{Collins} Fw: Tube set up fro 572B.............





If the tube is listed on that particular tester's tube data sheet, I would assume it had adequate capability. That said, it probably is NOT a good idea to lock down the test key.

On mine, the fuse lamp glows rather brightly when testing either 811-A's or 572B's. For that matter, it is also bright for 6146's and 5U4's as well.

73, Chas


----- Original Message ----- From: "Roy Morgan" <k1lky68@xxxxxxxxx> To: "Charlie T, K3ICH" <pincon@xxxxxxxxx>; "collins" <collins@xxxxxxxxxxxxx>
Sent: Thursday, November 20, 2014 7:26 PM
Subject: Re: {Collins} Tube set up fro 572B.............



On Nov 20, 2014, at 6:11 PM, Charlie T, K3ICH <pincon@xxxxxxxxx> wrote:

I was under the impression that the 572B and the 811-A had the same filament ratings.

Yes, all data sheets I can find show 6.3 volts at 4 amps.

The concern is whether any particular tube tester can happily deliver 4 amps at 6.3 volts.

Roy

Roy Morgan
RoyMorgan@xxxxxxxxxxxx
K1LKY Since 1958





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