"Jay in the Mojave" wrote in message
umnetworking...
Steve wrote:
Hello Jay, please give me your opinion on running a 1 to 1 balun
(isolator) at the feed point of a yagi beam. Does it improve the
rejection? I've been reading up on it and some claim it helps.
Thoughts?



Thanks, Steve.

Hello Steve: I have had customers put the DX Engineering Isolator on
various antennas. I don't think it will be a big deal on the ground plane
antennas. But I would try to install them 1/4 wavelength down the coax
from the antenna connection on non ground plane antennas.

The Beam Antennas, I don't know. But beams that use Gamma Matches seem to
have some RF Energy radiating down the coax causing TVI and other
interference. It may be worth a try.

Wish I could give you more input here, but I have never used one of those
isolators. QST magazine showed the internal workings of this isolator, a
few months ago.

Hope this helps.

Jay in the Mojave

Hello Jay

Yeah I'm not so much concerned with RFI back down the jacket so much, but
from what I've been reading that can distort the direction and/or rejection,
especially on a yagi. I figured I'd ask the guru before I put it in line.

73
Steve.