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Factory Service Manual
       Page 1 to 3
       Page 4 to 22
       Page 23 to 32
       Page 33 to 43
       Page 45 to 55
       Page 57 to 70
       Page 71 to 89

Diagrams
       Receive AM block Diagram (11x17)
       LSB block Diagram (11x17)
       USB block Diagram (11x17)
       Transmit AM block Diagram (11x17)
       LSB block Diagram (11x17)
       USB block Diagram (11x17)
       3078 Schematic
       3078 Schematic (11x17)

Mic Wiring

Stock

1 - Audio In (mic)
2 - Transmit
3 - Shield  (ground)
4 - Audio Out
5 - Receive

Astatic
1 - White
2 - Red
3 - Shield & Blue
4 - NC
5 - Black
     Yellow NC