| 摘要 |
PURPOSE:To attain the effective use of a satellite repeater output without the production of reception power of an SCPC system because or the presence/absence of a large power carrier or level fluctuation, by providing a connection controller of the request assigning multiple connecting system having a function switching the maximum carrier wave number into two stages. CONSTITUTION:In a figure, 41 shows an intermediate frequency amplifier (TV IFA) for television, 42 is an AGC amplifier/detector (AGC DET) generating a detection signal and an AGC signal discriminating the presence/absence of a television signal from the output of the 41, and 43 is a demodulator (TV DEM) demodulating the television signal in a central station, and a broad band signal detecting means consists of an antenna ANT20, a low noise amplifier LNA21 of a reception system, a hybrid RFHYB22, a down-converter D/C25, a hybrid IFHYB26 and the devices 41 and 42. The output switches the maximum carrier wave number of the SCPC assigned for the use by the connection controller (DAMA)44 of the central control DAMA system into two stages, and the SCPC carrier wave is increased when the television receiver is not used for the effective use of the satellite repeater output. |
