Also, the N000082L022 isn't 100% necessary if using the PTP820S. The PTP820S has a few options for Power Injector, depending on where it will be installed. A less expensive, indoor solution is the:
| N000065L001C | AC Power Injector 56V |
| N000065L003A | US Line Cord Fig 8 |
Some additional information here: http://community.cambiumnetworks.com/t5/Licensed-Microwave/can-i-use-the-PTP650-PoE-Injector-for-PTP820-radio/m-p/42939#M92