[Amps] Follow-up...re: Time to ask for help.

[sm0aom at telia.com]

Series-resonant screen bypassing works, and was not unusual in the days of the 4-125A or 4-250A 50 and 144 MHz amplifiers.
It can however be difficult to adjust especially if there are 4 tubes.

73/
Karl-Arne
SM0AOM

----Ursprungligt meddelande----
Från : dezrat at outlook.com
Datum : 2015-07-28 - 10:01 (V)
Till : amps at contesting.com
Ämne : Re: [Amps] Follow-up...re: Time to ask for help.

------------ ORIGINAL MESSAGE ------------(may be snipped)

On Mon, 27 Jul 2015 20:14:33 -0500, you wrote:

>I think the secret to a stable six meter amp is well RF grounded screens.
>
>
>Don W4DNR

REPLY:

Agreed. 

I recall from an ARRL handbook 40 years ago that a .001 uF disk
ceramic cap with leads about 1/2 inch was series resonant at six
meters. Excellent screen bypass, but as others have pointed out the
socked with built in caps is probably best. 

73, Bill W6WRT
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