GB1366471A - Selective calling squelch circuit for receiving systems - Google Patents

Selective calling squelch circuit for receiving systems

Info

Publication number
GB1366471A
GB1366471A GB39073A GB39073A GB1366471A GB 1366471 A GB1366471 A GB 1366471A GB 39073 A GB39073 A GB 39073A GB 39073 A GB39073 A GB 39073A GB 1366471 A GB1366471 A GB 1366471A
Authority
GB
United Kingdom
Prior art keywords
output
amplifier
switch
band
gate
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.)
Expired
Application number
GB39073A
Other languages
English (en)
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.)
Motorola Solutions Inc
Original Assignee
Motorola Inc
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 Motorola Inc filed Critical Motorola Inc
Publication of GB1366471A publication Critical patent/GB1366471A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • H03G3/344—Muting responsive to the amount of noise (noise squelch)

Landscapes

  • Noise Elimination (AREA)
  • Transceivers (AREA)
  • Mobile Radio Communication Systems (AREA)
GB39073A 1972-01-17 1973-01-03 Selective calling squelch circuit for receiving systems Expired GB1366471A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US21810772A 1972-01-17 1972-01-17

Publications (1)

Publication Number Publication Date
GB1366471A true GB1366471A (en) 1974-09-11

Family

ID=22813776

Family Applications (1)

Application Number Title Priority Date Filing Date
GB39073A Expired GB1366471A (en) 1972-01-17 1973-01-03 Selective calling squelch circuit for receiving systems

Country Status (7)

Country Link
US (1) US3758860A (enExample)
JP (1) JPS5412005B2 (enExample)
CA (1) CA997829A (enExample)
DE (1) DE2302229C3 (enExample)
FR (1) FR2168454B1 (enExample)
GB (1) GB1366471A (enExample)
IL (1) IL41304A (enExample)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3846794A (en) * 1973-03-15 1974-11-05 Baker Ind Inc Alarm retransmission system
US3927376A (en) * 1974-12-23 1975-12-16 Rca Corp Speaker muting system
JPS605649Y2 (ja) * 1976-09-16 1985-02-21 株式会社福井村田製作所 送受信装置
US4233565A (en) * 1979-06-29 1980-11-11 Motorola, Inc. Method and apparatus for a PSK signal detector
US4342120A (en) * 1980-11-10 1982-07-27 The Bendix Corporation Squelch system for use in a multiple carrier AM communications systems receiver
US4430742A (en) 1981-11-20 1984-02-07 Motorola, Inc. Data muting method and apparatus for radio communications systems

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3496467A (en) * 1967-10-13 1970-02-17 Motorola Inc Automatic tone coded squelch circuit for radio communication system
JPS503887B1 (enExample) * 1968-08-05 1975-02-12

Also Published As

Publication number Publication date
US3758860A (en) 1973-09-11
DE2302229B2 (de) 1974-03-28
JPS4883711A (enExample) 1973-11-08
CA997829A (en) 1976-09-28
JPS5412005B2 (enExample) 1979-05-19
FR2168454B1 (enExample) 1981-09-25
DE2302229C3 (de) 1980-06-12
IL41304A0 (en) 1973-04-30
DE2302229A1 (de) 1973-08-02
FR2168454A1 (enExample) 1973-08-31
IL41304A (en) 1975-08-31

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee