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Rundfunkprüfempfänger MRK31

Rundfunkprüfempfänger MRK31; Kathrein; Rosenheim (ID = 774409) Equipment Rundfunkprüfempfänger MRK31; Kathrein; Rosenheim (ID = 1739932) Equipment
Rundfunkprüfempfänger MRK31; Kathrein; Rosenheim (ID = 774552) Equipment Rundfunkprüfempfänger MRK31; Kathrein; Rosenheim (ID = 1253157) Equipment
Rundfunkprüfempfänger MRK31; Kathrein; Rosenheim (ID = 1253158) Equipment Rundfunkprüfempfänger MRK31; Kathrein; Rosenheim (ID = 1253159) Equipment
Rundfunkprüfempfänger MRK31; Kathrein; Rosenheim (ID = 1253160) Equipment Rundfunkprüfempfänger MRK31; Kathrein; Rosenheim (ID = 1253162) Equipment
Rundfunkprüfempfänger MRK31; Kathrein; Rosenheim (ID = 1253163) Equipment Rundfunkprüfempfänger MRK31; Kathrein; Rosenheim (ID = 1253164) Equipment
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Rundfunkprüfempfänger MRK31; Kathrein; Rosenheim (ID = 774409) Equipment
Kathrein; Rosenheim: Rundfunkprüfempfänger MRK31 [Equipment] ID = 774409 933x720
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For model Rundfunkprüfempfänger MRK31, Kathrein; Rosenheim
 
Country:  Germany
Manufacturer / Brand:  Kathrein; Rosenheim
Year: 1976 ? Category: Service- or Lab Equipment
Semiconductors (the count is only for transistors) Semiconductors present.
schematic requested
Main principle Superheterodyne (common)
Wave bands Broadcast, Long Wave, Short Wave plus FM or UHF.
Details
Power type and voltage Storage and/or dry batteries / 12 Volt
Loudspeaker Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil)
Power out
from Radiomuseum.org Model: Rundfunkprüfempfänger MRK31 - Kathrein; Rosenheim
Material Metal case
Shape Portable set > 8 inch (also usable without mains)
Notes

Feldstärkeprüfgerät/Antennenmessgerät mit Pegelanzeige, schaltbarer Abschwächer, integriertes Autoradio Blaupunkt Frankfurt Stereo ASU dient als eigentlicher Empfänger.

Model page created by a member from A. See "Data change" for further contributors.



All listed radios etc. from Kathrein; Rosenheim
Here you find 368 models, 358 with images and 309 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.



 


Forum contributions about this model
Kathrein; Rosenheim: Rundfunkprüfempfänger MRK31
Threads: 1 | Posts: 2
Hits: 232     Replies: 1
kathrein: MRK31 s/n 1603
Georges Van Campenhout
19.May.20
  1

Dear Forum members,

my set, s/n 1603 does not have the digital frequency meter (MZE01). Perhaps this is a cheaper version?

 

Unfortunately, I cannot identify the Blaupunkt car radio that has been used. There is no label present with type- and serial number.

This is certainly not a standard radio: at the rear there is a gold plated RF connector, probably to connect it to the frequency meter, and furthermore 3 additional cables (blue, grey and green).

At the left side (see second picture) there is a black shielded cable, connected to the pcb at the rear of the 100 µA meter.

The radio itself is defective...

Best regards

 

 

Attachments

Heiner Herrmann
21.May.20
  2

Kathrein model is listed here, please look at the description. The inbuilt radio is a blaupunkt, frankfurt stereo asu, this radio and various brandings of it, is also listed here. Just search "frankfurt stereo asu". The modifications are made by kathrein, feeding out the avr-voltage and amplification of that voltage by a logarithmic amp. The oscillator signal is fed towards the counter module.

The 3 extra wires are for: stereo lamp, switching of AFC and ASU( impulse interference rejection).

The proper front scale photo you will find at site "frankfurt stereo asu" here in rm.org on right hand side, additional photos. "Blaupunkt" left, bottom corner, "Stereo" right-hand bottom corner. ASU on top of radio housing, signal-red paper print "ASU".

 

 
Kathrein; Rosenheim: Rundfunkprüfempfänger MRK31
End of forum contributions about this model

  
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