Re: 50 Watt PA Rev. 2


George Korper
 

Ron, assuming I have pin- out correct..

Gate:13.85
Drain .05
Source: 0000

Looking at board bottom with hole in Mosfet on the top, that is reading from right to left


On Mon, Jul 13, 2020 at 11:27 AM George Korper via groups.io <georgekorper=gmail.com@groups.io> wrote:
Thank you. Will check Q3. 
BTW I have never  seen 50 watts on 20. Maybe 30+  watts at 20 volts. 
All the output functions including transformers appear to be okay. 

On Mon, Jul 13, 2020 at 10:49 AM Ronald Taylor <wa7gil@...> wrote:
Hi George. Did you check if Q3 is functioning? On receive the gate of Q3 should be high and the drain should be low. 

Ron

On Mon, Jul 13, 2020 at 7:41 AM Ralf Rosche <ralf.rosche@...> wrote:
Hi George,
output ok means 50W+ ?
If so, the transformers should be correct direction, pease check this twice. 

And there is no short with the ferrit of the torroids in case the enamel of the wire could be damaged?
Check with ohmmeter must be somewhat above some MOhms.

May be one of the pin diode is faulty, or wrong direction?
They are responsible for RX/TX switching.
Hans had a nice description of the functionality in his manual. 

Ralf
 


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