AT136148B - Ultra short wave receiver. - Google Patents

Ultra short wave receiver.

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Publication number
AT136148B
AT136148B AT136148DA AT136148B AT 136148 B AT136148 B AT 136148B AT 136148D A AT136148D A AT 136148DA AT 136148 B AT136148 B AT 136148B
Authority
AT
Austria
Prior art keywords
wave receiver
short wave
ultra short
frequency
ultra
Prior art date
Application number
Other languages
German (de)
Original Assignee
Lorenz C Ag
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 Lorenz C Ag filed Critical Lorenz C Ag
Application granted granted Critical
Publication of AT136148B publication Critical patent/AT136148B/en

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Description

  

   <Desc/Clms Page number 1> 
 



    Ultrakurzwellenempfänger.   
 EMI1.1 
 

 <Desc/Clms Page number 2> 

 frequenzteiles bezeichnet. Aus der Figur ist ohne weiteres zu ersehen, dass der aufgenommene Sender in seiner Frequenz und damit in seinem Frequenzband schwanken kann und trotzdem immer noch vom   Zwisehenfrequenzempfänger   durchgelassen wird. Man wird z. B. bei einem normal modulierten Telephoniesender etwa den Durchlassbereich 100.000 Hertz wählen. Wenn gleichzeitig, wie bereits angegeben, durch indirekt geheizte Röhren und Glimmspannungsteiler die Frequenz des Überlagerers konstant gehalten wird, so ist ein einwandfreier Überlagerungsempfang auch   bei Ultrakurzwellen möglich.   



   Es ist selbstverständlich, dass der Erfindungsgedanke sich nicht nur auf die dargestellte Sehaltungsanordnung mit Fremdüberlagerung anwenden lässt, sondern auch bei solchen Anlagen, bei denen die Überlagerungsfrequenz in derselben Röhre erzeugt wird, in der der Überlagerungsvorgang der ankommenden mit der erzeugten Überlagerungsfrequenz stattfindet. Auch ist es gleichgültig, ob eine Frequenzheraufsetzung, von   der Trägerfrequenz   des empfangenen Senders aus gerechnet, oder eine-herabsetzung, wie dies allerdings meist der Fall ist, durchgeführt wird. 



   PATENT-ANSPRÜCHE   :  
1. Ultrakurzwellenempfänger, dadurch gekennzeichnet, dass die Empfangsanordnung, vorzugsweise die Schwingröhre, mit indirekt geheizten Kathoden ausgerüstet ist, die an einen Glimmspannungsteiler angeschlossen sind.



   <Desc / Clms Page number 1>
 



    Ultra short wave receiver.
 EMI1.1
 

 <Desc / Clms Page number 2>

 frequency part referred to. From the figure it can be readily seen that the recorded transmitter can fluctuate in its frequency and thus in its frequency band and is still let through by the dual frequency receiver. One will z. B. for a normally modulated telephone transmitter select about the passband 100,000 Hertz. If at the same time, as already stated, the frequency of the superimposer is kept constant by indirectly heated tubes and glow voltage divider, perfect superimposition reception is possible even with ultra-short waves.



   It goes without saying that the concept of the invention can be applied not only to the illustrated arrangement with external superimposition, but also to systems in which the superimposition frequency is generated in the same tube in which the superimposition of the incoming with the generated superimposition frequency takes place. It is also irrelevant whether a frequency increase, calculated from the carrier frequency of the received transmitter, or a decrease, as is usually the case, is carried out.



   PATENT CLAIMS:
1. Ultra-short wave receiver, characterized in that the receiving arrangement, preferably the oscillating tube, is equipped with indirectly heated cathodes which are connected to a glow voltage divider.

 

Claims (1)

2. Ultrakurzwellenempfänger nach Anspruch 1, dadurch gekennzeichnet, dass der Hochfrequenzteil der Empfangsanordnung selektiv ist, während der Durchlassbereich des Zwisehenfrequenzteils ein EMI2.1 EMI2.2 2. Ultra-short wave receiver according to claim 1, characterized in that the high-frequency part of the receiving arrangement is selective, while the pass band of the dual frequency part is a EMI2.1 EMI2.2
AT136148D 1931-01-31 1932-01-13 Ultra short wave receiver. AT136148B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE136148X 1931-01-31

Publications (1)

Publication Number Publication Date
AT136148B true AT136148B (en) 1934-01-10

Family

ID=5666266

Family Applications (1)

Application Number Title Priority Date Filing Date
AT136148D AT136148B (en) 1931-01-31 1932-01-13 Ultra short wave receiver.

Country Status (1)

Country Link
AT (1) AT136148B (en)

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