| 
Coil C-105 Impedence MatchingCoil C-158 HoldingCapacitor CA-355,1-2 2MF  or CA-209 1.9MF Ringer line blockingCapacitor CA-355,2-3 0.5MF or CA-177-A 0.5MF Coil line blockingCapacitor CA-355,3-4 0.3MF or CAP-259 0.3MF Receiver balanceGenerator GN-38(B) with Crank GC-9Ringer MC-131Batteries(2) BA-30 ("D" Cells!)Screw SwitchLever SwitchButterfly SwitchGenerator Switch 
Theory of Operation TM 11-333 Chapter 5 section i. Paragraph 43-4
 | Resistance Measurements 
 
      
        | Between 
 | Ohms 
 | milliH 
 |  
        | L1 - L2 CB On Hook 
 | inf 
 | 
 |  
        | L1 - L2 CB Off Hook 
 | 100 
 | 
 |  
        | L1 - L2 LB 
 | 8,000 
 | 
 |  
        | Mike T. & BAT+ - C no PTT 
 | inf 
 | 
 |  
        | Mike T. & BAT+ - C PTT 
 | 2,400 
 | 
 |  
        | Rcvr -BAT - C 
 | 46 
 | 
 |  
        | Induction (Hybrid) coil 1 - 2 
 | 14 
 | >1000 
 |  
        | Induction (Hybrid) coil 2 - 3 
 | 2 
 | 2.4 
 |  
        | Induction (Hybrid) coil 3 - 4 
 | 47 
 | >1000 
 |  
        | Holding Coil 
 | 100 
 | 600 
 |  
        | Ringer cap #1 - Black on gen 
 | 1,300 
 | 
 |  
| Coil C-105 (From TM11-330 pg23) |  
| Winding | Between Terminals | Maximum d-c resis- tance (ohms)
 | Inductance (millihenries)
 |  
|  | 1-2-3 | 25 | 120+-10 percent |  
| Primary | 2-3 | 3 | 5+-10 percent |  
| Balancing | 3-4 | 370+-5 percent | 80+-10 percent |  
| Mutual inductance | 2-3 to 1-2-3-4 |  | 42+-10 percent |  |