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Re: [CQ-Contest] 419A Bandpass Filter - Value?

To: <cq-contest@contesting.com>
Subject: Re: [CQ-Contest] 419A Bandpass Filter - Value?
From: <john@kk9a.com>
Date: Sat, 20 Feb 2021 11:10:54 -0500
List-post: <mailto:cq-contest@contesting.com>
Indeed ICE filters were problematic, especially on 10m. I found Dunestar 600
to be very reliable and easy to control with a band decoder. The owner is a
silent key so I am not sure of their availability now. VA6AM makes very nice
filters and he is a super guy to work with.

John KK9A


Jim Brown k9yc wrote:

Not much -- it's a poor design, under-designed for power, easily blown 
up, hard to repair. Here's a report I prepared for National Contest 
Journal after measuring all those I could get my hands on from NCCC members.

http://k9yc.com/BandpassFilterSurvey.pdf

73, Jim K9YC

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