Increasing the height by 10% or so is worth a dB or so in
signal level (not S/N ratio). You didn't say if you are
already planning on top loading wires. Adding those will
make a lot more difference than an extra 10% height.
If your antennas are guyed, the loading wires are "free".
Rick N6RK
On 8/25/2016 7:00 PM, Gary Smith wrote:
I've decided to make the plunge and buy one of the 8 element active
arrays for 160M-40M. Looking at the price for the antenna kit, it's
just too much considering the cost of the electronics, so I need to
roll my own.
I was thinking of getting the Telescoping Aluminum Tubing that comes
in 6' lengths from Texas Towers; .375", 5" & 6.25". If I slide each
inside 6", that'll come to a 17' tall element. Is that sufficient
height? Would adding another 2-3 feet make any difference with these
kind of active antennas?
73,
Gary
KA1J
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