Having never tried it, either with a passive whip nor an active one, I am not certain, however generally a random wire is directional from the ends, although not extremely so. However when looking at an active whip, it might only be directional off the 'top' end.
Russ Edmunds 15 mi NNW of Philadelphia Grid FN20id <[email protected]> -------------------------------------------- On Sun, 3/2/14, Les Rayburn <[email protected]> wrote: Subject: Re: [IRCA] Active Whips Mounted Horizontally To: "Russ Edmunds" <[email protected]> Cc: "IRCA List" <[email protected]>, "NRC List" <[email protected]> Date: Sunday, March 2, 2014, 2:38 PM Russ, Great. I need to take advantage of the nice weather, and get that antenna/rotor mounted. One last question about the active whips. If I do choose to mount them horizontally, what directions will they "favor"? I'd like to "aim" them away from the worst of the noise sources. I believe that they would pickup best off the "ends" of the whip, correct? So I could point it away from the house with the worse noise maker? Les Rayburn, Director High Noon Film 130 1st Avenue West Alabaster, AL 35007-8536 (205) 621-7500 (205) 621-7505 FAX (205) 253-4867 CELL http://www.highnoonfilm.com --------------------------------------------- This e-mail contains information that may be confidential or privileged and is intended only for the person(s) named above. Any other distribution, copying or disclosure is strictly prohibited. If you have received this e-mail in error, please notify the sender immediately and return the original transmission to the above address by mail without making a copy. On 3/2/2014 1:32 PM, Russ Edmunds wrote: The Wellbrook loops are broadband and generally work well with an SDR, and are less susceptible to noise than a vertical or wire antenna. Russ Edmunds 15 mi NNW of Philadelphia Grid FN20id <[email protected]> -------------------------------------------- On Sun, 3/2/14, Les Rayburn <[email protected]> wrote: Subject: Re: [IRCA] Active Whips Mounted Horizontally To: "Russ Edmunds" <[email protected]>, "Mailing list for the International Radio Club of America" <[email protected]> Date: Sunday, March 2, 2014, 2:28 PM Russ, What about a broadband loop, such as the Wellbrooke ALA-1530S? I have one purchased, and setting the shack awaiting installation. Would this be a good choice? Les Rayburn, Director High Noon Film 130 1st Avenue West Alabaster, AL 35007-8536 (205) 621-7500 (205) 621-7505 FAX (205) 253-4867 CELL http://www.highnoonfilm.com --------------------------------------------- This e-mail contains information that may be confidential or privileged and is intended only for the person(s) named above. Any other distribution, copying or disclosure is strictly prohibited. If you have received this e-mail in error, please notify the sender immediately and return the original transmission to the above address by mail without making a copy. On 3/2/2014 1:17 PM, Russ Edmunds wrote: 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] -- 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]
