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

[Jim McDonald]

W9SU (SK) was the owner of ICE, and his brother is still manufacuring some of the products, apparently for Array Solutions.

http://www.iceradioproducts.com/



Jim N7US
Sent from Samsung tablet


-------- Original message --------
From: john at kk9a.com
Date: 2/20/21 10:15 AM (GMT-06:00)
To: cq-contest at contesting.com
Subject: Re: [CQ-Contest] 419A Bandpass Filter - Value?

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