Total posts : 45366
I have played with one of these at 100 mw using the supplied Rubber Ducky antenna in the house. In my location a car radio (SuperTuner) could hear it about 900 feet away but it was spotty at best and that was on 87.9. Now at the other end 107.9 there is a fringe station across the state. At 100mw using the same arrangement the distant station would step on it at 900 feet. So, IMHO unless you are interfering with a licensed broadcaster, selling advertising etc. you would not draw much if any attention. Also, 176 MHZ is VHF TV Channel 7 not aircraft.