Yeah, the problem with 900mhz PTP is that unlike 2.4ghz or 5ghz, you can't run any higher power in ptp mode than you can in ptmp, so 2.4ghz often does work better... but there are some cases where 900mhz PTP does make sense.
If it's PTP, you definitely don't want the AUX port version, since there's no aux port on those radios, just a standard timing port. I believe the 900mhz 450i SM/PTP is actually based on the original 450 SM hardware (not the 450i... it runs on 24v, for example, which I don't think any other 450i radio does), so my guess is that the changes Forrest is talking about don't apply, and it would work fine with the syncpipes you have, but I'm just guessing. On Fri, Jun 19, 2020 at 6:52 AM Forrest Christian (List Account) < li...@packetflux.com> wrote: > What they did in the 'i' hardware was change the drive strength require. > I'm not sure if that applies to the SM hardware or not, or the 900Mhz. > > The safest item would be the 'syncbox junior deluxe' which has a port you > can power it with and then 6p6c ports to hook into the timing port on the > radio. > > On Fri, Jun 19, 2020 at 5:46 AM <cg...@graytechsoftware.com> wrote: > >> It is actually the PTP 450i that I’m talking about. I probably wouldn’t >> use it again because it seems once you have enough power to use 900 MHz in >> PTP, then you have plenty of power to use 2.4 GHz in PTP. >> >> >> >> I was going to get the Syncbox Junior Aux Port, but there is no “uGPS >> power” option in the firmware, so I’m not sure the radio can power it. >> >> >> >> I only have one of these, it is 1 hour away and already running. >> Otherwise, I would just test it with what I have here. >> >> >> >> >> >> >> >> *From:* AF <af-boun...@af.afmug.com> *On Behalf Of *Forrest Christian >> (List Account) >> *Sent:* Friday, June 19, 2020 5:55 AM >> *To:* AnimalFarm Microwave Users Group <af@af.afmug.com> >> *Subject:* Re: [AFMUG] PacketFlux Sync for PTP 450i 900 MHz? >> >> >> >> Yes, with the caveat that they changed some stuff in the 450i *AP* >> hardware which makes it incompatible with pipes before revision I0. >> >> >> >> If it works and gets sync, it's good to go. If it doesn't, then you'll >> just need to find a syncpipe or syncbox I0 or later. (That's the letter >> I, it's kinda nice how that ended up landing = I0 = 450i. Would have been >> better if they hadn't mangled the sync port to need a different circuit, >> but that's the way it goes). >> >> >> >> >> >> >> >> On Thu, Jun 18, 2020 at 8:20 PM Mathew Howard <mhoward...@gmail.com> >> wrote: >> >> The 900mhz PTP is definitely SM hardware. >> >> Apparently I was wrong about them supporting sync over power... looks >> like you would indeed need a timing port device. But in that case, any old >> sync pipe should work, shouldn't it? >> >> >> >> >> http://community.cambiumnetworks.com/t5/Sub-6-GHz/PTP450-900-BHM-Sync-Options/td-p/74379 >> >> >> >> I suspect we are actually talking about a PMP AP though, so we'd need to >> clarify that >> >> >> >> On Thu, Jun 18, 2020 at 8:53 PM Forrest Christian (List Account) < >> li...@packetflux.com> wrote: >> >> I see that everyone else is as confused as I am about some of these PTP >> Radios. >> >> >> >> I'm about 100% certain that the 900Mhz PTP is be the AP hardware, in >> which case it should support any timing method you throw at it: Canopy >> sync, cambium sync, or aux port sync. >> >> >> >> For a single radio,the Syncbox Aux Port is probably the least expensive >> option, although I personally would throw the combination of a syncbox >> basic, sitemonitor base 3, and powerinjector+canopy sync at it as that will >> allow you to power and control any other radios at the site and gain >> temperature and telemetry for the site. >> >> >> >> On the syncbox only option, The Syncbox Aux Port get's its power from the >> radio, just turn on uGPS power in the AP, and run a cat5 from the aux port >> to this unit. >> >> >> >> If this isn't based on the AP hardware, then we need to go to plan B, >> which will probably be a timing port device, but I'll need to research more. >> >> >> >> On Thu, Jun 18, 2020 at 12:30 PM <cg...@graytechsoftware.com> wrote: >> >> I have a site where I need sync only for a PTP 450i 900 MHz AP. Any >> recommendation for which PacketFlux injector to use? >> >> [I have some old syncpipes, but they are not new enough.] >> >> Thank you, Chris >> >> -- >> AF mailing list >> AF@af.afmug.com >> http://af.afmug.com/mailman/listinfo/af_af.afmug.com >> >> >> >> >> -- >> >> - Forrest >> >> -- >> 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 >> >> >> >> >> -- >> >> - Forrest >> -- >> AF mailing list >> AF@af.afmug.com >> http://af.afmug.com/mailman/listinfo/af_af.afmug.com >> > > > -- > - Forrest > -- > AF mailing list > AF@af.afmug.com > http://af.afmug.com/mailman/listinfo/af_af.afmug.com >
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