I am feeding my end-feds with over 100 feet of coax and they work just fine.
Doug - K0DXV
On 2/9/2017 1:21 PM, K9MA wrote:
Well said, Bill!
73,
Scott K9MA
On 2/9/2017 10:39, Bill Leonard N0CU wrote:
The reason your antenna was a lot less finicky with a bit of coax is
that the
EFHW antenna requires a return path for the RF field. Theoretically,
without
a return path, the antenna won't radiate at all. The recommended
setup for
this antenna is for a .05 wavelength counterpoised to be used. EZNEC
models
indicate that there is little benefit to going much longer than .05
wavelengths, and a quarter wavelength is actually less effective than
the
shorter lengths. If no counterpoise is used, then coax shield
becomes the
counterpoise by default.
Bill N0CU
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