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Good morning Clark Et al, That Mica is a new one for me.? This is the first I've heard of one failing that way.? Will enter it in my log of can bees.? Thanks all for the interesting conversation.

I do understand it has nothing to do with your issue.? Just mentioning it could be as simple as... And again good find.

The relay has nothing to do with this problem, vfo jumping frequency. That is good to know and makes sense that The relay can cause trouble. Lots of curcuits to vfo run through that relay.. I added a

I put a heat deflector between the relay and the six AQ five problem solved. 73 Dave [email protected]> wrote:

That's good to know. The relay next to the 6aq5 will will cause instability in my SR2000 over time . Tim

Symptom....? vfo jumps freq slightly and instantly.? A light touch to vfo brings it back. This is not a slight slow change over time. Its a slight jump.? Very noticeable if using a freq counter

When you unplug the mic you remove the load from the front end of the mic amp chain. When you turn the mic gain to max all the noise in the unloaded first mic amp is fed to the second mic amp. The

Walt - I will do what you suggest.? Interesting.? But - the noise is there WITH NO AUDIO INPUT AT ALL.? Unplug the mic, key the PTT and turn up the mic gain.? Noise begins at very low mic gain

Ok I re-read your email again. You are most likely over driving the mic amps. To properly measure the noise level: 1, Inject a 5mv RMS signal into the mic input. 2, Turn the mic gain to minimum. 3,

What is the position of your MIC GAIN? Walt Cates, WD0GOF https://wd0gof.com/Hallicrafters A majority of acceptance is not proof of correctness. https://wd0gof.com/bible-study/commentaries/

No luck with rivet investigation.? I've done a couple of things that have made noticable improvement, but not solved the problem entirely.? I used this method of measurement to observe the effect of

Walt, I'll give that a try. Thanks for making the images available. Paul, W9AC From: Walt Cates <cateswa@...> Sent: Friday, May 10, 2024 6:25 PM To: HALLI IO GROUP <[email protected]>;

Simple build your one process. POWER SUPPLIES | WD0GOF<https://wd0gof.com/hallicrafters-radio/technical-discussions/power-supplies/> Then click PS-150/500 REAR PANEL BUILD Walt Cates, WD0GOF

Well done! Now I need to get motivated and have one made for my SR-400a supply. Paul, W9AC Sent: Friday, May 10, 2024 6:04 PM To: [email protected] Subject: [HallicraftersRadios] New P2000

Dave Qty 1 [email protected]> wrote:

I had the rear panel for the P2000 remade. ?I was missing one. ?This is the sample artwork on cardboard. ?I found the closest press board I could find and dropped it off today. They will print me a

Terry ONeill writes: Heh! That power supply is worth 3x the amp, to the right people :-) --lyndon ( still missing a PSU for his Loudenboomer :-( )

Nice! Kudos. [email protected]> wrote:

I posted the message below to the Kenwood-Hybrid group but thought the information may be useful here.

Hi Bill, I don't know if you got my email sent to "owner"? But I do have several pictures of my HT-45 PSU build I would like to share for the files/pictures area once I get them all together.? If