White = external ground, Red = B + 90 - 135, Yellow = A + 3v., B-, Black = A-

Terminals 1 & 4 = Photo -cell or condenser microphone
1 & 5 = Crystal mic., high imp. pickup, or radio tuner

Model 739 Power Supply

INPUT CONNECTIONS:
1 & 2 200w
2 & 3 500W
1 & 4 PHOTO CELL OR COND. MIC.
1 & 5 CRYSTAL MIC. HI - IMPEDANCE

PICK UP OR RADIO TUNER

NOTE:
TERMINALS 5 & 6 MUST BE SHORT CIRCUITED WHEN USING 200W OR 500W INPUT.

QUTPUT CONNECTIONS - HIGH IMPEDANCE
1 & 2 LOW GAIN
1 & 3 HIGH GAIN