[Amps] SB221: Can you saftely mix and run an Eimac 3-500Z with and RF Parts 3-500ZG-RF ?

[rlm]

=F0  Chinese 3-500ZGs are compatible with Eimac 3-500Zs in that they =
have=20
c. the same ZSAC at the same bias-V. -- i. e., they have a similar Mu.
cheers

On Apr 3, 2004, at 3:26 PM, Jeff King wrote:

>
> A question from a new comer. While rebuilding the SB221, I turned it=20=

> on at
> final test and one tube did not light well, then after about 15=20
> seconds long
> 15 mm long sparks in side near the base, then does not light at all,=20=

> and it
> is slightly whiter inside. Dam!
>
> I need another Eimac 3-500Z. (Not easy to find, Only 3-500ZG is=20
> available
> new.)
> One reads occasionally that it is not so important to have matched=20
> pairs of
> tubes. How much can you safely miss match tubes? Does this extend so=20=

> far
> that one could run an different brand tube, Ie an RF parts 3-500ZG-RF=20=

> or a
> Taylor 3-500ZG with and Eimac 3-500Z?
>
> You will probably laugh at this. Does anyone have knowledge of safely
> running such a pair of different tubes?
>
> I look forward to your advice.
>
> Yours sincerely
> Jeff ZL:4AI
>
>
> _______________________________________________
> Amps mailing list
> Amps at contesting.com
> http://lists.contesting.com/mailman/listinfo/amps
>
Rich Measures, AG6K, 805.386.3734.  www.somis.org/