Ahh maybe I'm thinking up to 27 works then. Do you get 27.4 up to the radio or is this right before say 100' up the tower?
Josh Luthman Office: 937-552-2340 Direct: 937-552-2343 1100 Wayne St Suite 1337 Troy, OH 45373 On Tue, May 15, 2018 at 10:39 AM, Mathew Howard <mhoward...@gmail.com> wrote: > UBNT stuff will take at least 28 volts without any problem. I run pretty > much everything at around 27.4v, and I've never run into any problems with > any ubnt stuff. > > On Tue, May 15, 2018 at 8:34 AM, Josh Luthman <j...@imaginenetworksllc.com > > wrote: > >> Sweet! I'll crank up the power supply another volt. IIRC Ubnt stuff >> dies at 26 or 27 volts, so you can see why I aimed for right at 24v. >> >> >> Josh Luthman >> Office: 937-552-2340 >> Direct: 937-552-2343 >> 1100 Wayne St >> <https://maps.google.com/?q=1100+Wayne+St+Suite+1337+Troy,+OH+45373&entry=gmail&source=g> >> Suite 1337 >> <https://maps.google.com/?q=1100+Wayne+St+Suite+1337+Troy,+OH+45373&entry=gmail&source=g> >> Troy, OH 45373 >> <https://maps.google.com/?q=1100+Wayne+St+Suite+1337+Troy,+OH+45373&entry=gmail&source=g> >> >> On Sun, May 13, 2018 at 9:21 AM, Josh Baird <joshba...@gmail.com> wrote: >> >>> Agreed. I expect your issues will go away if you increase voltage. We >>> run all ePMP @ 48VDC. It fixed these random rebooting issues for us. >>> >>> On Sun, May 13, 2018 at 6:37 AM, Forrest Christian (List Account) < >>> li...@packetflux.com> wrote: >>> >>>> 22.93 is too low. Cambium says 23V is the minimum into the radio. >>>> See http://community.cambiumnetworks.com/t5/ePMP-Installatio >>>> n/ePMP-PoE-Powering-Primer/td-p/49944 >>>> >>>> You need to subtract a bit of loss inside the injector, and then a bit >>>> more for cabling. Plus a bit more for everything else. >>>> >>>> For verification, I took my bench ePMP and hooked it up to my power >>>> supply - it doesn't even turn on until 22.5V at the radio. I'm sure other >>>> copies are probably higher or lower. And I'm sure it changes with >>>> internal temperature of the radio. >>>> >>>> One big difference between the PoE Injector and the SyncInjector is >>>> that the syncinjector uses semiconductor switches which generally have a >>>> bit more voltage drop than a relay. The tradeoff is that the semiconductor >>>> switches can switch far more power than the relays can and can switch >>>> quickly enough to do sync over power. >>>> >>>> >>>> >>>> >>>> >>>> On Sat, May 12, 2018 at 10:26 PM, Josh Luthman < >>>> j...@imaginenetworksllc.com> wrote: >>>> >>>>> So we replaced all 8 surge cards. It's getting 22.95 and 22.93 for >>>>> the two boxes (to the green terminal). Devices are still rebooting... >>>>> >>>>> Epmp never has problems with the same DC supply through the green POE >>>>> injector, forgot to mention that. >>>>> >>>>> >>>>> Josh Luthman >>>>> Office: 937-552-2340 >>>>> Direct: 937-552-2343 >>>>> 1100 Wayne St >>>>> <https://maps.google.com/?q=1100+Wayne+St+Suite+1337+Troy,+OH+45373&entry=gmail&source=g> >>>>> Suite 1337 >>>>> <https://maps.google.com/?q=1100+Wayne+St+Suite+1337+Troy,+OH+45373&entry=gmail&source=g> >>>>> Troy, OH 45373 >>>>> <https://maps.google.com/?q=1100+Wayne+St+Suite+1337+Troy,+OH+45373&entry=gmail&source=g> >>>>> >>>>> On Sun, May 6, 2018 at 8:14 PM, George Skorup < >>>>> george.sko...@cbcast.com> wrote: >>>>> >>>>>> Funny story if you were using ePMP near the beginning. Some of the >>>>>> first original 5GHz integrated radios had labels marked 56VDC. They were >>>>>> definitely NOT capable of being powered from 48/56V. Somebody screwed up. >>>>>> >>>>>> Yeah. We've run Force180/200 survey setups on a small 12V SLA too. It >>>>>> works, but they're rated at 14 volts. Same with the 100 and 450 SMs. >>>>>> Still >>>>>> works. However, I recall the regulator is very inefficient down that low. >>>>>> Like the old 320 and 430 APs could be run on 24VDC, but you really didn't >>>>>> want to do that, and Motorola/Cambium said it was completely unsupported. >>>>>> >>>>>> >>>>>> On 5/6/2018 5:13 PM, Bill Prince wrote: >>>>>> >>>>>>> I had a portable 12V battery that I would use for site surveys with >>>>>>> the old PMP100. I'm pretty sure they would function in the 8-10V region. >>>>>>> >>>>>>> I know nothing about the ePMP radios. Trust George. >>>>>>> >>>>>>> >>>>>>> bp >>>>>>> <part15sbs{at}gmail{dot}com> >>>>>>> >>>>>>> On 5/6/2018 2:33 PM, George Skorup wrote: >>>>>>> >>>>>>>> Original 5GHz integrated and connectorized are 14-30VDC, -4/5 +7/8 >>>>>>>> only. >>>>>>>> >>>>>>> >>>>>>> >>>>>> >>>>> >>>> >>>> >>>> -- >>>> *Forrest Christian* *CEO**, PacketFlux Technologies, Inc.* >>>> Tel: 406-449-3345 | Address: 3577 Countryside Road, Helena, MT 59602 >>>> <https://maps.google.com/?q=3577+Countryside+Road,+Helena,+MT+59602&entry=gmail&source=g> >>>> forre...@imach.com | http://www.packetflux.com >>>> <http://www.linkedin.com/in/fwchristian> >>>> <http://facebook.com/packetflux> <http://twitter.com/@packetflux> >>>> >>>> >>> >> >
