Patent ID: 7725075
Filing Date: 2010-05-25
Classification: H04W

Abstract:
1. A method of operation of a cross-band simplex radio frequency communications system including, a first band receiver on a first radio frequency band for receiving and demodulating a first received signal, a second band transmitter using a second radio frequency band to modulate and transmit the demodulated first received signal when in a cross band mode, and a second band receiver using the second radio frequency band, the method including the steps of: detecting the occurrence of a predetermined condition associated with the first received signal in the first band receiver; replacing transmission of the demodulated signal received on the first band receiver with a breakthrough signal for a first predetermined time; ceasing transmission from the second band transmitter; and receiving on the second band receiver for a second predetermined time and determining if a signal is received on the second band receiver and if so allowing remote operation of the first band receiver of the single frequency simplex communications system.