PLL thermistor conversion as well as the D36 done.
Have to thank Dave for sticking with me on this one, without his guidance I would still be trying to sort the PLL problem.
Have a good Christmas and New Year 2022
73
Snowy G0HZE
Sent from Mail for Windows
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