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Re: [TenTec] Hercules 444 amp

To: "k9yc@arrl.net" <k9yc@arrl.net>, Discussion of Ten-Tec Equipment <tentec@contesting.com>
Subject: Re: [TenTec] Hercules 444 amp
From: Robert <rmcgraw@blomand.net>
Reply-to: Discussion of Ten-Tec Equipment <tentec@contesting.com>
Date: Sun, 10 Aug 2014 19:04:44 -0400
List-post: <tentec@contesting.com">mailto:tentec@contesting.com>
This is a Very good way to determine the condition of a tube. 

Just be sure one knows the expected results.   If they don't match within 10% 
or so, I'd have 2nd thoughts as to using them as a pair. 

73
Bob K4TAX



Sent from my iPhone

> On Aug 10, 2014, at 6:40 PM, Jim Brown <k9yc@audiosystemsgroup.com> wrote:
> 
>> On 8/10/2014 3:27 PM, Robert wrote:
>> Please don't use used or pulls for a 2 tube amp.
> 
> I'm using both used tubes and pulls pretty successfully. It's easy to run a 
> Titan on a single tube at a fixed drive level that gives you 700W for the 
> first tube you test, note the grid current, and compare to other tubes. Takes 
> some time, but worth the difference in cost to new tubes.
> 
> 73, Jim K9YC
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