I've built one of those that we used in FD last year with excellent results.
Pretty easy to build but you really need a VNA and a lot of time to get the
thing tweaked for it's maximum performance.
It's a solid design; I think several teams used the design in WRTC'14.
73/jeff/ac0c
www.ac0c.com
alpha-charlie-zero-charlie
-----Original Message-----
From: Ron WT7AA
Sent: Saturday, March 19, 2016 11:35 PM
To: Jeff AC0C
Cc: rtty@contesting.com
Subject: Re: [RTTY] bandpass filters
From: "Jeff AC0C" <keepwalking188@ac0c.com>
Date: Fri, 18 Mar 2016 20:19:11 -0500
The best adjacent band rejection I have measured is off the Array
Filtermax
6- band unit. Amazing. They will run 200w just fine.
...
K9YC had a pretty good comparison in NCJ a couple of years back which
covers
all of these save the Filtermax. If you are going to lay out the bucks
for
this and are are serous about So2r it's well worth hunting the article
down.
When I looked into this awhile ago, I found
http://un7lg.shawwebspace.ca/blog/post/high_quality_200_watts_hf_triple/
Seems interesting, anyone try these?
WT7AA
Ron
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