EE-8 Army Field Phone
Quick Reference
List of components: Electrical Checks
  1. Coil C-105 Impedence Matching
  2. Coil C-158 Holding
  3. Capacitor CA-355,1-2 2MF or CA-209 1.9MF Ringer line blocking
  4. Capacitor CA-355,2-3 0.5MF or CA-177-A 0.5MF Coil line blocking
  5. Capacitor CA-355,3-4 0.3MF or CAP-259 0.3MF Receiver balance
  6. Generator GN-38(B) with Crank GC-9
  7. Ringer MC-131
  8. Batteries(2) BA-30 ("D" Cells!)
  9. Screw Switch
  10. Lever Switch
  11. Butterfly Switch
  12. Generator 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)
WindingBetween TerminalsMaximum d-c resis-
tance (ohms)
Inductance
(millihenries)
 1-2-325120+-10 percent
Primary2-335+-10 percent
Balancing3-4370+-5 percent80+-10 percent
Mutual inductance2-3 to 1-2-3-4 42+-10 percent

RM-29A EE-91 BD-72

Created: 02-23-2009
Last Update: .
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