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Old August 9th 04, 09:16 PM
Dr. Slick
 
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Default PHASING HARNESS FOR 2 BAY CIRCULAR POLARIZED ANTENNA?????

Good Evening,

I'd like some advice on building the phasing harness
required for the following antenna:

http://members.tripod.com/~AMN92/cp_ant.htm

It certainly would use 75 ohm RG-6, and i
believe it would be 1 full wavelength, fed in the
center, with the two bays on either end (1/2 wave
to each antenna). You would also need 4 turns of
3-4" diameter coils in the RG-6 at the feedpoints,
to serve as baluns, which decouples antenna currents
down the braid.

So in theory, this should be two 100 ohm
impedances in parallel, for a total of 50 ohms,
which can them be fed with garden variety RG-8 or
RG-213.

Any advice or input is greatly appreciated.


Slick
 
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