DE750716C - Circuit arrangement for the reception of wireless messages and the simultaneous recording of a special signal (emergency call signal or other message) on another wave - Google Patents

Circuit arrangement for the reception of wireless messages and the simultaneous recording of a special signal (emergency call signal or other message) on another wave

Info

Publication number
DE750716C
DE750716C DE1936750716D DE750716DD DE750716C DE 750716 C DE750716 C DE 750716C DE 1936750716 D DE1936750716 D DE 1936750716D DE 750716D D DE750716D D DE 750716DD DE 750716 C DE750716 C DE 750716C
Authority
DE
Germany
Prior art keywords
intermediate frequency
signal
reception
antenna
circuit arrangement
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
DE1936750716D
Other languages
German (de)
Inventor
Ernst Dr-Ing Kramar
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 filed Critical
Application granted granted Critical
Publication of DE750716C publication Critical patent/DE750716C/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L15/00—Apparatus or local circuits for transmitting or receiving dot-and-dash codes, e.g. Morse code
    • H04L15/24—Apparatus or circuits at the receiving end
    • H04L15/26—Apparatus or circuits at the receiving end operating only on reception of predetermined code signals, e.g. distress signals, party-line call signals
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61G—COUPLINGS; DRAUGHT AND BUFFING APPLIANCES
    • B61G11/00—Buffers
    • B61G11/14—Buffers absorbing shocks by mechanical friction action; Combinations of mechanical shock-absorbers and springs
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
    • 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
    • H04B1/26—Circuits for superheterodyne receivers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J1/00—Frequency-division multiplex systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mechanical Engineering (AREA)
  • Transmitters (AREA)
  • Circuits Of Receivers In General (AREA)

Description

Die Erfindung betrifft eine Schaltungsanordnung· für den Empfang drahtloser Nachrichten und die gleichzeitige Aufnahme eines besonderen Signals (Notrufsignals oder weiterer Nachricht) auf anderer Welle.The invention relates to a circuit arrangement for receiving wireless messages and the simultaneous recording of a special signal (emergency signal or other Message) on another wave.

Als Zwischenfrequenz wird beim Überlagerungsempfang im allgemeinen eine konstante. Frequenz verwandt, beispielsweise bei Kurzwellenempfängern für die Aufnahme der 50-m-In the case of heterodyne reception, the intermediate frequency is generally a constant one. Frequency, for example with shortwave receivers for recording the 50 m

to Wellen eine Welle von einigen room. Es ist bekannt, bei solchen Empfängern den Zwischenfrequenzteü seinerseits zum Empfang im Mittelwellenbereich zu benutzen, d. h. eine Umschaltmöglichkeit von kurzen auf lange Wellen dadurch zu ermöglichen, daß bei Kurzwellenempfang eine Überlagerungsschaltung und bei Langwellenempfang der Zwischenfrequenzteil des Kurzwellenempfängers benutzt wird. Weiterhin ist es bekannt, eine Anzahl von Empfangsmitteln, z. B. eine Antenne und/ oder Verstärker, gemeinschaftlich zum gleichzeitigen Empfang mehrerer Nachrichten zu verwenden.to waves a wave from some room. It is known to use the intermediate frequency part in such receivers in turn to use for reception in the medium wave range, d. H. an option to switch from short to long To enable waves by having a superimposing circuit for shortwave reception and the intermediate frequency part of the shortwave receiver is used for long wave reception will. Furthermore, it is known to have a number of receiving means, e.g. B. an antenna and / or amplifier, jointly to receive several messages at the same time use.

Die Erfindung ist dadurch gekennzeichnet, daß zum Empfang der Nachrichten ein über den gewünschten Empfangswellenbereich abstimmbarer Überlagerungsempfänger verwendet wird, dessen Zwischenfrequenz so gewählt ist, daß sie mit der außerhalb des Empfangswellenbereiches liegenden Trägerfrequenz des besonderen Signals übereinstimmt und daß die Antenne sowohl mit dem Eingangskreis des Überlagerungsteils als auch mit dem Zwischenfrequenzteil verbunden ist.The invention is characterized in that an over to receive the messages the desired reception wave range tunable heterodyne receiver used is, whose intermediate frequency is chosen so that it is outside of the reception wave range lying carrier frequency of the particular signal and that the antenna corresponds to both the input circuit of the superposition part and is connected to the intermediate frequency part.

Die Abbildung zeigt die erfindungsgemäße Schaltungsanordnung. Ein Kurzwellenempfänger, der mit Antennen! verbunden ist, besteht aus dem Überlagerungsteil 1, in dem eine hochfrequente Verstärkung und Überlagerung der empfangenen Frequenz erfolgt, und einem Zwischenfrequenzteil 2, in dem eine Verstärkung und Gleichrichtung der erzeugten Zwischenfrequenz vorgenommen wird. Die Zwischenfrequenz wird nun auf die Frequenz verlegt, für die eine weitere Empfangsbereitschaft bestehen soll, und, die Antenne ^i über einThe figure shows the circuit arrangement according to the invention. A shortwave receiver the one with antennas! is connected, exists from the superimposition part 1, in which a high-frequency amplification and superposition the received frequency takes place, and an intermediate frequency part 2, in which an amplification and rectification of the generated intermediate frequency is carried out. The intermediate frequency is now relocated to the frequency for which a further readiness to receive shall exist, and, the antenna ^ i about a

Claims (3)

Sperrglied 3 an-xJen_Zwischenfrequenzteil derart angeschlossen, daß eine Rückkopplung für die empfangenen kurzen Wellen verhindert wird. Die Sperrung kann auch dadurch erfolgen, daß die Anschaltung der Antenne hinter der ersten Zwischenfrequenzstufe erfolgt. Es ist also bei Kurzwellenempfang gleichzeitig die Empfangsbereitschäft für die fest eingestellte Zwischenfrequenz vorhanden. Wenn ein Notruf auf irgendeiner Stelle erfolgt, kann der Bedienende den Kurzwellenüberlagerungsteil abschalten und das Notrufsignal aufnehmen.Blocking element 3 at-xJen_Zwischenfrequenzteil such connected that prevents feedback for the short waves received will. The blocking can also take place in that the antenna is connected after the first intermediate frequency stage. So with shortwave reception it is at the same time the readiness to receive Fixed intermediate frequency available. If an emergency call is made anywhere, the operator can switch off the shortwave superimposition and the emergency signal take up. lP Patentansprüche: lP claims: i. Schaltungsanordnung für den Empfang drahtloser Nachrichten und die gleichzeitige Aufnahme eines besonderen Signals (Notrufsignals oder weiterer Nachrieht) auf anderer Welle, dadurch gekennzeichnet, daß zum Empfang der Nachrichten ein über den gewünschten Empfangswellenbereich abstimmbarer Überlagerungsempfänger verwendet wird, dessen Zwischenfrequenz so gewählt ist, daß sie mit der außerhalb des Enpfangstwellenbereiches liegenden Trägerfrequenz des besonderen Signals übereinstimmt und daß die Antenne sowohl'mit dem Eingangskreis des Überlagerungsteils als auch mit dem Zwischenfrequenzteii verbunden ist.i. Circuitry for receiving wireless messages and the Simultaneous recording of a special signal (emergency call signal or other messages) on another wave, characterized in that for receiving the messages, an over the desired receiving wave range tunable heterodyne receiver is used, the intermediate frequency is chosen so that it with the carrier frequency of the particular one lying outside of the receiving wave range Signal coincides and that the antenna both'with the input circuit of the superposition part as well as the intermediate frequency part is connected. 2. Schaltungsanordnung nach Anspruch i, dadurch gekennzeichnet, daß in der Verbindung zwischen Antenne und Zwischenfrequenzteii ein Sperrglied für die mittels Überlagerungsempfangs aufgenommenen Wellen, z. B. Kurzwellen, vorgesehen ist.2. Circuit arrangement according to claim i, characterized in that in the connection between antenna and intermediate frequency part a blocking element for the recorded by means of superimposition reception Waves, e.g. B. short waves, is provided. 3. Schaltungsanordnung nach Anspruch i, dadurch gekennzeichnet, daß die Anschaltung der Antenne an den Zwischenfrequenzteii hinter der ersten Zwischenfrequenzstufe erfolgt.3. Circuit arrangement according to claim i, characterized in that the Connection of the antenna to the intermediate frequency section behind the first intermediate frequency stage he follows. Zur Abgrenzung des Anmeldungsgegen-Standes vom Stand der Technik sind im Erteilungsverfahren folgende Druckschriften in Betracht gezogen worden:To differentiate the subject matter of the application from the state of the art are in the granting procedure the following publications have been considered: deutsche Patentschriften Nr. 392 979,German patent specification No. 392 979, 600 193,-600 193.00 schweizerische Patentschrift .. Nr. 169877:Swiss patent specification .. No. 169877: französische - .. - 699825;French - .. - 699825; Funktechn. Vorwärts (1935), 5. Jahrgang. Heft 22, S. 706 bis 710.Radio techn. Vorwärts (1935), 5th year. Issue 22, pp. 706 to 710. Hierzu 1 Blatt Zeichnungen1 sheet of drawings
DE1936750716D 1936-10-07 1936-10-07 Circuit arrangement for the reception of wireless messages and the simultaneous recording of a special signal (emergency call signal or other message) on another wave Expired DE750716C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE750716T 1936-10-07

Publications (1)

Publication Number Publication Date
DE750716C true DE750716C (en) 1945-01-26

Family

ID=6544118

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1936750716D Expired DE750716C (en) 1936-10-07 1936-10-07 Circuit arrangement for the reception of wireless messages and the simultaneous recording of a special signal (emergency call signal or other message) on another wave

Country Status (6)

Country Link
US (1) US2195888A (en)
BE (1) BE382543A (en)
DE (1) DE750716C (en)
FR (1) FR827205A (en)
GB (1) GB490485A (en)
NL (1) NL47611C (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE764713C (en) * 1938-11-12 1953-06-08 Aeg Method for transmitting a call signal to a receiver for frequency-modulated oscillations that is already connected to another transmitter

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE392979C (en) * 1922-06-25 1924-03-31 Erwin Kindler Transmitter and receiver circuit for multiple telegraphy and telephony on one wave
FR699825A (en) * 1930-07-18 1931-02-20 Device for adapting a radio receiver to receiving waves that it cannot receive directly
CH169877A (en) * 1933-09-07 1934-06-15 Komet Radio A G Additional device for radio receivers to expand the waveband to include long waves.
DE600193C (en) * 1932-07-02 1935-09-28 Telefunken Gmbh Device for displaying both the flight target direction by means of reception on longer waves and the landing field strength by means of reception of ultrashort waves

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE392979C (en) * 1922-06-25 1924-03-31 Erwin Kindler Transmitter and receiver circuit for multiple telegraphy and telephony on one wave
FR699825A (en) * 1930-07-18 1931-02-20 Device for adapting a radio receiver to receiving waves that it cannot receive directly
DE600193C (en) * 1932-07-02 1935-09-28 Telefunken Gmbh Device for displaying both the flight target direction by means of reception on longer waves and the landing field strength by means of reception of ultrashort waves
CH169877A (en) * 1933-09-07 1934-06-15 Komet Radio A G Additional device for radio receivers to expand the waveband to include long waves.

Also Published As

Publication number Publication date
FR827205A (en) 1938-04-21
NL47611C (en) 1940-01-15
US2195888A (en) 1940-04-02
GB490485A (en) 1938-08-16
BE382543A (en) 1931-10-31

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