Re: #bitx40 Q8/Q9 dead - no TX or RX #bitx40


Evan Hand
 

Ryan,

The only way that I can see a 0 voltage on the base of Q9 is if the DDS1 signal is shorted to ground.  You said that the 5v regulator for the Arduino bumped something.  Maybe the DDS source is not working.

I would remove the DDS1 connection and check Q8 and Q9 voltages again.  If there is now bias, then the DDS1 signal is the problem.

73
Evan
AC9TU

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