We have seen with many brands of radio linking systems that it is just as important to also match the polarity of the antennas at both ends (where you are using a separate antenna from the RF module of electronics). If you are having an issue, two things to check:
- on just one end of the link, swap the antenna cables so instead of going A1–>C1 and A2–>C2 you are going A1–>C2 and A2–>C1 (A=Antenna, C=Connector on RF module)
- Rotation of the antenna antenna (gradually rotate clock wise and then anti-clock wise to see if the performance improves)
With systems that have fixed antennas, the same can be done by instead of swapping the antenna cables, rotate the whole mount 90 degrees and then fine tune the rotation.
We realise not all antenna mounts support fine tuning the rotation, so this can sometimes be a bit challenging.
Happy to Help,