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Re: [Amps] R. MEASURES PRAYERS ANSWERED

To: Pete Smith <n4zr@contesting.com>, amps@contesting.com
Subject: Re: [Amps] R. MEASURES PRAYERS ANSWERED
From: Peter Chadwick <g3rzp@g3rzp.wanadoo.co.uk>
Reply-to: g3rzp@g3rzp.wanadoo.co.uk
Date: Thu, 1 Jun 2006 21:31:44 +0200 (CEST)
List-post: <mailto:amps@contesting.com>
Looking back through my old ARRL Handbooks, I see that the parasitic 
suppressors varied somewhat. Some were the parallel L-R combination used 
generally today, others were an actual trap ( which seems, prima facie, at the 
very least, peculiar!) while another approach was a trap, loaded by a shunt 
resistor, tuned to the parasitic frequency, and coupled by means of a link to 
the anode circuit. At first sight, such an approach could see a lower series 
impedance on 10 metres while maintaining the impedance at the parasite 
frequency, but has anyone here ever tried it? I presume that the idea is, in 
all cases, to get an anode parasitic resonance below the grid resonance

You could even make the trap out of nichrome and avoid having to have a 
resistor.
73
Peter G3RZP
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