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[Amps] Plate Choke

To: Amps@contesting.com
Subject: [Amps] Plate Choke
From: KD7QAE <KD7QAE@ARRL.NET>
Date: Wed, 10 Aug 2005 06:43:36 +0100
List-post: <mailto:amps@contesting.com>
All,

I just finished sacrificing 12" of Teflon bar stock to the 2xGS35b 
project this evening.  The result is a 320uH inductor in 2 sections.  I 
will sweep the unit tomorrow at work and report back with the resonance 
story.  The basics are as follows:

Wire:  24AWG
OD of coils: approx. 39mm
Form 1: Coil 1: 25mm
Form 1: Coil 2: 27mm
Form 1: Coil 3: 49mm

Form 2: Coil 1: 26.5mm
Form 2: Coil 2: 24mm
Form 2: Coil 3: 18mm
Form 2: Coil 4: 27mm

The coils are parallel (against conventional wisdom) Center to Center 
separation: 85mm.  It certainly looks cool.  I plan on adding a HV 
capacitor and relay at the connection point if necessary to switch out 
~1/2 of the inductance if necessary.

Tomm, KD7QAE

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