I had a similar problem with a 80m rotating dipole on a 160' Rohn 65G
tower when I lived in the Chicago area, although mine was pretty
consistent. Moving it 650 miles away solved my problem.
John KK9A
To: "'rfi@contesting.com'" <rfi@contesting.com>
Subject: [RFI] RFI Broadcast Station Mixing in Crank-Up tower?
From: Rich Hallman - N7TR <rich@n7tr.com>
Date: Tue, 20 Oct 2015 02:00:48 +0000
Has anyone had any problems with intermittent mixing from a close broadcast
station with a Crank-Up tower? I think I may have an issue with one of my
towers. Cranked up I hear mixing all over 80 meters (Every 10
KC).....Cranked
down its gone. I already eliminated the antennas. Mixing gets very
intermittent in wind as the tower moves around.
Thoughts about grounding the top section to the bottom when fully extended?
Was thinking of grounding the coax at the top and bottom of the tower?
Thanks....
Rich N7TR
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