[SignalOne] Re: CX-7 Driver Board

[W2AGN]

Well, worked on the CX-7A again today, checking bias, etc. All seemed OK. 
I had replaced the FET (Q1) on the driver board some time ago, with a 
3N201, which one of the Newsletters said was a good replacement. Out of 
desperation, I popped in an MPF-102 I had, not expecting it to work.

Bingo! I got drive! In fact, a lot of drive. I backed down R-19 to about 
halfway. Checked the signal though, and it's "good" RF, not oscillating. 

I set up the final bias, and the "0" volt on collector of Q5. Seems all 
is well. 

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+-++-++-++-++-+   John L. Sielke
|W||2||A||G||N|        http://www.w2agn.net [UPDATED]
+-++-++-++-++-+    Ex-K3HLU,TF2WKT,W7JEF,W4MPC,N4JS