Now,I developing wireless EMG but I have some problems. I use Xbee to Transmit and receive EMG data but maximum sampling rate of Xbee is 1 sample/1 ms. or 1000 Hz.
Main of EMG is 100 - 300 Hz. so It have to use sampling rate 10 times of EMG is about 3000 Hz.
The past, I ever developed wireless EMG which used radio frequency. Graph is so complete more than now.