On Jul 18, 2006, at 7:09 AM, k7rdx wrote:
> The tubes (3-500z`s) were from RF Parts. I replaced (Henry 3K repair
> job)some low hr Eimacs that one had developed a grid to filament
> short. Gain
> was compared to a nos pair of Eimac`s.Higher zsac for a given Ep
> and close
> to 10% more output for a given value of drive.Jim..
Amperex 3-500Zs have an avg. Mu of c. 190 compared to Eimac's 130. I
measure about the same PEP output from either brand, but Amperexes
require c. 10% less drive to get there.
> ----- Original Message -----
> From: "Tom W8JI" <w8ji@w8ji.com>
> To: "k7rdx" <k7rdx@charter.net>; "Amps" <amps@contesting.com>
> Sent: Tuesday, July 18, 2006 3:14 AM
> Subject: Life and gain of 3-500Z
>
>
...
R L MEASURES, AG6K. 805-386-3734
r@somis.org
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