Nice advice. Thanks.
73, Don M.
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] Behalf Of Donald Chester
Sent: Sunday, March 06, 2005 12:40 PM
To: amradio@mailman.qth.net
Subject: RE: [AMRadio] N3RHT Shack Update
>I have the same phenomenon with the 872's
Patrick Jankowiak wrote:
3B28's have a sort of white glow in the gas, right?
_
light purple'ish
3B28's have a sort of white glow in the gas, right?
Usually the is no immediately visible glow at all. If you carefully peer
down inside the plate/filament structure, you will see a dim violet glow.
You may have to turn off the lights to notice it.
Don k4kyv
I have the same phenomenon with the 872's or 575's (whichever happen to be
installed) in a homebrew rig. 3 light but one is dark, and the phenomenon
stays at that socket. No obvious other issues.. how curious.
Make sure the tube filament pins are making good contact. I have seen it
fail due
3B28's have a sort of white glow in the gas, right?
Merz Donald S wrote:
The 2 supplies run two 3B28 rectifiers each. 3 of them run with no visible indication at all.
You can't even see the filament. But one gets a dramatic glow under load.
I have not seen this before--is that gas in the tube?
>
I hope so - 3B28s are supposed to have gas in the
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