Layout for G5RV twin feedline?
 

I'm putting in a G5RV. The twin lead feedline is of course part of the
radiation system. Due to trees, powerlines, etc, I can:

a) Run it horizontally 90 deg away from the dipole, at 5 ft above roof
ridgeline.

b) Run it 45 deg down for 15 ft then vertical for remainder (all at 90
deg to dipole). But it ends up between 2 houses, hidden by a hill.

c) Run it at about 15-45 deg to dipole, horizontally even with one leg
of dipole.


Of course, one answer is "try them and see which works best". But if
this is a well known problem with well-known solutions, I'd like to
hear. I'm thinking "a" is my best bet, due to 90 to dipole, but I've
never heard of running the feedline horizontally.

W5DXP writes:

Harry George wrote:
I'm thinking "a" is my best bet, due to 90 to dipole, but I've
never heard of running the feedline horizontally.

"a" is best. You probably want to keep the feedline from radiating
so install a 1:1 choke at the coax/twinlead junction.
--
73, Cecil http://www.qsl.net/w5dxp



Thanks for the feedback. Actually, I just moved everything about 12'
west. Now have a mast on the deck, clean runs for the dipole legs,
and a straight drop for the twinlead for 20' then an angle. I just
bypass (i.e., go over) the roof problem altogether. Seems to be
receiving ok; will check xmit ASAP.


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