I can second that - I was trying to get an 80 meter inverter L with FCP working this past spring and the measurements I got with my MFJ-259B were really whacky. Working with K2AV we realized that my ground-mounted Hustler 5BTV (80 - 10 meters) was reacting with the Inverted L. I lowered the 5BTV and the "L" resonance got to where it was supposed to. :-) I since removed the 80 meter part of that 5BTV and now use the "L" exclusively on 80.
JIm / W6JHB On Tuesday, Oct 30, 2012, at Tuesday, 1:33 PM, Rick Karlquist wrote: > 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 - [email protected] _______________________________________________ Topband reflector - [email protected]
