[R-390] Procedure for setting T401

[Raymond Cote]

Yes by all means put it back together. Tiny screws and lock rings have a way of meandering all over the shop, never to be found.


There is nothing that warms the heart so, as gazing at your dog, who is sleeping on the couch, mentioning his name, and hearing thud-thud-thud as his tail hits the cushions.

On Jul 16, 2019, at 13:38, Barry <n4buq at knology.net<mailto:n4buq at knology.net>> wrote:

Isn't there an axiom that says if an R390A is taken apart, then parts are already lost?

Thanks,
Barry - N4BUQ

----- Original Message -----
From: "dog" <agfa at hughes.net<mailto:agfa at hughes.net>>
To: r-390 at mailman.qth.net<mailto:r-390 at mailman.qth.net>
Sent: Tuesday, July 16, 2019 12:46:03 PM
Subject: [R-390] Procedure for setting T401

Since the voltage on E209 is so hot in my 390A (-30VCD), I've been
looking for a procedure to set T401. I don't seem to be able to find
anything. Any ideas? I thought maybe I'd stick a high Z probe in E209
and look at it on the spectrum analyzer and set it for the best 17MHz
signal. Don't know if there's any harmonics or glitches that are making
it so high but maybe the SA would tell me something. I haven't looked at
my other 390A, it's all apart right now, I should start putting it back
together before I start loosing parts.
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