I have a 135' OCF (Off Center Fed) dipole which is coax fed with a 6:1
balun at the feedpoint, and it works on all bands from 80-10 except 15
with my K2/KAT2. Performance seems very good an all bands except 30m,
where it's just OK.
Larry N8LP
Karl Larsen wrote:
Zac Brown wrote:
Fellow Elecrafters,
I am putting up a 135 ft flat-top at my QTH. I'll be feeding it with
about 60 ft. of 450 ohm ladder line, connecting the feedline to the
BL2, and tuning it with the KAT2.
With the balun and auto-tuner you have a great antenna system!
However it may be the wrong length. I use the 88 foot flat-top which
works just fine on 80 and 40 meters, and 30 and 20 meters as well.
With 135 feet of wire your antenna will not load up well on 40 and 20
meters. But it will work great on 80 meters.
The flat-top length is not real important and it should not be
resonant at the Ham bands. The 88 feet is nice because on 20 meters it
is a double bazzoka and has gain off each side of the dipole.
73 Karl K5DI
I was wondering if anyone on the list has tried this arrangement and
could comment on whether the KAT2 will have any problems tuning this
setup from 80 - 20m. I'm also curious about which bands work better
with the balun set to 1:1 vs. 4:1 with this setup.
Thanks,
Zac Brown
KD5IEF
K2# 4907
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