From: Paul
Date: Sat, 09 Jun 2001 00:47:29 +0100
Subject: Re: [TSSP] Interesting article on Medhurst, Wheeler, modeling,etc.
Finn, I've recomputed your coil with the revised Cint software, fh1: bare d=0.160m h/d=0.90 sr=0.86 b/h=6.92 turns=500 f1 359.5kHz 358.3kHz -0.3% f3 839.2kHz 890.5kHz +6.1% f5 1100.0kHz 1439.7kHz +30.9% f7 1450.0kHz 2011.9kHz +38.8% The f1 and f3 are your new measurements, f5 and f7 are the old. There's a possibility that somehow you struck an f4 resonance, which just happens to be around 1100kHz, so that your f7 is really f5. Might have happened if the grounding arrangements where not up to scratch, eg no ground plane. Just a possibility worth looking into. Got to decide whether material dielectrics really are an issue. Cheers, -- Paul Nicholson, Manchester, UK. --
Maintainer Paul Nicholson, paul@abelian.demon.co.uk.