Re: [IRCA] Active Whips Mounted Horizontally

[Russ Edmunds <wb2bjh@xxxxxxxxx>]

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
<wb2bjh@xxxxxxxxx>



--------------------------------------------
On Sun, 3/2/14, Les Rayburn <les@xxxxxxxxxxxxxxxx> wrote:

 Subject: [IRCA] Active Whips Mounted Horizontally
 To: "am@xxxxxxxxxxx" <am@xxxxxxxxxxx>, "irca@xxxxxxxxxxxxxxxx" <irca@xxxxxxxxxxxxxxxx>
 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
 
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