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The oddest things happen and they always seem to only happen to me.

I of course am waiting on nomad to weigh in, but with the preamp in the on position is working as if it never stopped.

I would of course prefer to have the amp functioning 100%.

On The other hand it's working as it was when purchased 35+ years ago.

I never use amplifier preamps even on the amplifiers i own where they actually still work.

I've left the sonar and 300a on for 5 hours now and periodically held a few local qso's and even heard a station from Missouri. So I called to him and had a short qso with Haystak.

With a preamplifier that hasn't worked in who knows how many years in the on position my receive hasn't and isn't dropping out as it did while it was in the off position. I don't even want to turn it off. It might begin dropping my recive ever 20 seconds or so then I'll have to quickly key and un key the microphone in order to get it to come back up. I don't have to do that any longer.

I guess for now I will just leave it in the pre amplification position and although it tends to bring up the noise level it doesn't affect the stations that I receive in any adverse way.

As I mentioned I would like to fix it so that I can leave it in the off position without it D amplifying my received signals

But until nomad weighs in and lets me know if there is a way to either fix or better yet bypass the pre amplification stage in this Palomar 300a all together, I'm just going to use it the way it is.

It's working fine. Stranger things have happened but this is definitely in the top 5. At least for me. 73