[iam_7up_gamer]

Originally Posted by Nicolas

Yes I agree in this but you can use the comparator and timers for Microship you can transmit first sample for 20 second and after the mode change automatically passive
then you can work at two mode active with TX
and passive with RX


Also you can use one antennas by this way i find it so so better for more distance sure that.

Yes is true i use before by timer betwen transmitter and receiver , i use timer betwen ir led and radio fm and is good , when transmitter get active phenomenon target get stimulate and remain 1 minute , nicolas how much is phenomenon remain time for you ?