| 
Year | 
      
Type Hallicrafters | 
      
Ref. | 
      
Tubecomplement | 
    
    
      | 
50 | 
      
414 | 
      
sch | 
      
6AU6, 6J6, 2*6BA6, 2*6SH7, 6H6, 6SJ6, 2*6K6, 5Y3GT/G | 
    
    
      | 
47 | 
      
EC112 / EC113 Echophone | 
      
sch | 
      
12SA7GT/G, 2*12SK7GT/G, 12SQ7, 35L6GT/G, 35Z5GT/G | 
    
    
      | 
45 | 
      
EC-1B Echophone | 
      
sch | 
      
12SA7, 12SK7, 2*12SQ7, 35L6GT, 35Z5GT | 
    
    
      | 
37 | 
      
S15 Sky Challenger | 
      
sch | 
      
6K7, 6L7,6C5, 3*6K7, 6Q7G, 6F6G, 80 | 
    
    
      | 
39 | 
      
S19R Sky Buddy | 
      
sch | 
      
6K8, 6k7G, 6Q7, 76, 41, 80 | 
    
    
      | 
37 | 
      
S20 Sky Champion | 
      
sch | 
      
6K7, 6J5, 6L7, 6K7, 6J5, 6Q7, 6F6, 80 | 
    
    
      | 
49 | 
      
S43 | 
      
sch | 
      
6GA6, TF8, 6SG7, 2*6SH7, 6AL5, 6J5, 6H6, 6SQ7, 6V6, 5Y3GT | 
    
    
      | 
50 | 
      
S53 | 
      
sch | 
      
6BA6, 6C4, 2*6BA6, 6H6, 6SC7, 6K6GT, 5Y3GT | 
    
    
      | 
50 | 
      
S55 / S56 | 
      
sch | 
      
6AG6, 6J6, 2*6BA6, 2*6SH7, 6H6, 6SJ7, 2*6K6, 5Y3GT/G | 
    
    
      | 
  | 
      
SP-44 Skyrider Panoramic | 
      
sch | 
      
6SG7, 6AC7, 6SA7, VR-105, 6SG7, 6SQ7, 6SN7, 6AP-A, 2*5X5 | 
    
    
      | 
  | 
      
SX73 | 
      
pdf | 
      
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