My understanding is that more electrical noise is vertically polarized than horizontally, so there could be an advantage in a horizontal antenna on that score. However, by putting the antenna in the horizontal plane, it is now no longer omnidirectional, but rather somewhat bidirectional, which may or may not be a good thing.
Where noise is a problem, one's optimum choices would be an inductive antenna. This will normally also be directional, whether it's an indoor tuned air core loop or an outdoor untuned superloop or flag. The former would also include a ferrite core tuned indoor antenna. These will all almost always be quieter than a wire antenna of almost any length, either vertically or horizontally polarized. But since you are using an SDR, which is broadband, any of the tuned indoor loop options would be impractical as they are not broadband. Russ Edmunds 15 mi NNW of Philadelphia Grid FN20id <[email protected]> -------------------------------------------- On Sun, 3/2/14, Les Rayburn <[email protected]> wrote: Subject: [IRCA] Active Whips Mounted Horizontally To: "[email protected]" <[email protected]>, "[email protected]" <[email protected]> Date: Sunday, March 2, 2014, 2:08 PM Forgive more of my silly questions, but here goes. I continue to try to fight, abate, and reduce local noise here in my suburban neighborhood. Deed restrictions complicate things further, since no visible outside antennas are allowed. Would mounting the active whips horizontally have any effect on the noise that they're receiving? I notice that noise seems to generally be lower using horizontal antennas than verticals in my situation? -- 73, Les Rayburn, N1LF Maylene, AL EM63 Member NRC, IRCA, & Medium Wave DX Circle Former CPC Chairman for NRC/IRCA Perseus SDR, SDR-IQ,Funcube Pro, Wellbrooke ALA-1530+ loop, LF Engineering Active Whips, Quantum Phaser, Kiwa Loop, Palstar MW Pre-Selector _______________________________________________ IRCA mailing list [email protected] http://montreal.kotalampi.com/mailman/listinfo/irca Opinions expressed in messages on this mailing list are those of the original contributors and do not necessarily reflect the opinion of the IRCA, its editors, publishing staff, or officers For more information: http://www.ircaonline.org To Post a message: [email protected] _______________________________________________ IRCA mailing list [email protected] http://montreal.kotalampi.com/mailman/listinfo/irca Opinions expressed in messages on this mailing list are those of the original contributors and do not necessarily reflect the opinion of the IRCA, its editors, publishing staff, or officers For more information: http://www.ircaonline.org To Post a message: [email protected]
