Thread: Radiola 28 (DC)
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Old 11-17-2013, 11:58 PM
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Winky Dink Winky Dink is offline
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Join Date: Apr 2010
Location: Meridian, Idaho.
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Reception Problem that I Need Help With

I've got the Radiola up and running, and the rotating antenna actually works. The signal is noticeably stronger/weaker as I turn the antenna. The problem now is that it actually receives only one station, and I can look out my window and see the antenna towers less than two miles away.

Previously, even without the antenna, I could receive the usual five or ten local stations. Now I've examined the chassis thoroughly for visible defects, redone the continuity testing, retested all the tubes, juggled tubes to put the strongest performers in key positions. To my knowledge, since the last time it was working properly, the only thing I've changed is to modify the volume rheostat to the original DC configuration pack the power supply wires into a tight cable.

So here are the symptoms: Strong reception of KTIK 1350 and a much weaker image of that signal at around 1250. Below 1250 KHz I have absolute silence--no signal, no noise.
Above 1350 I get noise--a buzz--that gets louder as the frequency increases. I have no way to guess what the frequency of the buzz is.

I've managed to resolve a lot of issues with this restoration, but I'm stumped here due to lack of knowledge and experience. Can someone please give me some direction?

Forever Grateful,
Winky.
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