This sounds like a workable solution, Bill. However, a Bruene
neutralization bridge might be useful improve stability as well as input
swr above 40m. [Fig. 5 on my Web site].
cheers
>
>a passive input network could be used if the input resistance was 450
>oh.ms and a
>1:3 turns ratio(1:9 impedance ratio) transformer used. This would require
>less than 4 watts
>
>73
>Bill wa4lav
>-----Original Message-----
>From: DF3KV@aol.com
>To: sm0aom@telia.com, Amps@contesting.com
To: <amps@contesting.com>
>Date: Wed, 17 Jul 2002 17:47:28 EDT
>Subject: Re: [Amps] Re: KW Linear for FT-817
>
>
>This could probably also be done using 4 x 4CX250 or similar tubes in
>parallel.
>
>
>
>
>The ex-DDR KN-1E amplifier using 1 4CX250 as driver
>and 4x 2CX250 in the final would do it but is very big and noisy...
>
>Peter
>
>
>
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- R. L. Measures, a.k.a. Rich..., 805.386.3734,AG6K,
www.vcnet.com/measures.
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