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[TowerTalk] spice models for filters?

To: towertalk <>
Subject: [TowerTalk] spice models for filters?
From: Jim Lux <>
Date: Mon, 23 Jan 2012 12:22:15 -0800
List-post: <">>
it being tangentially connected to towers and HF antennas, so hopefully 
reasonably on-topic...

Does anyone know if there are SPICE models for filters like the ICE or 
NQN, etc?

(yes, it's not that hard to just type them in, but especially if someone 
has put in the non-ideal aspects.. ESR, inductor loss, etc.)

it would be interesting to look at the response of the filter, combined 
with the coax, and the varying Z of the antenna.  Particularly when 
looking at things like cosite interference (for field day kinds of 

(or, for that matter, has anyone published S parameters from running 
them on a VNA?)

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