Sorry here's further details :-

arf-high-power-radio-transceiver

Baud is set at 9600

No cable as at the moment the radio module is inserted on a socket on the pic prototype pcb so is only tracks.

I need to separate the radio with aerial and the pic controller.

There is a switch and two leds for the 'control' pic, which then sends the serial commands to the radio module on the same pcb.

The radio module is connected to a yagi aerial at 450mm long overall which needs to be at least 3m in the clear.

Due to cable losses at 868Mhz it's not reasonable to use coax, so the radio module is in a weatherproof box and connected with 50mm of coax to the aerial. At the moment during testing it's also the pic pcb.

With one yagi and a loop on other module I've reached 865m, which is two way. 'Control' sends signal and 'receive' acknowledges back to action a led.

865m is not it's range limit, it's the farthest distance I can use control module due to running off a cigar lighter plug in car.

I need a small battery pack for the control so I can go farther on foot for testing, I have the 'receive' part connected to my psu at home and at the moment drive off to location that's line of sight.

I will try to post pictures of the modules.

Rob