JPS5280708A - Communication equipment - Google Patents

Communication equipment

Info

Publication number
JPS5280708A
JPS5280708A JP15675275A JP15675275A JPS5280708A JP S5280708 A JPS5280708 A JP S5280708A JP 15675275 A JP15675275 A JP 15675275A JP 15675275 A JP15675275 A JP 15675275A JP S5280708 A JPS5280708 A JP S5280708A
Authority
JP
Japan
Prior art keywords
communication equipment
contact
low cost
small size
switch mechanism
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
JP15675275A
Other languages
Japanese (ja)
Inventor
Hiroshi Ishii
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.)
Seiko Epson Corp
Suwa Seikosha KK
Original Assignee
Seiko Epson Corp
Suwa Seikosha KK
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 Seiko Epson Corp, Suwa Seikosha KK filed Critical Seiko Epson Corp
Priority to JP15675275A priority Critical patent/JPS5280708A/en
Publication of JPS5280708A publication Critical patent/JPS5280708A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J5/00—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner
    • H03J5/02—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner with variable tuning element having a number of predetermined settings and adjustable to a desired one of these settings
    • H03J5/0245—Discontinuous tuning using an electrical variable impedance element, e.g. a voltage variable reactive diode, in which no corresponding analogue value either exists or is preset, i.e. the tuning information is only available in a digital form
    • H03J5/0272—Discontinuous tuning using an electrical variable impedance element, e.g. a voltage variable reactive diode, in which no corresponding analogue value either exists or is preset, i.e. the tuning information is only available in a digital form the digital values being used to preset a counter or a frequency divider in a phase locked loop, e.g. frequency synthesizer

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Channel Selection Circuits, Automatic Tuning Circuits (AREA)
  • Superheterodyne Receivers (AREA)

Abstract

PURPOSE:To realize small size and low cost by performing synthesizer selection of PLL system through switch mechanism containing code plate and contact.
JP15675275A 1975-12-27 1975-12-27 Communication equipment Pending JPS5280708A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15675275A JPS5280708A (en) 1975-12-27 1975-12-27 Communication equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15675275A JPS5280708A (en) 1975-12-27 1975-12-27 Communication equipment

Publications (1)

Publication Number Publication Date
JPS5280708A true JPS5280708A (en) 1977-07-06

Family

ID=15634532

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15675275A Pending JPS5280708A (en) 1975-12-27 1975-12-27 Communication equipment

Country Status (1)

Country Link
JP (1) JPS5280708A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5514385U (en) * 1978-07-10 1980-01-29

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5514385U (en) * 1978-07-10 1980-01-29

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