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Philco 37-60: Need to Revise Tone Control Design
#9

Yes, tried several caps a 0.01, 0.04, and 0.10 uF and the last one sounded best. Then we tried a 0.22uF and the range from trble to bass was the best and we stuck with that. The pot is a 100k ohm with wiper to ground and on side to the cap wihic is connected to the plate of 6F6.

We're in the middle of alignment and the IF is done but we're hearing some motorboating. Need to finish the alignment and hear what we got.

Update: The Rf alignment is incomplete since the signal from the generator is too garbled at 600khz. We're getting motor boating from 600 khz and below. Everywhere else, the signal is fine. I'll have to check the values of each new cap we replaced to make sure we're not off someplace. Worse comes to worse, I'll have to check the micas. If I can't resolve this, I'll open another thread.

Thanks





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