I think I might try taking the sync from a syncbox jr and connect it to a patch panel with 12 jacks like this one on Amazon. (See below) That way we can put the sync box jr where we can get sync but still put the distribution point close the the APs.
Not sure if splitting sync 12 ways will degrade the signal tho. -Sean NavePoint 12-Port Cat6 UTP Unsheilded Mini Patch Panel with Wallmount Bracket Included Black https://www.amazon.com/dp/B008QR5LIU/ref=cm_sw_r_cp_api_glt_fabc_BWGY3ND2HF8YAZKRB3PG On Sat, Sep 25, 2021 at 10:03 AM Chuck McCown via AF <af@af.afmug.com> wrote: > I wonder what would happen if you put foil on the inside of the syncbox > everywhere except for a window for the GPS module? > Or just a sheet of metal in the direction of where you think the > interference is coming from. > > And/or, put a parasitic antenna element above the GPS module on the > outside. It would just be a metallic disk of the right diameter. > Experiment with spacing. I am guessing about a 4” diameter metallic disk. > Actually you would want to go about 3.5 inches. It needs to be smaller > than a resonant patch. > > You could also put a ring in place of the disk. A choke ring. Too lazy > to calculate it but it would probably be about 6-8” diameter. > > Forrest could experiment with this and see if he can get some more > gain/directivity out of the system. > > *From:* Sean Heskett > *Sent:* Saturday, September 25, 2021 9:37 AM > *To:* Forrest Christian (List Account) > *Cc:* AnimalFarm Microwave Users Group > *Subject:* Re: [AFMUG] PacketFlux Syncbox 12 external gps antenna > > Hi forest, > > Yes we have rack injectors on site providing sync over power to the APs. > However, we always like to have two sync sources especially at this site > which is at 10,500 feet, gets an average of 400” of snow per year and is > difficult to access fall/winter/spring because of snow or mud. > > What’s odd is we also have a UGPSs at this tower (to provide sync to our > two CBRS 450m’s) and the UGPS isn’t loosing lock under the heavy > interference. Unfortunately the UGPS only does sync for 2 APs so we’d have > to install 6 of them for the 5ghz array we have there instead of the one > syncbox 12. > > Thanks, > > Sean > > > On Fri, Sep 24, 2021 at 8:35 PM Forrest Christian (List Account) < > li...@packetflux.com> wrote: > >> There isn't a good solution for timing port sync. >> >> However, there's always the power port sync option. For modern radios, >> you should be able to use a powerinjector+cambium sync up top, with the GPS >> receiver down near the bottom. >> >> On Fri, Sep 24, 2021 at 12:33 PM Sean Heskett <af...@zirkel.us> wrote: >> >>> Does anyone know if there is a way to either mount an external gps >>> antenna or send sync from say a syncbox jr to a syncbox 12? >>> >>> We are on a commercial tower and with the syncbox 12 mounted near our >>> APs there’s too much interference to get gps sync (probably due to some >>> nearby cellular gear). The only place we can get sync is near the ground >>> so that would require running 12 sync cables up the tower in a shielded >>> conduit. >>> >>> We tried contacting PacketFlux support but haven’t received a response >>> yet. >>> >>> -Sean >>> >>> -- >>> Sean Heskett >>> >>> ZIRKEL >>> Internet • WiFi • Phone • TV >>> 970-871-8500 x100 - Office >>> >> >> >> -- >> - Forrest >> > -- > Sean Heskett > > ZIRKEL > Internet • WiFi • Phone • TV > 970-871-8500 x100 - Office > > ------------------------------ > -- > AF mailing list > AF@af.afmug.com > http://af.afmug.com/mailman/listinfo/af_af.afmug.com > > -- > AF mailing list > AF@af.afmug.com > http://af.afmug.com/mailman/listinfo/af_af.afmug.com > -- Sean Heskett ZIRKEL Internet • WiFi • Phone • TV 970-871-8500 x100 - Office
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