Re: [Elecraft] PLL Problem after K2 upgrading Rev. A to B

Hello Don Many thanks for the quick response and precise directions where to look for. Yes, RP2 is 10k and after removing both10k resistors all went well with CAL PLL. I had overlooked the note about the 100k RP2. My fault! Again, your knowledge and help is great! Already thought that I have

[Elecraft] PLL Problem after K2 upgrading Rev. A to B

Hello All My K2 Rev. A worked all the years very well. But as I have the parts for upgrading to Rev. B since long, I have now finally made the modifications, except the Thermistor board installation, and run into problems with the PLL. With CAL FCTR and BAND-, the reading is in range, but

Re: [Elecraft] PLL Problem after K2 upgrading Rev. A to B

Gerald, Did you add the 10k resistors to RP2? If you did, check the value of RP2. If it is 10k (last digits = 103), then the resistors should not have been added. OTOH, if RP2 is 100k (marked 104), the 10k resistors should stay in place and you will have to look elsewhere for the problem.