All American Backpack- Radios from their beginning (1938) till 1990 are in the collection. 
The chart can be used as quick navigation between the radios.  
US Backpacks
  
    
       AN/PRC -8, -9, -10
  are portable manpack FM transceivers for tanks -, artillery- and infantry units. 
    They can be used either mobile or stationary; in planes or vehicles.
  
       PRC-8 (20 .. 27.9 MHz) was meant for Armour,
      PRC-9 (27 .. 38.9 MHz) was meant for Artillery and
      PRC-10 (38 .. 54.9 MHz) for Infantry.
  
      The forces can communicate by using the overlapping frequencies.
      
     Relay station operation (also unattended) is possible;
    they can be operated remotely, and a homing use is also possible. 
    They look alike, only differ in frequency range. 
  
 You still can get empty originally used  batteries (e.g. for the setting up of a power pack).  
    There are however (rare) insertable power supplies, operated on 12 V.
    Versions PRC-8A, PRC-9A and PRC-10A    have a flat front and  
    4 IF-amplifiers AM-427A/U (U101 to U104); 
        (An English version of PRC-10A belongs to the collection)    (see picture gallery)
    
  
    Versions PRC-8, PRC-9 and PRC-10     have the better known step front and 
     5 IF- amplifiers AM-427/U     (U101 to U105). 
   
( Examples shown in the Picture Gallery).
      
      - Frequency ranges:
      
 PRC-8:  20... 27.9 MHz, 1.2 W PRC-9:  27.0... 38.9 MHz, 1.0 W PRC-10:  38.0... 54.9 MHz, 0.9 W
  
         - A co-operation is possible with:
      
 -    
 
        - PRC-8: RT-66,  R-108
        
- PRC-9: RT-67, R-109
        
- PRC-10: RT-68,  RT-70, R-110, BC-1000.
           Here you find the battery testset AN/PSM-13
 A chart shows the mobile and portable radios that can work together and their frequencies ==> 
 
 Link to the chart: 
 
    
    
      
  
      
      Technical data:
       
      
      - Mass + weights:
 - Radio:  L/b/h:  290 x 76 x 242 mm;  11.8 kg.      
 - Transmitting power
 -  0.9... 1.2 W
 - Range 
 - 5 - 20 km.      
 - Sensitivity,
 -  under 0,5 UV      
 
 - Sections of the radio:
 
 - Radio, stretcher belt, bag with Antennas + antenna base + hand set
 - Accessories:
 -  Power supply AM-598/U
- Remote control box record GRA-6
- Directional antennas AT-339/PRC and AT-340/PRC        
- Mast antenna RC-292
    - Battery BA-279/U:
	
 -  +1,5 V, -6 V, 
	
- +67,5 V, +135 V (from two batteries each 67.5 with central connection)
   
    
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