My loop testing has shown problems using an odd multiple of a quarter wave
I ended up using just over a 1/2 wave on 80m to a remote balun with about 20
coax into the shack. I tuned the loop for about 3.60 mhz and I have to use
on 75m but on 40m, 20m, 17m & 12m I can bypass the tuner completely. On 15m
10m I only need the tuner on the lower band edges (if I run the amp). The
in the rig handles this with ease. I had to do some trimming on the loop
and the 450 LL
to get thiis where I wanted it but the results was worth the effort.
----- Original Message -----
From: "K0PYK" <email@example.com>
To: "Tower Talk" <firstname.lastname@example.org>
Sent: Monday, October 25, 2004 9:07 AM
Subject: [TowerTalk] Vertical Loop Feedline
> Tower Talk'ers,
> My Question for the day is; Should I feed my proposed 80-meter vertical
> with a quarter wave of 75 ohm coax or 450 ohm ladder line to a 4:1 home
brew balun and then 50 ohm coax to the rig??? My rigs have auto tuners. I
presently have a 40 meter vertical with a quarter wave of 75 ohm coax. This
seems to work well with the tuner as a multiband antenna. Would it work
better with ladder line, a balun and coax. If this is better is there a
certain length of ladder line???
> Thanks in advance.
> Tom, K0PYK
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See: http://www.mscomputer.com for "Self Supporting Towers", "Wireless Weather
Stations", and lot's more. Call Toll Free, 1-800-333-9041 with any questions
and ask for Sherman, W2FLA.
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