If he is running 200W or less look at the single band filter designs
by 5B4AGN - they are modified W3NQN designs and building a single
filter without the circuit boards would not be difficult. See:
https://uk.groups.yahoo.com/neo/groups/TXBPF/info
If high power is an issue, both Array Solutions and InnovAntenna
have high power single band filters. InnovAntennas handles the
4O3A products - see: http://www.innovantennas.us
73,
... Joe, W4TV
On 4/22/2014 11:38 AM, Gary Smith wrote:
Just got the word from the repair facility that proximity to another
transmitter was the likely cause of my father's Icom receiving front
end damage. That would have to have been from me transmitting on
another band when he was on. My tribander is 20 feet from his 80M inv
V
I have a coax relay on his rig that disconnects the antenna when his
rig is turned off and when he is on I avoid 80M which is the only
band he uses so I never transmit on 80 when he is on. I've heard of
but never seen or used filters that are supposed to be good for
isolating one band in a multi op contesting situation. Any
suggestions of what filter I might could use on his coax to keep
other frequencies from being an issue to him on 80 again?
Thanks,
Gary
KA1J
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