The UBNT stuff used to be a lot more sensitive than it is. Anything modern should be fine up to 28V on the 24V radios.
On Tue, May 15, 2018 at 7:34 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> >>> >>> >> > -- *Forrest Christian* *CEO**, PacketFlux Technologies, Inc.* Tel: 406-449-3345 | Address: 3577 Countryside Road, Helena, MT 59602 forre...@imach.com | http://www.packetflux.com <http://www.linkedin.com/in/fwchristian> <http://facebook.com/packetflux> <http://twitter.com/@packetflux>
