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[AMPS] Another angle on cathode-matching ckts

To: <amps@contesting.com>
Subject: [AMPS] Another angle on cathode-matching ckts
From: km1h@juno.com (km1h@juno.com)
Date: Mon, 15 Feb 1999 10:25:19 -0500


On Mon, 15 Feb 1999 10:02:16 -0000 Peter Chadwick
<Peter_Chadwick@mitel.com> writes:
>
>Carl says:
>
>>A modern xcvr has >40 dB harmonic attenuation. A good LP filter has 
>70+
>>dB attenuation at the 3rd harmonic
>
>The xcvr may well have, but the GG tube conducting for 180 degrees or 
>so
>will produce harmonic currents in its input.


True, but that still does nothing to explain why some input network
layouts are inefficient on just 10M and 15M.

73  Carl  KM1H


 
>
>
>73
>
>Peter G3RZP
>
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