[Antennas] MORE " G5RV " ANTENNA QUESTIONS !!!!
Pat W
[email protected]
Mon, 22 Jul 2002 13:40:24 -0700 (PDT)
John, you have the best feeder possible for a G5RV, ie,
no coax. The losses on coax can be exhorbitant,
depending on the frequency and the coax type. My own
analysis shows 10dB+ loss on bands out of tune(like 10
mHz) with 70' of rg58, for example.
Leave the excess ladder line outside the shack, attach
a simple balun between it and a very short piece of
coax to the rig.
I would reccommend for anyone else to replace the coax
with odd multiples of 1/2 wavelength ladder line. The
losses never exceed 1 dB on all bands after that.
However, your tuner will notice a big difference in
input SWR to match because the coax losses are gone!
Pat W0OPW
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