Recently aquired an early Ranger (version without bias and keyer tubes). Unit was pretty well hacked up. Looked like someone tried to modify audio section and then gave up. The driver transformer was missing and numerous wires disconnected.
I solid stated the power supplies and used a Ranger modification circuit I found on the AMWindow site as a guide to get the audio section rebuilt.
http://www.amwindow.org/tech/htm/rangmod.htmI got the RF section working, but having trouble with the audio.
Can anyone tell me from the images below where I might be having problems?
The images start with an unmodulated carrier then audio gain increases up to about mid rotation of gain control.
Carrier
AM1
AM2
AM3
Looking forward to getting back on AM
Thanks,
Dave
KX9DK