Just for information if anyone wants to use these rf modules. I did a range test of the modules with the shown aerials.

4.687km line of sight with reliable operation.


Just modding the boards to test serial cable length working between pic and rf module. I will try 5m cable length, as that's what is required on site.

I'm also looking at providing RSSI on a lcd display. I need to add AT commands in code to switch the other transceiver into test mode where RSSI is sent every second.

Just need to work it out.