The only thing which would make this "better" than the usual mag loop is better balance - but W8JI has shown a single wire loop can be much easier to balance than the coax. Not sure how broad banded they get with the Mobius design - that COULD be it's only advantage for this antenna type. By the way, I've use a number of magnetic loops and have found the balance issue to be un-critical as you still get the ultra sharp null off the two ends.
Sent from my iPad On May 8, 2011, at 15:58, "Rick Karlquist" <[email protected]> wrote: > Steve Lawrence wrote: > >> Baum addresses loop frequency response in Note 8: >> >> http://www.ece.unm.edu/summa/notes/SSN/note8.pdf >> >> The demo I saw compared the Pixel loop to a vertical whip. The noise >> rejection was a sharp contrast especially when the loop was rotated. A >> more interesting comparison would be against a standard coax split shield >> loop. >> >> The Pixel product - loop and preamp - looked to be extremely well made. >> >> 73 - Steve WB6RSE > > The question is: why a "Moebius" loop? Note 8 is about loops > in general, and says nothing about Moebius loops. Virtually any > loop design will have nulls broadside to the loop, and even Baum > doesn't claim the Moebius loop has superior nulling. I threw together > a loop for a contest a few years ago and got 70 dB nulling. > It was nothing special, just a shielded loop. Whether the > Pixel product is well made or "works well" (whatever that means) > is unrelated to whether the Moebius design is responsible for > the performance. It may work in spite of being a Moebius design. > > Rick N6RK > > > > _______________________________________________ > UR RST IS ... ... ..9 QSB QSB - hw? BK _______________________________________________ UR RST IS ... ... ..9 QSB QSB - hw? BK
