Re: [Elecraft] How do I know if my K2 has BFOMDKT installed?

2022-07-22 Thread Dave Van Wallaghen
Hi Andrew, Yes, place that 2.7KΩ resistor across RP2 pins 7 & 8. This resistor is on the output of U6A to drive the varactor diodes in the PLL Osciillator circuit. It was changed to 2.7K in Rev B. In Rev A it was 100K and part of RP2, so you are just placing a 2.7k resistor in parallel with th

Re: [Elecraft] How do I know if my K2 has BFOMDKT installed?

2022-07-22 Thread Andrew Moore
Hi Dave - My s/n 892 currently has RP2 = 10k, not 100k. Does the 2.7k still need to be added across pins 7 and 8? From the PLL Ref Upgrade kit docs (E850138), it sounds like it might need to be added regardless of 10k/100k, as the first step below doesn't differentiate, while the next step does:

Re: [Elecraft] How do I know if my K2 has BFOMDKT installed?

2022-07-22 Thread Dave Van Wallaghen
Correct Andrew. Even if it is a 10K RP you'll still want to add R19. I just got done fully upgrading a field test K2 here and had 100K stuck in my head. But it is the same whether 100K or 10K RP's. 73, Dave, W8FGU On 7/22/2022 10:52:06 AM, "Andrew Moore" wrote: Hi Dave - My s/n 892 curre