N4IS wrote: > Hi Rick >>> > I had full size 160M dipoles (not inverted vees) up at 9 meters and > 18 meters for about six months and did a lot of A/B'ing of them. > On receive, there was never any difference in audible S/N ratio. >>> > > This result is 100% sure to happen. Any time you have more than one > resonant > antenna, they will couple with each other. A-B test on 160m is very > difficult to be done properly when one antenna is resonant. There is
I am well aware of this, which is why I put relays at the feed points to open up the dipole that was not in use. An isolated pair of 1/4 wave wires has virtually no effect on a nearby dipole. Rick N6RK _______________________________________________ Topband reflector - topband@contesting.com