ORIGINAL: unknown
How about a transmitter with a trunking circuit like cell-phone

. You simply dial up your receiver with you own number before flying [8D] The only problem would be dropping signal just like cell phone drops call
Yeah great, a radio system with all the reliability of a mobile call; "No network Coverage" comes to mind. " Please try Later"![:@]
Hey, I can crash all by myself, I don't need your help