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 _________________ Topband Reflector Archives - http://www.contesting.com/_topband
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