I believe Chuck said GPS does nothing in FDD mode. It's really only for TDD synchronization. Obviously with FDD you're always transmitting and receiving simultaneously.

I would run the co-located radios as masters on the same Tx freq. That's really the only way it's going to work anyway. 15 degrees may not be enough separation in azimuth. Maybe turning the power down on the shorter link would do it.

On 5/13/2015 8:09 PM, Andreas Wiatowski wrote:
Full duplex…
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From: "George Skorup (Cyber Broadcasting)"
Reply-To: "af@afmug.com <mailto:af@afmug.com>"
Date: Wednesday, May 13, 2015 at 9:08 PM
To: "af@afmug.com <mailto:af@afmug.com>"
Subject: Re: [AFMUG] Airfiber 24 weird issue

Are you doing half or full duplex?

On 5/13/2015 8:02 PM, Andreas Wiatowski wrote:
Thanks!
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From: Jeremy
Reply-To: "af@afmug.com <mailto:af@afmug.com>"
Date: Wednesday, May 13, 2015 at 8:58 PM
To: "af@afmug.com <mailto:af@afmug.com>"
Subject: Re: [AFMUG] Airfiber 24 weird issue

Absolutely.  It will not work without it.

On Wed, May 13, 2015 at 6:56 PM, Andreas Wiatowski <andr...@silowireless.com <mailto:andr...@silowireless.com>> wrote:

    Out of curiosity…should I be turning on GPS timing?  Does it even
    work?
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    From: Josh Reynolds
    Reply-To: "af@afmug.com <mailto:af@afmug.com>"
    Date: Wednesday, May 13, 2015 at 8:49 PM
    To: "af@afmug.com <mailto:af@afmug.com>"
    Subject: Re: [AFMUG] Airfiber 24 weird issue

    Make both airfibers on the shared rooftop masters, with reversed
    tx/rx. I think the most we have at one location is 4, and there
    is no more than 10 feet from end to end of the structure. They
    are on slightly different azimuths.

    Josh Reynolds
    CIO, SPITwSPOTS
    www.spitwspots.com  <http://www.spitwspots.com>

    On 05/13/2015 04:46 PM, Andreas Wiatowski wrote:
    We have 2 Airfiber 24’s co-located on a building rooftop… they
    have about 15ft horizontal separation.  The one air fibre pair
    is aimed at a tower about 1KM away and not the tower side we are
    about 75ft in the air.  The other Airfiber is located on a
    building across the road at the same height.  The azimuth is
    about 15 degrees off of each other.  The link from roof to
    tower, works 100%. The link from building to building is about
400ft away and we are having weird issues getting it to link. Is there some sort of co-location magic to make this work? I
    read somewhere that we should have master or slave mode matching
    at the co-located sites.

    Any words of wisdom are appreciated.

    -Andreas

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