Pete,

Do you have the proper voltage on Q1?  Check for 1.22 volts at the 
cathode of U2.  Also check the value of R3 and R3 with your ohmmeter.

It sounds like you have replaced everything important, but if you had 
enough RF to fry the resistors, you may have damaged the switch contacts 
at the same time.  You should be able to determine the resistance 
through the switch with your ohmmeter.  Do that for both poles, and both 
switch positions.

73,
Don W3FPR

Pete Smith wrote:
> Thanks for the idea - I removed both D1 and D2 from the circuit - no 
> improvement.  The signal is quite audible (in the 50 uv switch position, 
> and barely audible in the 1 uV position, but doesn't move an S-meter that 
> was formerly tested with it and registered S9.
>
> Anyone else?  I know that if I had a scope I could measure the p-p voltage 
> coming out of the oscillator, but I don't.
>
> 73, Pete N4ZR
>   
>
_______________________________________________
Elecraft mailing list
Post to: [email protected]
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
 http://mailman.qth.net/mailman/listinfo/elecraft    

Help: http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com

Reply via email to