Patent ID: 6397049
Filing Date: 2002-05-28
Classification: H03G

Abstract:
A two-way radio including:a radio frequency receiver having a modulated radio frequency signal output; a variable bandwidth filter having an input coupled to said modulated radio frequency signal output; demodulator circuitry coupled to said variable bandwidth filter; an audio transmitter; and processing circuitry having an input coupled to said demodulator circuitry and an output coupled to said audio transmitter, said processing circuitry having a control output coupled to a control input of said variable bandwidth filter, said processing circuitry providing for a squelch and unsquelch mode, wherein in use when said radio is operating in said squelch mode, said processing circuitry controls said variable bandwidth filter to have a first bandwidth and when said radio is operating in said unsquelch mode said processing circuitry controls said variable bandwidth filter to have a second bandwidth which has a smaller frequency range than said first bandwidth.