JPS5732134A - Fm communication equipment for communication orientation - Google Patents

Fm communication equipment for communication orientation

Info

Publication number
JPS5732134A
JPS5732134A JP10751980A JP10751980A JPS5732134A JP S5732134 A JPS5732134 A JP S5732134A JP 10751980 A JP10751980 A JP 10751980A JP 10751980 A JP10751980 A JP 10751980A JP S5732134 A JPS5732134 A JP S5732134A
Authority
JP
Japan
Prior art keywords
signal
communication
spectrum
transmitted
speed
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
JP10751980A
Other languages
Japanese (ja)
Inventor
Shinsuke Ishikawa
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP10751980A priority Critical patent/JPS5732134A/en
Publication of JPS5732134A publication Critical patent/JPS5732134A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/69—Spread spectrum techniques

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)

Abstract

PURPOSE:To obtain an FM communication equipment for communication orientation which is not acquired even by a high-speed radio-wave monitoring device, by diffusing an FM signal spectrum by converting an input signal in time series. CONSTITUTION:A signal supplied from a signal input terminal 1 is converted by a signal converter 8 into a signal which has no fine-signal section. The resulting signal is FM-modulated by an FM modulator 2 and the FM-modulated signal is transmitted from an antenna 4 by way of a power amplifier 3. Therefore, this has no fixed spectrum of a carrier frequency in the spectrum of the transmitted signal and is not acquired easily at a high speed even by a radio-wave monitoring device. The transmitted signal is received by the antenna 4 and, after passing through a high- speed amplifier 5 and an FM demodulator 6, reconverted by a signal power inverter 9 into the original signal, which is supplied to a signal output terminal 7.
JP10751980A 1980-08-05 1980-08-05 Fm communication equipment for communication orientation Pending JPS5732134A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10751980A JPS5732134A (en) 1980-08-05 1980-08-05 Fm communication equipment for communication orientation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10751980A JPS5732134A (en) 1980-08-05 1980-08-05 Fm communication equipment for communication orientation

Publications (1)

Publication Number Publication Date
JPS5732134A true JPS5732134A (en) 1982-02-20

Family

ID=14461248

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10751980A Pending JPS5732134A (en) 1980-08-05 1980-08-05 Fm communication equipment for communication orientation

Country Status (1)

Country Link
JP (1) JPS5732134A (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4329924Y1 (en) * 1966-11-17 1968-12-07
JPS4925041A (en) * 1972-07-03 1974-03-06
JPS5318305A (en) * 1976-08-04 1978-02-20 Toshiba Corp Privacy communication unit
JPS5588451A (en) * 1978-12-26 1980-07-04 Matsushita Electric Ind Co Ltd Privacy telephone system

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4329924Y1 (en) * 1966-11-17 1968-12-07
JPS4925041A (en) * 1972-07-03 1974-03-06
JPS5318305A (en) * 1976-08-04 1978-02-20 Toshiba Corp Privacy communication unit
JPS5588451A (en) * 1978-12-26 1980-07-04 Matsushita Electric Ind Co Ltd Privacy telephone system

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