GB400687A - Improvements relating to wireless telegraph and telephone apparatus - Google Patents

Improvements relating to wireless telegraph and telephone apparatus

Info

Publication number
GB400687A
GB400687A GB1334832A GB1334832A GB400687A GB 400687 A GB400687 A GB 400687A GB 1334832 A GB1334832 A GB 1334832A GB 1334832 A GB1334832 A GB 1334832A GB 400687 A GB400687 A GB 400687A
Authority
GB
United Kingdom
Prior art keywords
coil
reaction
condenser
telephone apparatus
improvements relating
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
GB1334832A
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.)
WILLIAM HANNAFORD ANDREWS
Siemens Brothers and Co Ltd
Original Assignee
WILLIAM HANNAFORD ANDREWS
Siemens Brothers and Co Ltd
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 WILLIAM HANNAFORD ANDREWS, Siemens Brothers and Co Ltd filed Critical WILLIAM HANNAFORD ANDREWS
Priority to GB1334832A priority Critical patent/GB400687A/en
Publication of GB400687A publication Critical patent/GB400687A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/06—Receivers
    • H04B1/16—Circuits
    • H04B1/163—Special arrangements for the reduction of the damping of resonant circuits of receivers

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Toys (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
  • Circuits Of Receivers In General (AREA)

Abstract

400,687. Wireless receiving systems. SIEMENS BROS. & CO., Ltd., Caxton House, Tothill Street, REED, M., 25, Weigall Road, Lee, and ANDREWS, W. H., 16, Lassa Road, Eltham, all in London. May 9, 1932, No. 13348. [Class 40 (v).] In a wireless receiver, reaction control for one range of wavelengths is effected by a variable resistance R2, shunting the reaction coil L2, there being a fixed condenser C2 in series with the coil L2, while reaction control for another range of wavelengths is. effected by a variable condenser C1, in series with the reaction coil L1, a switch A allowing either reaction coil to be selected.- Preferably the condenser C1 and the resistance R2 are ganged, while the switch A may also change the tuning coil L.
GB1334832A 1932-05-09 1932-05-09 Improvements relating to wireless telegraph and telephone apparatus Expired GB400687A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1334832A GB400687A (en) 1932-05-09 1932-05-09 Improvements relating to wireless telegraph and telephone apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1334832A GB400687A (en) 1932-05-09 1932-05-09 Improvements relating to wireless telegraph and telephone apparatus

Publications (1)

Publication Number Publication Date
GB400687A true GB400687A (en) 1933-11-02

Family

ID=10021313

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1334832A Expired GB400687A (en) 1932-05-09 1932-05-09 Improvements relating to wireless telegraph and telephone apparatus

Country Status (1)

Country Link
GB (1) GB400687A (en)

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