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Old February 15th 10, 10:43 PM posted to rec.radio.amateur.antenna
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Default receive polarity

On Feb 15, 4:51*am, Art Unwin wrote:
Has there ever been a study *that shows the relative consistency of
received signal polarity to see if it would be advantageous for multi
polarity receive antennas?


there have been studies of polarization of signals over various paths
and frequencies. but i don't know that anyone has studied their
polarity... why don't you try that and let us know how it comes out.
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Old February 15th 10, 11:48 PM posted to rec.radio.amateur.antenna
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Default receive polarity

On Feb 15, 4:43*pm, Dave wrote:
On Feb 15, 4:51*am, Art Unwin wrote:

Has there ever been a study *that shows the relative consistency of
received signal polarity to see if it would be advantageous for multi
polarity receive antennas?


there have been studies of polarization of signals over various paths
and frequencies. *but i don't know that anyone has studied their
polarity... why don't you try that and let us know how it comes out.

___________

Apparently Art believes that a radiated, linearly-polarized a-c
waveform has a unique polarity, rather than a unique polarization.

RF
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Old February 16th 10, 08:25 AM posted to rec.radio.amateur.antenna
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Default receive polarity

In message
, Art
Unwin writes

Has there ever been a study that shows the relative consistency of
received signal polarity to see if it would be advantageous for multi
polarity receive antennas?


When I listen to the local 2m beacon ( horizontal polarisation) which
is north of me ,I get a strong reflection from something to the south
that turns the polarisation vertical. I noticed that while testing an
antenna in the garden.

Brian GM4DIJ
--
Brian Howie
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Old February 28th 10, 05:34 AM
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Quote:
Originally Posted by Art Unwin View Post
Has there ever been a study that shows the relative consistency of
received signal polarity to see if it would be advantageous for multi
polarity receive antennas?
As I'm both a 'diehard scanner enthusiast' & an Amateur Radio Op, I've found that you can use two cheap antenna rotators, with either an ordinary TV antenna [for scanner hobby] or a 2/70cm antenna [normal versus SSB]. The idea, being to use one rotator to 'bore sight', in azimuth, on the desired signal. With a suitably designed bracket, the other rotator controls the vertical/horizontal antenna orientation. Naturally, you only need 90 degrees for polarity change; and it goes without saying, be sure your elements clear all parts of your antenna and guywire supports. !!! 'Crunchy' sounds eminating for your antenna location, usually means $$$.
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