This page describes the IBM SMS card "AQX", and is part of the SMS card database.

Function of the card:
Sense-Final Amplifier

Listed in 1401 SMS card usage

Part number: 370836

PCB number: 493247

Used in: IBM 1401


AM: Amplifier. Provides increased strength to a detected signal or pulse.
IBM SMS card type AQX 370836 IBM SMS card type AQX 370836

References: 1_2 SMS Cards, pp72,73
Coslet data
This page created by Ken Shirriff on Wed Sep 15 18:15:11 2021.

The information on these pages comes from a variety of sources, especially old IBM documents on, as well as information from the IBM 1401 restoration team, especially Tim Coslet's SMS data and Jim Hunt's data. Much of this information was obtained through OCR, so don't expect complete accuracy. These pages are not associated with IBM in any way.