GB230510A - Improvements relating to apparatus for the transmission of wireless signals - Google Patents

Improvements relating to apparatus for the transmission of wireless signals

Info

Publication number
GB230510A
GB230510A GB2330423A GB2330423A GB230510A GB 230510 A GB230510 A GB 230510A GB 2330423 A GB2330423 A GB 2330423A GB 2330423 A GB2330423 A GB 2330423A GB 230510 A GB230510 A GB 230510A
Authority
GB
United Kingdom
Prior art keywords
condensers
lead
receiving
earthed
shunted
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
GB2330423A
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.)
Individual
Original Assignee
Individual
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 NL15915D priority Critical patent/NL15915C/xx
Application filed by Individual filed Critical Individual
Priority to GB2330423A priority patent/GB230510A/en
Publication of GB230510A publication Critical patent/GB230510A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C1/00—Amplitude modulation
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
    • H03B5/00—Generation of oscillations using amplifier with regenerative feedback from output to input
    • H03B5/08—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance
    • H03B5/10—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being vacuum tube

Landscapes

  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)

Abstract

230,510. Shannon, D. S. B. Sept. 18, 1923. Combined transmitting and receiving arrangements; aerials and like radiating and receiving conductors.-Receiving and transmitting systems adapted to operate without the use of an extended aerial system, are characterized by the provision of two or more series condensers shunted across the main oscillatory circuit which takes the place of the ordinary aerial. Fig. 1 shows a combined receiving and transmitting installation. The main inductance 1 and capacity 8 are shunted by two condensers 13, 14, the earth lead 15 being connected as shown. The input circuit 17, 20 of the receiver is similarly shunted by the condensers 21, 22 the midpoint being earthed through a lead 23, as before. The two earthing points may be connected together through a lead 24 and condenser 25 in order to increase the effective size of both oscillatory circuits and to stabilize the system. Or the lower ends of the inductances may be connected by a lead 26 earthed at 27. The complete installation may be operated from a combined microphone and receiver mounted on a common holder as in an ordinary telephone head-set, the transmission and reception circuits being energized as required by means of a small switch located in the hand grip. Two shunting condensers 13, 14 or 21, 22 may be replaced by a single three-plate condenser the middle plate of which is earthed. Specification 217,259 is referred to.
GB2330423A 1923-09-18 1923-09-18 Improvements relating to apparatus for the transmission of wireless signals Expired GB230510A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
NL15915D NL15915C (en) 1923-09-18
GB2330423A GB230510A (en) 1923-09-18 1923-09-18 Improvements relating to apparatus for the transmission of wireless signals

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2330423A GB230510A (en) 1923-09-18 1923-09-18 Improvements relating to apparatus for the transmission of wireless signals

Publications (1)

Publication Number Publication Date
GB230510A true GB230510A (en) 1925-03-18

Family

ID=10193443

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2330423A Expired GB230510A (en) 1923-09-18 1923-09-18 Improvements relating to apparatus for the transmission of wireless signals

Country Status (2)

Country Link
GB (1) GB230510A (en)
NL (1) NL15915C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3265972A (en) * 1962-04-10 1966-08-09 Curry Paul Underwater electric field communication system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3265972A (en) * 1962-04-10 1966-08-09 Curry Paul Underwater electric field communication system

Also Published As

Publication number Publication date
NL15915C (en)

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