GB369198A - Improvements in wireless telephone system - Google Patents

Improvements in wireless telephone system

Info

Publication number
GB369198A
GB369198A GB33298/30A GB3329830A GB369198A GB 369198 A GB369198 A GB 369198A GB 33298/30 A GB33298/30 A GB 33298/30A GB 3329830 A GB3329830 A GB 3329830A GB 369198 A GB369198 A GB 369198A
Authority
GB
United Kingdom
Prior art keywords
class
aerial
signalling
oscillatory circuit
amplifier
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
GB33298/30A
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.)
SIGNAL FUNK GmbH
Original Assignee
SIGNAL FUNK GmbH
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
Priority to FR703804D priority Critical patent/FR703804A/en
Priority to FR704443D priority patent/FR704443A/en
Application filed by SIGNAL FUNK GmbH filed Critical SIGNAL FUNK GmbH
Priority to GB33298/30A priority patent/GB369198A/en
Priority to CH154969D priority patent/CH154969A/en
Publication of GB369198A publication Critical patent/GB369198A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Transmitters (AREA)
  • Circuit For Audible Band Transducer (AREA)

Abstract

369,198. Inductive signalling. TRIGGS, W. W., 57, Lincoln's Inn Fields, London.-(Signal-Funk Ges. ; 2, III Hagen, Essen, Germany.) Nov. 5, 1930, No. 33298. Drawings to Specification. [Class 40 (v).] Communication is effected between a stationary and a movable station, by the radiation of waves of speech frequency from an open oscillatory circuit and reception by a further open oscillatory circuit. The two circuits may comprise aerials arranged parallel to one another. A valve amplifier may be interposed between the microphone and aerial or aerial and telephone instrument and a combined transmitter and receiver may be provided with switching to enable the amplifier to be used for either purpose. Specification 154,537, [Class 40 (v), Wireless signalling &c.], is referred to. Reference has been directed by the Comptroller to Specification 223,630, [Class 40 (v), Wireless signalling &c.].
GB33298/30A 1929-11-11 1930-11-05 Improvements in wireless telephone system Expired GB369198A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
FR703804D FR703804A (en) 1929-11-11 1930-10-17 Short range wireless telephony method
FR704443D FR704443A (en) 1929-11-11 1930-10-28 wireless transmission and reception of low frequency oscillations
GB33298/30A GB369198A (en) 1929-11-11 1930-11-05 Improvements in wireless telephone system
CH154969D CH154969A (en) 1929-11-11 1931-06-01 Arrangement for wireless telephoning and signaling without a carrier frequency.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE704443X 1929-11-11
FR703804T 1930-10-17
GB33298/30A GB369198A (en) 1929-11-11 1930-11-05 Improvements in wireless telephone system
CH154969T 1931-06-01

Publications (1)

Publication Number Publication Date
GB369198A true GB369198A (en) 1932-03-07

Family

ID=49714110

Family Applications (1)

Application Number Title Priority Date Filing Date
GB33298/30A Expired GB369198A (en) 1929-11-11 1930-11-05 Improvements in wireless telephone system

Country Status (3)

Country Link
CH (1) CH154969A (en)
FR (2) FR703804A (en)
GB (1) GB369198A (en)

Also Published As

Publication number Publication date
CH154969A (en) 1932-05-31
FR704443A (en) 1931-05-20
FR703804A (en) 1931-05-06

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