Re: [Elecraft] K2 - PLL reference oscillator test

Order a replacement J310 FET from Elecraft and replace Q19 - that should provide proper operation. There was a time when Elecraft ordered a batch of J310s that turned out to be marginal in the PLL Reference Oscillator. Those have since been replaced with NOS stock which work well. In other

[Elecraft] K2 - PLL reference oscillator test

Welp, made it to page 62 of the manual for the K2 build (receiver portion). All resistances check out fine but the Frequency Counter test reads ~450kz vs 12090khz expected. Additionally, I noticed the AGC calibration has changed in the LED meter and it jumps a bit. Any ideas? Thanks -- Sent fr