| 摘要 |
In a channel search performed first after the installation of a broadcast receiver, a switch is switched to each of an attenuator ATT 5 side and an amplifier Amp 7 side to acquire reception state information (AGC, BER, C/N). The broadcast receiver is provided with a counter 32a for counting the number of receivable channels on each of the amplifier Amp 7 and the attenuator ATT 5. If image/voice can be normally received over the corresponding channel is determined based on the reception state information from reception state information detecting means 31. If it is determined that image/voice can be normally received, the counter of the attenuator side or the amplifier side is incremented by one. Upon termination of the channel search, the two counters are compared and the switch is fixed to the side on which more channels can be normally received. Accordingly, a wide range of signal power levels (from low power to high power) can be received in excellent condition. |
