Modern Era FM Backpack Portables
DH4PY

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      A39SA MK1
   A 53
      B 56

 

 

 

 

 

   A 53

is a South African manpack from the 70s.

Frequency range:
30 ... 49.975 MHz

 


Technical data:
Modulation:
FM
Frequency control:
Synthesizer
Frequency steps:
25 kHz
Channels:
800
Frequency switched by:
3 turning switches
HF Output:
1.5 W
Sensitivity:
0.4 uV
Powered by:
12 V interally or 11 to 16 V externally
Consumption:
Transmitting: 475 mA, Receiving: 80 mA
Antennas:
Blade antenna 1.5 m or shortened antenna oder 50-Ohm-connector
Squelch:
Voice Squelch , later models tone squelch