[Elecraft] K2 Receiver dead

[W3FPR]

Mike,

Since you have 2 K2s there, you can inject the same level signal into 
each one while taking 'scope or RF Probe readings on each.

It is rare to have low BFO output or a bad NE612.  I would suggest you 
look carefully at the IF amplifier instead.

73,
Don W3FPR

On 12/26/2025 11:02 AM, Mike Furrey wrote:
> Hi all,
>
> I have finally had a chance to help out with my friends K2. Using both 
> the RF signal generator and an AF generator, signals do get through on 
> all bands but is very weakly. Even with the signal generator on the IF 
> frequency, the signal is very weak, even at the input to the detector. 
> We injected an AF signal at the output of the detector and it is very 
> robust ... great audio and volume.
>
> What I have noticed ... The maximum strength on the S meter (still 
> low) occurs when the signal is zero beat, weather a signal is injected 
> at the antenna or an IF signal is injected at the input to the 
> detector, the NE612. I am currently suspecting a bad BFO output or an 
> alignment somewhere. That is currently where we stand. Any suggestions 
> before we start again in the New Year? Thanks.
>
>