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References: [ +subject:/^(?:^\s*(re|sv|fwd|fw)[\[\]\d]*[:>-]+\s*)*\[VHFcontesting\]\s+Circular\s+polarization\s+for\s+terresterial\s+modes\s*$/: 4 ]

Total 4 documents matching your query.

1. [VHFcontesting] Circular polarization for terresterial modes (score: 1)
Author: John Geiger <af5cc@fidmail.com>
Date: Fri, 14 Jun 2013 12:47:38 -0500
I have a chance to pick up a Cushcraft 416TB satellite for UHF. I would also like to use it for terresterial modes on 432. Is circular polarization a problem for SSB/CW work on terresterial modes? Wo
/archives//html/VHFcontesting/2013-06/msg00094.html (7,569 bytes)

2. Re: [VHFcontesting] Circular polarization for terresterial modes (score: 1)
Author: Andrew Glasbrenner <glasbrenner@mindspring.com>
Date: Fri, 14 Jun 2013 13:50:31 -0400
Never been an issue for me with either of the M2 antennas for 435 satellite. I've worked NJ and TX from FL on tropo with either the 30 or 42 element. 73, Drew KO4MA Sent from my iPhone ______________
/archives//html/VHFcontesting/2013-06/msg00095.html (7,820 bytes)

3. Re: [VHFcontesting] Circular polarization for terresterial modes (score: 1)
Author: Paul Decker <kg7hf@comcast.net>
Date: Fri, 14 Jun 2013 19:39:36 +0000 (UTC)
I thought it would be a 3db loss to linear polarization. OTOH, for tropo/ms, who really knows what the polarization is at the two ends. _______________________________________________ VHFcontesting m
/archives//html/VHFcontesting/2013-06/msg00098.html (7,510 bytes)

4. Re: [VHFcontesting] Circular polarization for terresterial modes (score: 1)
Author: "Joshua M. Arritt" <jarritt@vt.edu>
Date: Fri, 14 Jun 2013 16:49:59 -0400
Correct -- you're dividing power between a V and H components simultaneously. Therefore, the we de-rate the ERP / RX gain /per/ /plane/ (and thus in the overall system) by 3dB... or about 50%. Not a
/archives//html/VHFcontesting/2013-06/msg00099.html (13,333 bytes)


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