GB401791A - Improvements in and relating to wireless receiving apparatus and circuits therefor - Google Patents

Improvements in and relating to wireless receiving apparatus and circuits therefor

Info

Publication number
GB401791A
GB401791A GB1783532A GB1783532A GB401791A GB 401791 A GB401791 A GB 401791A GB 1783532 A GB1783532 A GB 1783532A GB 1783532 A GB1783532 A GB 1783532A GB 401791 A GB401791 A GB 401791A
Authority
GB
United Kingdom
Prior art keywords
relay
valve
oscillator
quenching
rectifier
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
GB1783532A
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.)
FRANK THISTLETHWAITE
Original Assignee
FRANK THISTLETHWAITE
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 FRANK THISTLETHWAITE filed Critical FRANK THISTLETHWAITE
Priority to GB1783532A priority Critical patent/GB401791A/en
Publication of GB401791A publication Critical patent/GB401791A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/02—Terminal devices
    • H04W88/022—Selective call receivers
    • H04W88/025—Selective call decoders
    • H04W88/027—Selective call decoders using frequency address codes

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

401,791. Valve circuits for wireless reception. THISTLETHWAITE, F., 19, Durham Terrace, Bradford, Yorkshire. June 24, 1932, No. 17835. [Class 40 (v).] In a super-regenerative receiver, the quenching frequency is modulated on the carrier wave and used to actuate a relay. The oscillating detector VI is quenched by the oscillations of an oscillator V2 introduced into the grid circuit of valve V1, so that a received carrier wave is modulated by the oscillator V2, and after amplification by valves V3, V4 is rectified at R, the resulting current causing a relay R1 to operate a calling signal lamp S. A switch A allows the earphones P to replace the rectifier R and lamp S. A variable resistance B across a low frequency inter-valve transformer acts as a volume control and also bypasses the note due to the quenching oscillator V2. This resistance is thrown out of circuit when the relay is operative. A rectifier R2 across the signal lamp prevents arcing at the relay contacts. A low pass filter L prevents the relay being actuated by atmospherics. The quenching frequency may be developed by the valve VI.
GB1783532A 1932-06-24 1932-06-24 Improvements in and relating to wireless receiving apparatus and circuits therefor Expired GB401791A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1783532A GB401791A (en) 1932-06-24 1932-06-24 Improvements in and relating to wireless receiving apparatus and circuits therefor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1783532A GB401791A (en) 1932-06-24 1932-06-24 Improvements in and relating to wireless receiving apparatus and circuits therefor

Publications (1)

Publication Number Publication Date
GB401791A true GB401791A (en) 1933-11-23

Family

ID=10102046

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1783532A Expired GB401791A (en) 1932-06-24 1932-06-24 Improvements in and relating to wireless receiving apparatus and circuits therefor

Country Status (1)

Country Link
GB (1) GB401791A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2459105A (en) * 1941-04-12 1949-01-11 Farnsworth Res Corp Traffic signaling system
US2584132A (en) * 1944-01-04 1952-02-05 Robert A Kirkman Radio receiving system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2459105A (en) * 1941-04-12 1949-01-11 Farnsworth Res Corp Traffic signaling system
US2584132A (en) * 1944-01-04 1952-02-05 Robert A Kirkman Radio receiving system

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