It's a high impedance circuit so drop across 100 Ohms would be minimal. What I would suggest is that you check R48 for visible damage, bad solder connections, and measure it for value with your Ohmmeter.
On Fri, 18 Apr 2025 18:19:18 -0700
"Mark N2DMI via groups.io" <markkiziuk1@...> wrote:
Then re-connect the PTO signal wire back to R48 and use the O-scope to measure the voltage to where the PTO signal wire gets connected to R48 and check to see how
much of a voltage drop I get?
Well I believe I would get some kind of a voltage drop.
I think since I have also a TR-4CW is to do the same two measurements to my other rig so that I know what the voltage measurements on an O-scope should be otherwise I would not know if the 2 measurements on my TR-4CW/RIT are correct.
--
73
-Jim
NU0C
Jim Shorney