[CQ-Contest] Filters

[Tim Childers K9CQ]

These are low pass filters.  Don't confuse them with "band pass filters". 
These are what you put on your rig or amp to keep you from transmitting 
third order harmonics.  Band pass filters cut off above and below so you 
could run 15 meters and the station next door could be on 40.  With both of 
you running BPF's you eliminate the interference.  If you were running this 
LPF system, you might be fine if you’re the station on 40 but the one on 15 
would still hear you.

Tim, K9CQ

-----Original Message----- 
From: n12614--- via CQ-Contest
Sent: Monday, April 9, 2018 8:21 AM
To: nss at mwt.net ; cq-contest at contesting.com
Subject: Re: [CQ-Contest] Filters


Joe,

I haven't used this one but I do use the Array Solutions AS-419 Bandpasser 
II System (https://www.arraysolutions.com/filters/as-419) driven by their 
BandMaster III band decoder 
(https://www.arraysolutions.com/station-automation/bandmaster-3).  They work 
well and are totally automated so that I can't screw it up.

I'm primarily a VHF guy, but do like to use my radios during SS as a 
multi-low effort.

Don, AC5D


-----Original Message-----
From: Joe <nss at mwt.net>
To: cq-contest <cq-contest at contesting.com>
Sent: Mon, Apr 9, 2018 7:11 am
Subject: [CQ-Contest] Filters

A Buddy of mine bought one of these,
https://www.hamradio.com/detail.cfm?pid=H0-012171
Instead of separate bandpass filters.

I know what it says it does, but I have not been able to find any spec's
on it anywhere. Like what the attenuation curves are for each position.

Anyone?

Joe WB9SBD
-- 
Sig
The Original Rolling Ball Clock
Idle Tyme
Idle-Tyme.com
http://www.idle-tyme.com
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