Glad to see that for the most part this thread kept the discussion on "polarization" rather than "polarity" these sound similar but they are not synonymous.
Sent from my iPad On Feb 18, 2015, at 6:13 PM, Chuck McCown <[email protected]<mailto:[email protected]>> wrote: Technically that is impossible to answer due to the infinite number of waveguide modes. However, the practical answer is that we always use a very simple mode. And in that mode, the probe always comes out of the broad wall, about a quarter wavelength from the end of a dead ended waveguide. And that probe is the polarization. You have to match the openings. The internal dimensions of the waveguide and the hole in the radio must line up. In the event the mechanical orientations are at right angles, you have to use a section of flexible waveguide to make the twist. From: Dan Petermann<mailto:[email protected]> Sent: Wednesday, February 18, 2015 4:10 PM To: [email protected]<mailto:[email protected]> Subject: Re: [AFMUG] OT: Waveguide polarization Hmm, now I am not so sure. Is it the orientation of the waveguide that determines the polarity or the orientation of the probe? For example, waveguide exits the radio with wider dimension in a left/right direction, and enters antenna in a up/down direction, did the polarization of the signal rotate 90 degrees? On Feb 18, 2015, at 3:56 PM, Chuck McCown <[email protected]<mailto:[email protected]>> wrote: If you ever need to question this again, it is opposite the major dimension. If you could see the little probe /antenna that feeds the waveguide, you would see it sticking up out of the broad wall. The polarization of that little probe is the polarization of the waveguide. And it is parallel to the short walls. From: Dan Petermann<mailto:[email protected]> Sent: Wednesday, February 18, 2015 3:35 PM To: [email protected]<mailto:[email protected]> Subject: Re: [AFMUG] OT: Waveguide polarization Great! Thanks to all who answered. On Feb 18, 2015, at 3:19 PM, Daniel White <[email protected]<mailto:[email protected]>> wrote: Josh I hate to disagree with you here… but a waveguide is a waveguide. Maybe your link is in the wrong polarization :-) Top is correct. *************************************************************************** Daniel White - Managing Director SAF North America LLC Cell: +1 (303) 746-3590 [email protected]<mailto:[email protected]> Skype: danieldwhite Social: LinkedIn<http://www.linkedin.com/in/danielwhite84> *************************************************************************** From: Af [mailto:[email protected]] On Behalf Of Josh Luthman Sent: Wednesday, February 18, 2015 1:55 PM To: [email protected]<mailto:[email protected]> Subject: Re: [AFMUG] OT: Waveguide polarization On SAF CFIP Lumina it was opposite. Like your first image. Josh Luthman Office: 937-552-2340<tel:937-552-2340> Direct: 937-552-2343<tel:937-552-2343> 1100 Wayne St Suite 1337 Troy, OH 45373 On Wed, Feb 18, 2015 at 3:54 PM, Dan Petermann <[email protected]<mailto:[email protected]>> wrote: If you have a waveguide connection to an antenna, what direction (up/down or left/right) does the wider portion of the waveguide go? ___ | | | | = H Pol? | | or _______ | | = H Pol?
