05-04-2014, 11:13 PM
Try aligning it to the DC voltage on the AVC line. Using my cheap Radio Shack voltmeter I ended up with better results than using my oscilloscope at the speaker when I aligned my 60. That was my first attempt at using the AVC voltage for alignment, and it worked really well. Just be sure you are in DC mode, and be aware that the voltage should be negative. Adjust so that the voltage is as big a negative number as possible.
If you think you are way off, start by feeding audio on a 460 kHz carrier into the cap electrode of the 78 tube and adjust the trimmers for the second IF transformer. You should be able to get a reasonable amount of tone out. If that works, move the signal input to the cap electrode of the 6A7 and adjust the trimmers of the 1st IF transformer. From that point on, you can go back to Ron Ramirez's procedure.
Roger
If you think you are way off, start by feeding audio on a 460 kHz carrier into the cap electrode of the 78 tube and adjust the trimmers for the second IF transformer. You should be able to get a reasonable amount of tone out. If that works, move the signal input to the cap electrode of the 6A7 and adjust the trimmers of the 1st IF transformer. From that point on, you can go back to Ron Ramirez's procedure.
Roger
