Patent ID: 8045500

Claim:
A communication system comprising: at least one transmitter that transmits a combined high priority signal and low priority signal, wherein the low priority signal is an enhancement to the high priority signal, wherein said combined high priority and low priority signals are transmitted by multiple transmitters transmitting the same signal over the same frequency; at least one satellite in communication with said at least one transmitter, wherein said at least one satellite receives from said at least one transmitter and re-transmits said combined high priority and low priority signals; at least one terrestrial repeater in communication with said at least one transmitter, wherein said at least one terrestrial repeater receives from said at least one transmitter and re-transmits said combined high priority and said low priority signals; and a plurality of receivers configured to receive said combined high priority and low priority signals, said receivers comprising a first receiver configured to process only said high priority signal and a second receiver configured to process said high priority signal and said low priority signal, wherein said first receiver is a handheld device and emits an output signal based upon only said high priority signal, and said second receiver is a mobile device used on a vehicle and emits an output signal based upon said high priority signal and said low priority signal, wherein said first receiver is equipped with a first antenna characterized as having a first size, and said second receiver is equipped with a second antenna characterized as having a second size greater than the first size.