Should have looked this up before I hit 'send': http://www.broadband-hamnet.org/hsmm-mesh-forums/view-postlist/forum-794/topic-794-emergency-power-and-poe-for-ubiquiti.html
In short: The spec (For the M2, NOT the HP... I didn't look that far) says a minimum of 10.5v; So, get a passive injector, and run off 12v. On Sun, Jun 30, 2019, 08:30 Tyrell Jentink <[email protected]> wrote: > "Double the amperage" is nonsense... These power supplies are > constant-voltage, the amperage is merely reporting how much current is > available. Go into any <strike>Radio Shack</strike> and they will tell you > that you need to match the voltage of the power supply, and EXCEED the > Amperage <>Oh, wait...</>. > > The problem is that there is a TON of PoE equipment out there that doesn't > follow 802.11af... > > I'm not an expert in Ubiquity expert, but there are also a ton of Amateur > Radio operators out there using Bullet M2-HPs on field deployable > networks... How are they powering them? > > > On Sun, Jun 30, 2019, 07:02 Louis Kowolowski <[email protected]> > wrote: > >> You’re going to be looking at double the amperage if you cut the voltage >> in half in order to maintain the same wattage. Simply cutting the voltage >> in half w/o changing the amperage will result in half the power. I doubt >> that the equipment will work properly at half the power, or with double the >> amperage. >> >> >> >> > On Jun 30, 2019, at 8:16 AM, Michael Barnes <[email protected]> >> wrote: >> > >> > I'm considering using some Ubiquity radios (Ubiquiti BULLET-M2-HP) for a >> > field deployable network. They say they use PoE to power the units. >> > However, the PoE specs say 48V, while the Bullet data sheet says says >> max >> > 24V. Ubiquiti has their own PoE power inserters, but they run off 120V >> and >> > I need this system to run off 12V. When I look for 12V PoE inserters, >> they >> > are for IP cameras that run from 12V and don't follow the actual PoE >> > standard 802.3af. >> > >> > So, will I be able to power an Ubiquiti Bullet from 12V? >> > >> > Thanks, >> > Michael >> > _______________________________________________ >> > PLUG mailing list >> > [email protected] >> > http://lists.pdxlinux.org/mailman/listinfo/plug >> >> -- >> Louis Kowolowski [email protected] >> <mailto:[email protected]> >> Cryptomonkeys: >> http://www.cryptomonkeys.com/ <http://www.cryptomonkeys.com/> >> >> Making life more interesting for people since 1977 >> >> _______________________________________________ >> PLUG mailing list >> [email protected] >> http://lists.pdxlinux.org/mailman/listinfo/plug >> > _______________________________________________ PLUG mailing list [email protected] http://lists.pdxlinux.org/mailman/listinfo/plug
