SE363211B - - Google Patents

Info

Publication number
SE363211B
SE363211B SE06730/72A SE673072A SE363211B SE 363211 B SE363211 B SE 363211B SE 06730/72 A SE06730/72 A SE 06730/72A SE 673072 A SE673072 A SE 673072A SE 363211 B SE363211 B SE 363211B
Authority
SE
Sweden
Application number
SE06730/72A
Inventor
S W Bjelvert
Original Assignee
Foerenade Fa
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 Foerenade Fa filed Critical Foerenade Fa
Priority to SE06730/72A priority Critical patent/SE363211B/xx
Priority to US00278814A priority patent/US3790891A/en
Publication of SE363211B publication Critical patent/SE363211B/xx

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B11/00—Transmission systems employing sonic, ultrasonic or infrasonic waves
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers
    • H03G3/20—Automatic control
    • H03G3/30—Automatic control in amplifiers having semiconductor devices
    • H03G3/34—Muting amplifier when no signal is present or when only weak signals are present, or caused by the presence of noise signals, e.g. squelch systems
    • H03G3/341—Muting when no signals or only weak signals are present

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Noise Elimination (AREA)
SE06730/72A 1972-05-24 1972-05-24 SE363211B (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
SE06730/72A SE363211B (ja) 1972-05-24 1972-05-24
US00278814A US3790891A (en) 1972-05-24 1972-08-08 Receiver for a frequency-modulated electro-acoustical signal having squelch means for suppressing noise when no signal is coming through the receiver

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE06730/72A SE363211B (ja) 1972-05-24 1972-05-24

Publications (1)

Publication Number Publication Date
SE363211B true SE363211B (ja) 1974-01-07

Family

ID=20269463

Family Applications (1)

Application Number Title Priority Date Filing Date
SE06730/72A SE363211B (ja) 1972-05-24 1972-05-24

Country Status (2)

Country Link
US (1) US3790891A (ja)
SE (1) SE363211B (ja)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5136555A (en) * 1991-07-05 1992-08-04 Divecomm, Inc. Integrated diver face mask and ultrasound underwater voice communication apparatus
US5539705A (en) * 1994-10-27 1996-07-23 Martin Marietta Energy Systems, Inc. Ultrasonic speech translator and communications system
US20030002682A1 (en) * 2001-07-02 2003-01-02 Phonex Broadband Corporation Wireless audio/mechanical vibration transducer and audio/visual transducer

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3218607A (en) * 1962-12-10 1965-11-16 Bendix Corp Underwater telephone
US3568068A (en) * 1967-10-13 1971-03-02 Motorola Inc Squelch circuit for frequency modulation receiver

Also Published As

Publication number Publication date
US3790891A (en) 1974-02-05

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