I am experiencing some funny trends in all my PtP wireless setups using RB433 with the R52Hn mini pci cards with identical antennae at both ends. First I installed 2.5km PtP link with identical 5GHz 24dBi grid antennae using the nstreme protocol and ROS 5.11 with one side set to bridge and the other side station bridge. I noticed the station bridge side constantly registering rx-rate of 6mbps although tx-rate was registering 54mbps. The same was through for a 3.2km link both using 20MHz channel-width.
This afternoon I established a 10km link with two old identical Mikrotik parabolic dishes (approx 64cm in diameter) with same gear (only change is antennae and 10MHz channel-width) and observed similar low rx-rate of 3mbps and tx-rate of 36mbps on station bridge side. signal strength of -54dBm and signal noise ratio of 64dB and noise floor of -118dBm on channel 5185. I however noticed "current-ofdm-errors: 1560" compared to a value of 170 on bridge side. In all setups only HT0 is enabled since I was using single feed antennae
My question is what could be causing the low rx-rate on station-bridge side in all the installations. Am i missing something?
Secondly I want to take advantage of the 4.8GHz and 4.9GHz channels and using the beeps/audio on the routerboards for setting antenna alignment. Any guides as to that will be very much appreciated.