I have had the problem on the low bands only (160 & 80)
The near field rf couples to the interface cable depending
on how much rf is in the shack. Also dont locate the cable
near the antenna tuner. I solved it by putting three turns of
the cable on a toroid core (Radio Shack) located at the
circuit end of the cable. I have the circuit at the end of a 3ft
cable in a plastic box and then a short cable to the xmtr.
and it works FB.
KN6OZ
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From: thehalls
To: trlog
Subject: Keying Interface & RF?
Date: Wednesday, August 07, 1996 7:28AM
Priority: Low
Hello Fellow TR Users:
First of all I have to admit that I am mostly an appliance operator...
My problem concerns the homemade keying interface that I put together:
It works great on 80, 15, & 10m, BUT when I try to use it on either 40 or
20m it seems to get some kind of RF (?) interference. I put the little board
in a metal box, used shielded cable...
Has anyone had this problem or have any other tests that I could try? I
was so proud of myself that I actually built the little gismo!
Thanks for any input,
Eric WD9GGY
thehalls@ix.netcom.com
(sometimes it's better to be geograhically challenged, then mentally
challenged...)
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