Radio TV camera system with additional transmission channels - uses one MHZ wide gaps in bands four and five at eight MHZ spacings

摘要

The radio television camera system has additional transmission channels which are accommodated in the 1MHz wide gaps in bands IV/V at 8 MHz spacings. At the transmitter the television signal is sub-divided by an arrangement of filters into n frequency regions each of which has a bandwidth of less than 1 MHz. To transmit these frequencies n carrier signals are used whose frequencies are chosen so that the n sideband signals resulting from SSB amplitude modulation are transmitted in n of the 1 MHz gaps at spacings of 8 MHz. At the receiver the television signal is retrieved by demodulating the sidebands or frequency packets.