On one side there are transistors, resistors and diodes. "POSITIVE LEVEL AMPLIFIER W601D" is printed in solder on the circuit side at the top left edge. There is an 18 pin connector on the circuit side.
Date
1966 ca.
Manufacturer
Digital Equipment Corporation (DEC)
Place Manufactured
Maynard, Mass.
Identifying Numbers
Model number
W601
Printed in black on the face of the extraciton handle
Other number
5-69
Printed in solder on the circuit side on the left edge
Other number
W601D
Printed in solder on the circuit side of the board