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#1
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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. |
#2
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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 |
#3
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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 |
#4
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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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