My Biggest Concern is that a pilot may have one 2.4 Gh radio and a couple of 72 mhz. When switching from the 2.4 to the 72 mhz they may forget to grab the pin (not requiring a pin for the 2.4). This could very quikly become a problem for someone in the air on the same 72 Mhz frequency and cause problems. I feel a pin system for the 2.4 should be incorporated into all flying sites. This would restrict the number of aircraft in the air at one time (my local club is 5) and it would keep you in the habit of reaching for a freqency pin.

Joe Lewis