I am planning to install a large loop antenna for 160/80/40 meters on my 155? Rohn 45G tower. I have been reading all the articles and information that I have seen. I plan on using ½ inch viny
Hi, Well I've used Electrostatically Shielded loops in the past but they have always been for Receive only. and much smaller than a wavelength. If you are considering using this antenna for multiband
I tried to send you a more detailed direct comment but your spam settings are very restrictive. In brief, you will only end up with the equivalent of a large wire loop for transmitting, and you will
ORIGINAL MESSAGE: -- REPLY FOLLOWS -- Changing the subject slightly, what is it exactly you are shielding the loop from? I have heard of electrostatically shielded loops but never quite understood th
Bill, the answer to your question is in Chapter 5 of the ARRL 20th edition of the ARRL Antenna Book. The nonmagnetic shield is "to maintain loop balance with respect to ground, by forcing the capacit
... and why is that you need to go to all that extra effort to achieve perfect balance in a transmitting loop? I still don't get it. Dave AB7E _______________________________________________ ________
I've never seen a large (~1 wl) "shielded" loop in use, although I'm sure it's been done. The shield of the hardline in this case IS the antenna and NOT an electrostatic shield (despite widespread fo
ORIGINAL MESSAGE: -- REPLY FOLLOWS -- That makes sense, although I would not have thought that balance to ground would be important enough to worry about. I dont' recall seeing this a consideration w
I don't think it's an issue that is worrisome with a large transmitting loop. The useful property of small loops is that they have a very clean pattern with very deep nulls. Any loop response to com
This is an ideal application for a common mode choke on the feedline snug up to the antenna feedpoint. As a starting point, follow the guidelines in the Choke Cookbook below. http://audiosystemsgroup