Update:? All voltages on U1601 on the ALC board check out fine so I think the ALC board is fine.? Then I checked voltage on R2001 and R2002 on the low pass filter switch board which are the adjustments for forward and reflected wattmeter and ALC. Transmitting in CW I got voltage that varied with the carrier control on R2002 (reflected) but not any on R2001 (forward) which leads me to think that AA119 diode CR2001 is bad.? I hope my logic makes sense.
So looks like I need to replace CR2001 and CR2002 with working diodes.? Searching through my junk box I found two glass case diodes that unfortunately have no markings left.? I tested them with a 10K resistor and 13.8 volts and they showed 13.8V one way and .29 volts the other way which I'm pretty sure means they are germanium diodes.? So now I need to decide if I want to try those or order something that has a known value.? But I think (hope) I'm closing in on the ALC issue!
73, Bill NZ0T
