Congrats on your new 75 meter antenna. The HyTower is a real winner. I have
been using HyTowers since 1977 and they work very well.
How well your new antenna works depends on several factors.
Ground radials (more is better) will provide significant improvements in gain
The vertical will "hear" stations differently than your slopers as the two
antennas have different vertical take off angle performance.
The VSWR may not go up much with a good ground system, but that depends on
other factors as well.
Remember, a low VSWR does not always mean it is a good antenna.
The HyTower (like almost every antenna) obeys the law of reciprocity. What ever
good/bad effects your ground system has on receive will also be the same on
transmit as far as efficiency, gain, pattern, etc.
You can view 80 meter monoband HyTower installations at http://www.k3lr.com
73 and Good Luck!
Van Fair wrote:
> I just finished erecting a hy Gain HY tower vertical which is 1/4 wave for
> 75 meters and this one is set up to work only on 75 meters. The only ground
> I have thus far is one ground rod. The hard work is still ahead. The Unit
> appears to work ok with resonance about where I want it but it hears about
> 1.5 s units below my slopers. The SWR is very low but I am sure it will go up
> with a good ground field in place. My questions are. (1) Will the addition
> of a good ground field have the same positive effects on receive that I
> should expect on the transmitted signal .
> (2) Will the addition of a good ground field have any effect on the resonant
> frequency that it now has with only a single ground rod. Van W4GIW
> See: http://www.mscomputer.com for "Self Supporting Towers", "Wireless
> Weather Stations", and lot's more. Call Toll Free, 1-800-333-9041 with any
> questions and ask for Sherman, W2FLA.
> TowerTalk mailing list
See: http://www.mscomputer.com for "Self Supporting Towers", "Wireless Weather
Stations", and lot's more. Call Toll Free, 1-800-333-9041 with any questions
and ask for Sherman, W2FLA.
TowerTalk mailing list