Mimosa B5

[sirhc]

Lee Peterson from Mimosa here. Would be interested in understanding why the B5 is having a problem the WISP switch. The radio will work with any 802.3at 48v POE. The additional voltage (56v) in our POE power supply is to account for voltage drops on long cable runs.

Hi Lee, and welcome to the dark side
Please tell Ryan I said hello and Merry Christmas!

Our typical 48V or 48VH POE is actually 50+/- "under full load".
As you can see in the picture below a pretty heavily loaded switch is pushing 49.9V at the RJ45 connector.
CLICK IMAGE TO SEE FULL SIZE

48.png (60.86 KiB) Viewed 4953 times

[adairw]

Didn't make it by the data center Sunday like I hoped and only had a little time today. However I came in, enabled all four 48VH ports and plugged one of the B5 back hauls in and like magic, it fired right up. Now I know I'm not crazy. It did not work the other day. Even swapping cables. But I used the same port and all was well.. I didn't have time to tinker and try the other radio in case it was one or the other. But I really can't see why it would be. very odd.
So as expected, the B5's seem to be fine. but need to do a little more testing just to verify everything.