BOS radio

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   SEM 283
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  SEM 283

is a UHF handy portable of the Teleport-VII-family, built for the 4 m and the 2m- band. It is meant for industrial purposes. A lot of accessories provide a widespread use- it also can be carried hidden.
 
Like other Teleport-VII-radios it comes in three different housings:

  • Housing K (kurz):
      a small battery is attached to the bottom of the radio.
  • Housing L: (Lang):
      a larger battery is attached to the bottom of the radio.
  • Housing D1 (thick):
      the battery is attached to the back of the radio.
     
    The radios here are:
  • a SEM 283 (70 cm) with long housing (see picture gallery).
  • a SEM 283 (2 m) with long housing (see picture gallery).

    Frequency range:
    2 m: 146 .. 174 MHz ( SEM 283-160 )
    4 m: 68 .. 78 MHz ( SEM 283-70 )
    4 m: 78 .. 88 MHz ( SEM 283-80 )

     

    Technical data:
    HF output:
    300 mW, 1 W; 2.5 W
    Channels:
    10
    Mode:
    F3 oder F2
    NF- frequency:
    300 .. 3000 Hz
    Call tones:
    2 iin the range of 370 .. 2800 Hz, single or simultaneous
    NF- output:
    0.4 W / 15 Ohm
    Loudness:
    switched in four steps
    Sensitivity:
    0.35 - 0.6 µV / 20 dB
    Powered by:
    9.6 V
    Weight:
    Housing K : 700 g
    Housing L und D : 800 g