Delay Line W301

This document is a technical schematic for the Delay Line W301 (W301-0-1), produced by Digital Equipment Corporation in 1987. It details the electrical circuitry, including:

• Circuit Components: A detailed diagram showing resistors, transistors (DEC3639B), diodes (D662), capacitors, and delay line components (DE1-DE4).
• Specifications: Indicates that resistors are 1/4W, 10% tolerance, and capacitors are 68mmfd.
• Transistor & Diode Conversion Chart: Provides a mapping between DEC internal part numbers (e.g., DEC30098, DEC3639B, D662, DEC4) and their industry-standard EIA equivalents (e.g., 2N3009, 2N3839, 1N4148, 1N3608).
• Usage: Explicitly states the schematic is for test and maintenance purposes only.