?

So you have 3.7v at the base of q13 when you push ptt?

Is the emitter of q13 at about 3v?

If so, then q13 is probably working.

When you say you "see a signal passed q13", exactly what are you looking at?

From the resistor values, I'd guess the base of q14 should be at 100 * 12v/(100+1k) = 1.1 volts.

And the emitter of q14 should be a diode drop below that, at about 0.6 volts.

Is that what you see there when ptt is pressed?

The gate at q15 should be somewhere between 0 and 5v, as set by the pot at RV1.

And the drain should be around 12v with no signal present.

You can look at those without pressing ptt.

Check that the output filter is in good shape, and those coils are soldered in properly.

You might power down and check out that 100 ohm pot with an ohmmeter.

Check the output filter coils with an ohmmeter, and the connection to the antenna.

How do you know you have no output?

Maybe try something simple like a 50 ohm 2W resistor for a load at the antenna connector, see if it gets hot.

Jerry

---In BITX20@..., wrote :

Well replacing q13 seamed to work for a little bit. ?Once again no output power. ?I can see a signal passed q13 now. ?And I have 3.7 volts on q13 ?