The main function of receiver is to capture the signal of the desired frequency by filtering other adjacent frequency and demodulate signal and give to loudspeaker, apart from that mobile receiver also able to detect RSSI signal and other usable signals transmitted by BS and MSC

The receiver is a dual conversion super heterodyne radio receiver.

An RF amplifier boosts the level of recived cell site signal.

The first mixer translates the incoming signal down to a first IF of 82.2MHz.

The signal passes through IF amplifier and filters to the second mixer. The second IF is usually either 10.7 MHz or 455 KHZ.

The signal is then demodulated, de-emphasized, filtered and amplified before being applied to the output speaker in the handset.

IF is usually either 10.7MHz or 455KHz -emphasized, filtered and amplified before being applied to the output speaker in the handset.