Moderne FM handheld portables
DH4PY

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      PRT-37
SEM 52 A
      SEM-52N

 

 

 

 

 

  SEM 52-A

is a German handheld radio of low power with six channels. It was developed to replace the outdated PRC-6/6. Its strange looking headset makes it an almost hands free radio ( only the PTT must be pushed. ) Besides, all the surrounding noise can be heard. Though the headset was developed for the army, the soldiers never grew accustomed to it. Thus SEM52-A was replaced after a rather short period by SEM-52S.
(SEM-53 with digital display was developed but not accepted).
 
It can co-operate with: RT-68, RT-70, RT-110, PRC-6/6, PRC-10, FSE-38-58, SEM-25, SEM-35, SEM-52S, SEM 70, SEM 80, SEM 90.
 

  • A very detailed description of the SEM-52A can be found in
    Alan Tasker's article

    Frequency range:

    47.0... 56.975 MHz

     

    Technical data:
    Mass + weights:
    Radio: 180 x 85 x 36 mm; 0.65 kg.
    Transmitting power
    0.2 Watts, FM
    Type of traffic:
    Intercommunication
    Frequency selection:
    6 channels from 400 possible adjustable. For channels 1 to 4 there are 24 removable trays;  4 trays are in a container.
    Spot frequencies:
    Channel 5: 47.8 MHz, channel 6: 55.5 MHz.
    Sensitivity,
    0.5 µV with signal-to-noise ratio of 20 dB
    Power supply:
    6 AA cells or batteries. 
    Parts:
    Transceiver, head set, antenna, carrying bag.
    Year of issue:
    1971
    		•