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Old 03-01-2011, 02:07 PM
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Mars777 Mars777 is offline
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Degrading output

Hi:

This is Tom M. from Washington state. Hint: I recently sent you my pictures of the Philco 46-1213, where I did the chassis recap using beeswax.

I recently acquired this same generator. I noticed on my scope a degenerating rf output to the point where it is zeroed out in the upper part of band D and on upwards. I did swap the 2 identical 12AT7's and still shows the same degrading effects of rf. I tested the tubes in my tester also. Both good.

Did you ever have this same symptom as well?

I haven't replaced anything yet. I will do all the paper caps & the 2 electrolytics. I am going to replace the 1n3756 with a 1n4007.

Out of curiosity. Did you end up replacing the clamp diode 1n3754? If you did, did you use a 1n4007? I am not going to touch that one until I know for sure.

One last thing. Did you ever find out what part# the varactor was?

Thanks, and keep up the great restoration work that you do!
Tom M.
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