US1680207A - Radio signaling system - Google Patents

Radio signaling system Download PDF

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Publication number
US1680207A
US1680207A US99283A US9928316A US1680207A US 1680207 A US1680207 A US 1680207A US 99283 A US99283 A US 99283A US 9928316 A US9928316 A US 9928316A US 1680207 A US1680207 A US 1680207A
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US
United States
Prior art keywords
electrodes
connection
condenser
inductance
condensers
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 - Lifetime
Application number
US99283A
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English (en)
Inventor
Forest Lee De
Charles V Logwood
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.)
DE FOREST RADIO TELEPHONE AND TELEGRAPH Co
FOREST RADIO TELEPHONE AND TEL
Original Assignee
FOREST RADIO TELEPHONE AND TEL
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 GB107001D priority Critical patent/GB107001A/en
Application filed by FOREST RADIO TELEPHONE AND TEL filed Critical FOREST RADIO TELEPHONE AND TEL
Priority to US99283A priority patent/US1680207A/en
Priority to DEF50063D priority patent/DE436305C/de
Application granted granted Critical
Publication of US1680207A publication Critical patent/US1680207A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/02—Amplitude-modulated carrier systems, e.g. using on-off keying; Single sideband or vestigial sideband modulation
    • H04L27/04—Modulator circuits; Transmitter circuits

Definitions

  • This invention relates to radio signaling systems.
  • the object of the invention 1s to provide a radio signaling system which is simple and 6 efficient.
  • a further object of the invention is to provide a method and circuits for producing, radiatin or transmitting and controll ng in accor ance with signals to be sent, h 1gh 1 frequency continuous oscillating electrical waves.
  • the invention consists substantially 1n the circuit arrangements, location and relat1ve arran ement of parts all as will be more fully ereinafter set forth, as shown by the accompanying drawing, and finally polnted out in the appended claims.
  • Fig. 4 similarly shows our invention as applied to a receiving system.
  • Fig. 5 is a detailed modified circuit arrangement employed in connection with the transmitter 26, Fig. 2;
  • Fig. 1 we show an oscillion transmitting system wherein' 9 is the oscillion bulb containing the hot or filament electrode 12 and the two cold electrodes 10, 11, preferably a plate and a. grid, respectively, as shown. so Reference numeral 1 designates the antenna which is connected to earth at 5, through the loading inductance 3 and the series condenser 4. The grid electrode 11 is connected to one end of the antenna earth loading coil 3,
  • the filament electrode 12 is heated by the current source 13, and the plate electrode is connected to the filament through the impedance coil 15 and the. current source 14 in the usual manner, asshown.
  • Fig. 2 embodies essentially the same circuits as Fig. 1, with a. condenser 16, replacing the antenna earth capacity. If the system is to be used for telephony a convenient means for controlling the high frequency by means of the voice is to insert a microphone 26 in the connection between the two series condensers and the hot electrode of the oscillion. We find that it is an advantage to connect the condenser across the microphone 26 as clearer articulation at the receiver is secured thereby.
  • the oscillating circuit connecting the two cold electrodes of the oscillion is also connected at some point, to the hot electrode, preferably at some point 2 on the inductance 3, instead of between the two series condensers 16, 4;, as shown in Fig. 2.
  • the condensers is omitted, but the stopping condenser 7 we find to be necessary in the tap lead to the filament of the oscillion to avoid short circuiting the source of B voltage 14:.
  • the condenser 16 may here represent the antenna earth capacity.
  • Fig. 4 shows the same circuit as in Fig. 1 adapted to a receiving system instead of a generating or transmitting system.
  • a signal indicating device such as'the receiver 17 is substituted for the impedance coil 15 of the transmitter system, and a battery is preferably used in place of the direct 'current generator, as indicated.
  • a choke coil 22, preferably of the spiral pan cake, form is inserted between the telephone receiver 17 and the electrode 10 to prevent any hi l1 frequency oscillation from traversing t e telephone or B circuit 12, 14:, 17 10.
  • a high impedance or leak coil or path 23 is preferably connected across the condenser 4, as shown, to lead off static accumulations from the antenna earth system. It is obvious that this feature may also be applied to the condenser 4 in Fig. 1.
  • an evacuated vessel containing two cold and one hot electrodes, a circuit including an inductance connecting two of said electrodes, a condenser included in a second circuit in series with said inductance, and a connection between one terminal of said condenser and the other of said electrodes, controlling device included in tion.
  • an evacuated vessel containing two cold and one hot electrodes, an oscillating circuit comprising an inductance and a plurality of said connec- I condensers in series connected across the terminals thereof, connected across two of said electrodes and a separate connection between all of said condensers and the other of said electrodes, and a signal controlling device included in said connection.
  • an evacuated vessel containing two cold and one hot electrodes, a circuit including an inductance connecting the two cold electrodes, a condenser included in a second circuit in series with said inductance and a connection between one terminal of said condenser and said hot electrode, and a signal controlling device included in, said connection.
  • an evacuated vessel containing two cold and one hot electrodes, an oscillating circuit comprising an inductance and a plurality of condensers in series connected across the terand a signal minals thereof, connected across said cold electrodes, and a separate connection between all of said condensers and said hot electrode,
  • an evacuated vessel containing two cold and one hot electrodes, a circuit including an inductance connecting two of said electrodes, a connection from said inductance to the other of said electrodes, and a plurality of condensers included in said connection.
  • an evacuated vessel containing two col d and one hot electrodes, an oscillating circuit comprising an inductance and a plurality of condensers in series connected across the terminals thereof, connected across two of said electrodes and a separate connection between all of said condensers and the other of said electrodes and a condenser included in said connection.
  • evacuated vessel containing two cold and one hot electrodes, a circuit including an inductance connecting two cold electrodes, a connection from said inductance to said hot electrode, and a plurality of condensers included in said connection.
  • an evacuated vessel containing two cold and one hot electrodes, an oscillating circuit comprising an inductance and a plurality of condensers-in series connected across the terminals thereof, connected across said cold electrodes, and a separate connection between all of said condensers and said hot electrode and a. condenser included in said connection.
  • an evacuated vessel containing two cold and one hot electrodes, an oscillating circuit compris- -ing an inductance and two condensers in iso condensers and the other of said electrodes and a condenser included in said connection.
  • an evacuated vessel containing two cold and one hot electrodes an oscillating circuit comprising an inductance and two condensers in series connected across the terminals thereof, connected across said, cold electrodes, and a separate connection between both of said condensers and said hot electrode and a condenser included in said connection.
  • an evacuated vessel containing two cold and one hot electrodes, a circuit including an inductance connecting two of said electrodes and a conductive connection including a condenser extending between said circuit and the other of said electrodes, and a second cir- LEE ma FOREST.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Transmitters (AREA)
  • Details Of Aerials (AREA)
  • Details Of Television Scanning (AREA)
US99283A 1916-05-23 1916-05-23 Radio signaling system Expired - Lifetime US1680207A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB107001D GB107001A (enrdf_load_stackoverflow) 1916-05-23
US99283A US1680207A (en) 1916-05-23 1916-05-23 Radio signaling system
DEF50063D DE436305C (de) 1916-05-23 1921-08-28 Schaltungsanordnung zur Erzeugung und Beeinflussung sowie zum Empfang elektrischer Schwingungen mittels Elektronenroehren

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US99283A US1680207A (en) 1916-05-23 1916-05-23 Radio signaling system

Publications (1)

Publication Number Publication Date
US1680207A true US1680207A (en) 1928-08-07

Family

ID=22274180

Family Applications (1)

Application Number Title Priority Date Filing Date
US99283A Expired - Lifetime US1680207A (en) 1916-05-23 1916-05-23 Radio signaling system

Country Status (3)

Country Link
US (1) US1680207A (enrdf_load_stackoverflow)
DE (1) DE436305C (enrdf_load_stackoverflow)
GB (1) GB107001A (enrdf_load_stackoverflow)

Also Published As

Publication number Publication date
GB107001A (enrdf_load_stackoverflow)
DE436305C (de) 1926-10-30

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