|[AMRadio] 117Z6GT question|
k4xm at arczip.com
Thu May 26 13:44:29 EDT 2005
This is normal. The cold resistance is always much less than normal. In a
transmitting tube it is called in-rush. For the larger tubes some sort of
protection is usually used, or at least a filament transformer no larger
than necessary. The tube you are using has a 117 volt filament. 73 Mike
----- Original Message -----
From: "gwt" <gwt at mpinet.com>
To: "AM Radio List" <amradio at mailman.qth.net>
Sent: Thursday, May 26, 2005 1:10 PM
Subject: [AMRadio] 117Z6GT question
> I have a question for the list.
> I'm repairing an old am radio that uses at 117Z6GT as a rectifier. I
> have the radio working again, but I notice when I turn it on that the
> 117Z6 filaments glow really bright for a couple of seconds. Then settle
> down to what you would expect to see, a red glow.
> I don't have any experience with this tube, or how it should act at turn
> It what I'm seeing a normal condition?
> George KE4HJ
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