I'm testing the PowerBox for deployment on rooftops with a 30m Cat6 cable run from the 24V PoE injector into ETH1, then two UniFi Mesh APs + one LightBeam AC for backhaul, connected on ETH3 to ETH5.
Measuring while directly powered via the barrel connector over a 50cm cable, setup works fine, with a maximum load of 15W with three devices running concurrent bandwidth tests while connected to the UniFi Mesh.
If I then power over the 30m test cable, it all falls apart. The LightBeam gets powered, but the UniFis don't get powered. Enabling the "long PoE cable" option only causes the UniFis to power up, then shut down, with lots of audible PSU hissing going on. These are the measured values (if anyone needs explanation of columns etc., shout):
I've come up with the following ideas to test:
- Use a passive "PoE splitter" to "convert" the voltage at the PowerBox side to a barrel connector. May be useless if barrel + ETH1 PoE in are hardwired together.
- Use an active PoE converter from 48V at/af to 24V. I have found these which claim to supply up to 24W at 24V, but not tested: https://www.balticnetworks.com/ignitene ... erter.html
- Run AC to the rooftop, stick the power supply inside a waterproof box, and power the PowerBox via barrel connector (ugly, but hey...)
If anyone has any brilliant ideas or experience on similar setups, it'd be awesome to hear!
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