IT1034102B - Radio communication method for service conversations - has message and distance monitoring signal transmission in digital form - Google Patents

Radio communication method for service conversations - has message and distance monitoring signal transmission in digital form

Info

Publication number
IT1034102B
IT1034102B IT2103975A IT2103975A IT1034102B IT 1034102 B IT1034102 B IT 1034102B IT 2103975 A IT2103975 A IT 2103975A IT 2103975 A IT2103975 A IT 2103975A IT 1034102 B IT1034102 B IT 1034102B
Authority
IT
Italy
Prior art keywords
frequency
distance monitoring
message
signal transmission
radio communication
Prior art date
Application number
IT2103975A
Other languages
Italian (it)
Original Assignee
Orion Radio
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Orion Radio filed Critical Orion Radio
Application granted granted Critical
Publication of IT1034102B publication Critical patent/IT1034102B/en

Links

Landscapes

  • Synchronisation In Digital Transmission Systems (AREA)

Abstract

The transmitter is phase modulated by digital signals, and the received signal frequency is demodulated in the receiver. The transmitter frequency is at the same time modulated with the service signal, and the two signals are separated in the receiver by a filter or a frequency multiplier. The service signal is coded, transmitter frequency is modulated by the coded signal, and the received signals are decoded. If the service signal consists of several independent parts, e.g. conversation, signalling and distance monitoring, they are transmitted by frequency or time division multiplexing.
IT2103975A 1974-04-03 1975-03-07 Radio communication method for service conversations - has message and distance monitoring signal transmission in digital form IT1034102B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
HUOI004725 1974-04-03

Publications (1)

Publication Number Publication Date
IT1034102B true IT1034102B (en) 1979-09-10

Family

ID=11000288

Family Applications (1)

Application Number Title Priority Date Filing Date
IT2103975A IT1034102B (en) 1974-04-03 1975-03-07 Radio communication method for service conversations - has message and distance monitoring signal transmission in digital form

Country Status (1)

Country Link
IT (1) IT1034102B (en)

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