OK...
1) I use a 4:1 Balun Designs 4114ocf on my 40-10 meter OCF dipole.
2) I use a DX-Engineering 4:1 Un-Un on my 43 ft vertical, when it is
set for 43 feet, and no balun at all when I lower it to a 33 ft 40 m
ground plane antenna.
I considered a feed line choke... but DX-E was emphatic it would not be
necessary, and while I see no adverse result therefrom, I wonder
whether a feed line choke would still be a good idea, and I may try one
anyway. In contrast, I wonder why I should purchase a solution without
first having a problem...
3) I use a Cal-AV EB-2 Line Isolation Choke (purchased from Array
Solutions) on my rotatable dipoles made of aluminum tubing. (I see
these no longer appear on the Array Solutions web site...)
4) I have also used the Cal-AV EB-2 Line Isolation Choke on my
elevated vertical ground plane antennas, although I have been fortunate
that I cannot see any advantage with or without it, and a lack of
problems is always a welcome condition.
------------------- K8JHR --------------------
On 7/27/2013 10:59 AM, denton sprague wrote:
Thought would start a little poll..
Which balun are you using with your 238 series TT tuners and multi band antenna?
Currently, I use a balun designs 4214t 4:1 balun to feed my 80 meter horizontal
loop…with 450 ohm feeders.
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