R52n-M: This card has only 200mW of power compared to 315mW for the R52Hn.
R52Hn also has two MMCX connectors.
Two MMCX connectors will give you a stronger connection to your antennas than the U.FL connectors. However, with the dual-chain – two channels coming out of it, you will be splitting the power output.
Troubleshooting / issues:
- R52H: 803.af and 803.at POE standards are not supported. You may want to try a non-compliant POE deivice.
- Do not use higher voltage than 24volt.
- Are they properly grounded? If in a chassis the static coming up the wire can cause issues.