Let's make this easy. Pull the board and out it on your bench. Connect 10 volts to pin 11/38 and ground to 11/11. Make your measurements with and without the transistor on the board. Verify the pinout of your transistor against a data sheet and verify it is good with am Ohmmeter check. Where did you get your transistors? Are you confident that they are genuine? Trace the board connections to make sure the transistor is inserted correctly.
On Sat, 29 Mar 2025 20:15:04 -0300
"Jim Harris via groups.io" <radiove1rb@...> wrote:
Gary I have not had time to work on the TR7 CW issue, But I think I have it
isolated the problem to the switch transistor Q1103 as with the base
having 9.4 VDC on receive it still conducts some so instead of 10 volts
there is a bit over 5 volts but that is enough to power up the oscillator
etc. Guess I am going to have to try and put in some different transistors.
It is such a simple circuit it is hard to find the problem.
Jim VE1RB
--
73
-Jim
NU0C
Jim Shorney