AT152132B - Intermediate frequency receiver with calibrated scale for receiving non-sounding telegraphy. - Google Patents

Intermediate frequency receiver with calibrated scale for receiving non-sounding telegraphy.

Info

Publication number
AT152132B
AT152132B AT152132DA AT152132B AT 152132 B AT152132 B AT 152132B AT 152132D A AT152132D A AT 152132DA AT 152132 B AT152132 B AT 152132B
Authority
AT
Austria
Prior art keywords
telegraphy
sounding
intermediate frequency
frequency receiver
calibrated scale
Prior art date
Application number
Other languages
German (de)
Original Assignee
Telefunken 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
Application filed by Telefunken Gmbh filed Critical Telefunken Gmbh
Application granted granted Critical
Publication of AT152132B publication Critical patent/AT152132B/en

Links

Landscapes

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

Description

  

   <Desc/Clms Page number 1> 
 
 EMI1.1 
 
 EMI1.2 
 

 <Desc/Clms Page number 2> 

 Detektorstufe D, zweiter Überlagerer Ü2 und Endstufe   B   als Beispiele angenommen. Der zweite Überlagerer Ü2 ist frequenzstabilisiert. Die Oberwellen dieses Überlagerers können zwecks Eichung über den Schalter S an den Eingang des Empfängers geleitet werden. Die Ankopplung kann auf beliebige Weise kapazitiv oder induktiv erfolgen. Die Nacheichung geschieht durch Bedienen eines zum Schwingungskreis des Überlagerers parallel geschalteten kleinen Drehkondensators. 



   Der Empfänger kann natürlich auch mit einer   Umschaltmöglichkeit   zum Empfang tönender Telegraphie oder Telephonie versehen sein.



   <Desc / Clms Page number 1>
 
 EMI1.1
 
 EMI1.2
 

 <Desc / Clms Page number 2>

 Detector stage D, second superimposer Ü2 and output stage B assumed as examples. The second superimposed U2 is frequency stabilized. The harmonics of this superimposer can be passed to the input of the receiver via the switch S for calibration. The coupling can be done capacitively or inductively in any way. Recalibration is carried out by operating a small variable capacitor connected in parallel to the oscillating circuit of the superimposer.



   The receiver can of course also be provided with a switchover facility for receiving sounding telegraphy or telephony.

Claims (1)

PATENT-ANSPRUCH : Zwischenfrequenzempfänger mit geeichter Skala zum Empfang nicht tönender Telegraphie, dadurch gekennzeichnet, dass der zweite Überlagerer frequenzstabilisiert ist und Mittel vorgesehen sind, um die erzeugten Oberwellen zwecks Nacheichung des ersten Überlagerers an den Eingang des Empfängers zu bringen. EMI2.1 PATENT CLAIM: Intermediate frequency receiver with calibrated scale for receiving non-sounding telegraphy, characterized in that the second superimposer is frequency-stabilized and means are provided to bring the generated harmonics to the input of the receiver for the purpose of recalibrating the first superimposer. EMI2.1
AT152132D 1936-04-29 1937-04-26 Intermediate frequency receiver with calibrated scale for receiving non-sounding telegraphy. AT152132B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE152132X 1936-04-29

Publications (1)

Publication Number Publication Date
AT152132B true AT152132B (en) 1937-12-27

Family

ID=5674897

Family Applications (1)

Application Number Title Priority Date Filing Date
AT152132D AT152132B (en) 1936-04-29 1937-04-26 Intermediate frequency receiver with calibrated scale for receiving non-sounding telegraphy.

Country Status (1)

Country Link
AT (1) AT152132B (en)

Similar Documents

Publication Publication Date Title
AT152132B (en) Intermediate frequency receiver with calibrated scale for receiving non-sounding telegraphy.
DE872590C (en) Method for measuring synchronization errors in superposition receivers
GB718959A (en) Improvements in or relating to circuit-arrangements for the frequency changing of high-frequency oscillations
AT114686B (en) Generator circuit to suppress harmonics.
DE624090C (en) Receiving circuit in which the wave to be received is superimposed on a locally generated wave and the sum frequency of both is used
AT215479B (en) Arrangement for the low-noise amplification of short and very short electromagnetic waves
GB465030A (en) Improvements in thermionic amplifiers
AT130832B (en) Transformer for several wavebands.
DE728537C (en) Neutralized high frequency stage
DE387055C (en) Device for increased reception of damped and unattenuated vibrations
US1706030A (en) Transferring means for electromagnetic wave energy
DE554707C (en) Superheterodyne receiver
AT66796B (en) Transmission arrangement for underwater streamline telegraphy.
AT89942B (en) Device for signaling with high frequency waves.
AT97618B (en) Receiver device for high frequency vibrations for the purpose of wireless telegraphy and telephony.
AT93370B (en) Device for the prevention of disturbances in telegraph lines with alternating current operation.
AT103168B (en) Receiving arrangement for electrical wave signals.
AT94334B (en) Switching method for generating vibrations with vacuum tubes.
DE939639C (en) Circuit arrangement for suppressing undesired harmonic frequencies
AT142041B (en) Feedback arrangement for wave ranges with frequencies of different magnitudes.
DE355853C (en) Cathode tube generator circuit
GB413973A (en) Improvements in or relating to short wave thermionic valve transmitter arrangements
DE630595C (en) Feedback arrangement for receivers with very different wave ranges in the order of magnitude
DE520722C (en) Device for sensing high-frequency vibrations
AT154792B (en) High or intermediate frequency amplifier.