Thanks for the info. It seems that I'm okay if I'm under a certain power, but I do not understand how to know my power. My datasheet says that at 5 to 6v the output power into a 50Ω antenna is 14 dBm. I am using 3.3v and a piece of wire for an antenna (≈30-35 cm). Would this be low enough? I am fairly sure that I am using a intermittent control signal, but the transmitter is always connected to power. So am I correct or not?