406MHZ EMERGENCY BEACON WITH IN-BAND HOMING TRANSMITTER

摘要

A search and rescue beacon includes a main transmitter transmitting a Cospas-Sarsat signal at a main frequency and an auxiliary homing transmittertransmitting a homingsignal at a homing frequency close to the main frequency. Advantageously boththe Cospas-Sarsat signal and the homing signal are generated by a single synthesizerswitching between amain Cospas-Sarsat burst transmission and a continuous homing frequencytransmission of thehoming signal. The Cospas-Sarsat signal is advantageously transmitted at ahigher power thanthe homing signal. The single synthesizer may use a single amplifier chain.The singlesynthesizer and amplifier chain may use a single antenna.