American Bosch Magneto Corp.

Schematic Wiring Diagram of Model 107 Receiver

Color Code
to the Transformer
"1 1/2 Volts" (top terminals) ... Red Red
"2 1/2 volts" (center terminal) ... Black Black
"5 volts" (bottom terminals) ... Yellow Yellow

To the Nobattry
"B BAT -" ... Black with green trace
"B DET +" ... Blue
"B AMP +" ... Brown
"B PWER + " ... Green

Nomenclature
1. Volume Control
2. Clarifier Control
3. Station Selector
4. Kilocycle Indicator
5. Long Antenna Post
6. Short Antenna Post
7. Ground Post
8. Link
9. Output Jacks
10. 1st Radio Frequency Tube
11. 2nd Radio Frequency Tube
12. 3rd Radio Frequency Tube
13. 4th Radio Frequency Tube
14. Detector Tube
15. 1st Audio Tube
16. 2nd Audio Tube
17. Drive cover plate
18. Variable condensers
22. Dial Light
23. 1st R.F. Balance Condenser
24. 2nd R.F. Balance Condenser
25. 3rd R.F. Balance Condenser
26. 4th R.F. Balance Condenser
27. Grid Leak
28. Detector By-Pass Condenser
29. Grid Condenser
30. 1st R.F. Grid Resistor
35. Detector Alignment Condenser
36. Variometer Stator
37. Variometer Rotor
38. 1st Audio Transformer
39. Output Transformer
40. Plate By-pass Condenser
41. Filament By-pass condenser
42. Resistor By-pass condenser
43. 2nd Audio Resistor
44. R.F. and 1 A.F. Resistor
45. Center Tapped Resistors

107 (A.C.)