JPS5525227A - Repeating method - Google Patents

Repeating method

Info

Publication number
JPS5525227A
JPS5525227A JP9752178A JP9752178A JPS5525227A JP S5525227 A JPS5525227 A JP S5525227A JP 9752178 A JP9752178 A JP 9752178A JP 9752178 A JP9752178 A JP 9752178A JP S5525227 A JPS5525227 A JP S5525227A
Authority
JP
Japan
Prior art keywords
signals
group frequency
secure
gain control
channel
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
JP9752178A
Other languages
Japanese (ja)
Inventor
Akikazu Kurohara
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 JP9752178A priority Critical patent/JPS5525227A/en
Publication of JPS5525227A publication Critical patent/JPS5525227A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J1/00—Frequency-division multiplex systems
    • H04J1/02—Details
    • H04J1/08—Arrangements for combining channels

Abstract

PURPOSE:To give the gain control in order to secure the constant level for the signal of the channel with every direction to the channel signals featuring the different levels with every direction, and thus to secure the allotment only by the necessary CH number from the start. CONSTITUTION:In case the signal is transmitted from slave stations 3-8 to central station 2 via tandem office 1, group conversion part 12a converts the signals sent from various parts into the fixed group frequency band at office 1. And direction- based automatic gain control parts 24a-24f secure nearly the same signal level at the group frequency bands sent from each direction. And band-pass filters 25a-25l are provided in the same number as the channels formed at the group frequency band. The signals are compounded again after such levelequalization stage (24) and filtering stage (25) to produce the signals of the group frequency band. In such constitution, the gain control is possible with every channel, thus ensuring an effective allotment for the CH number.
JP9752178A 1978-08-10 1978-08-10 Repeating method Pending JPS5525227A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9752178A JPS5525227A (en) 1978-08-10 1978-08-10 Repeating method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9752178A JPS5525227A (en) 1978-08-10 1978-08-10 Repeating method

Publications (1)

Publication Number Publication Date
JPS5525227A true JPS5525227A (en) 1980-02-22

Family

ID=14194551

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9752178A Pending JPS5525227A (en) 1978-08-10 1978-08-10 Repeating method

Country Status (1)

Country Link
JP (1) JPS5525227A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0654311U (en) * 1992-12-25 1994-07-22 日本無線株式会社 Relay amplifier

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0654311U (en) * 1992-12-25 1994-07-22 日本無線株式会社 Relay amplifier

Similar Documents

Publication Publication Date Title
JPS55163927A (en) Sound-band multiplex transmission system
JPS53138636A (en) Transmission method of color video signal
CA2047251A1 (en) Radio communication apparatus which can be tested by radio and optical test signals
JPS5525227A (en) Repeating method
YU224479A (en) Assembly of a circuit for digital conversion of audio freqency signals into signals of a frequency multiplex system
GB2059170B (en) Four-pole network for separating signals of signals of two double-polarised frequency bands
JPS52109966A (en) Receiving beam former
JPS57194689A (en) Method for data communication in catv system
JPS5731235A (en) Receiving system
JPS5444421A (en) Allocation method of frequency
JPS53117316A (en) Automatic compensation system for frequency characteristics
JPS5242308A (en) Multiplex frequency signal receiver
SU930711A1 (en) Device for transmitting and receiving broadcasting programs
JPS5669943A (en) Light data way device
JPS52114207A (en) Booster amplifier
JPS53105107A (en) Receiver
JPS56119539A (en) Four-wire transmission system
JPS56115051A (en) Fm communication system
JPS53132936A (en) Double communication system
JPS534445A (en) Ceramic filter circuit
JPS53117315A (en) Automatic compensation system for frequency characteristics
JPS56122538A (en) Existing and auxiliary system of communication equipment
JPS6461137A (en) Microwave band communication system
JPS5435611A (en) Signal separation circuit
JPS56120239A (en) Simple privacy telephone system