Telecommunications – Transmitter and receiver at separate stations – Single or vestigial sideband system
Patent
1989-11-13
1990-09-04
Eisenzopf, Reinhard J.
Telecommunications
Transmitter and receiver at separate stations
Single or vestigial sideband system
455102, 455103, 455703, 375 43, 375 77, H04B 168, H04B 102
Patent
active
049550837
ABSTRACT:
A radio transceiver is disclosed for use in an SSB communication system having FM data capability. The dual-mode radio transceiver of the present invention includes a receiver capable of demodulating and deriving AFC from either (a) the voice channel having voice messages transmitted via single sideband amplitude modulation with a pilot carrier, or (b) the data channel having high speed data messages transmitted via narrowband frequency modulation in the same channel bandwidth. Furthermore, the dual-mode radio transceiver includes a transmitter capable of transmitting one of either of the above types of modulation on the appropriate channel, as determined by information received from the high speed data messages transmitted on the control channel.
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Eastmond Bruce C.
Phillips Sharon E. T.
Eisenzopf Reinhard J.
Krause Joseph P.
Kuntz Curtis A.
Motorola Inc.
Parmelee Steven G.
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