11-04-2007, 07:59 AM
Recapped the 38-7 last night and everything is working fine with one exception. On the shortwave band near the top of the range there is a spot on the dial where it sounds like tapping on the cabinet etc. is getting picked up and amplified. Also at the very top of the shortwave band there is some sort of feedback. Didn't align the set as of yet but wondered what may cause this. I've heard about a microphonic problem with tubes, but since this is only on one spot of the dial could that be it? Thanks in advance.
