WIRELESS SET No.  21
1940

Wireless set No. 21 was developed for Infantry Brigade and Royal Artillery Regiment communication. The set was used as  vehicle station, animal pack station, or ground station  replacing  Wireless  Set no. 11 low power.
 

  

 
  WIRELESS SET No. 21    
Freq. cov. 4.2 to 7.5 MHz
19 to 31 MHz
RX IF 465 KHz
Range 2 - 5 miles
RF Power 0.8 / 1.5 W
PWR Supply 6 V accumulator
Weight 48.5 lbs without batt.
Size 11x19 3/4x12.5 in
Tubes Rx 3xAR8 - 6xARP12
Tubes Tx 2xATP7
   
   
   
   
   
   

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