My attic loop is probably a bit less than 88ft, and probably a bit too
close to 66ft, but it's the biggest I can fit in my attic. With an
Elecraft BL1 balun at the feed point, and a couple of metres of RG-213
down to the radio directly below it, the KAT2 can match it on all bands
160m to 10m, except 60m which I don't have a permit for and my K2 can't
do anyway. My new T1 will match it on all bands 80m to 6m.
Although I can match the loop on 80 and 160m it isn't very useful. I
think it radiates in a vertical direction on those bands. Mostly I just
pick up loads of computery noises. I've never made a contact on any of
those bands, which I've always considered closed to QRP operators
restricted to indoor antennas. (If anyone knows how to radiate a decent
signal on 80m from something that will fit in a 6m x 6m sq attic, I'd
like to know the secret.)
By the way, I used an LDG 4:1 balun previously, and the results were
much improved when the BL1 replaced it. Signals seemed stronger, the
KAT2 managed a lower SWR on 40m and it easn't possible to match the loop
at all on 80 and 160 with the LDG balun.
73,
--
Julian, G4ILO (K2 #392)
G4ILO's Shack: http://www.tech-pro.net/g4ilo
Gene Worth <[EMAIL PROTECTED]> wrote:
I'm needing to install an antenna in my new home. An attic loop is a
necessity ... can't run an outside wire easily.
I'm assuming that an 88-ft loop will be non-resonant in all bands 80-10,
and fed with ladder line to the tuner should work.
Other suggestions?
Thanks.
gene
KC0RXY soon /9
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