| 摘要 |
PROBLEM TO BE SOLVED: To grasp reception conditions in real time by extracting an antenna level signal for antenna control which is overlapped with a CS digital reception radio wave through a base band signal, converting it into a VHF or UHF signal and displaying an image on a portable TV with a U/V tuner or the like. SOLUTION: A CSIF signal S1 from a converter 2 provided on a CS antenna 1 is supplied via a current pass type CS mixer 6 to a coaxial cable 3 and inputted via a current pass type CS branch filter 7, which is inserted near a tuner IRD4 for CS digital satellite broadcasting reception, to the IRD4 and video and audio base band signals S2 are outputted. The base band signal S2 from the IRD4 is converted into a VHF or UHF signal S3 by a modulator 8. Then, a U/V signal S4 which is modulated/amplified in a terminal reception image is monitored and received on a TV 10 with U/V tuner. Thus, the reception desired satellite is searched accurately, and the direction of reception antenna is fixed.
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