PURPOSE: To enable the full band reception for VHF and UHF by selecting the frequency interval of the comb-line filter to the common measure of the channel interval frequency in the elastic surface wave channel selector of the TV signals.

CONSTITUTION: For the local oscillation frequency of electronic tuner 1, the maximum output is obtained every 2MHz via elastic surface wave element 2 and then undergoes the detection/amplification 3 and waveform shaping 4. Thus, the pulse is delivered every 2MHz to be supplied to OR circuit 13 and pulse generating circuit 12. Circuit 12 delivers one pulse to 12 input pulses to supply them to circuit 13. The output of circuit 13 undergoes 3-division 14, and the pulse is sampled corresponding to each channel. When the pulse has an agreement with the input channel number supplied from the keyboard through counter 7, the local oscillation frequency of tuner 1 is held by the output. Thus, the channel selection is carried out as desired