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SUPPLEMENT TO
OPERATION AND MAINTENANCE MANUAL
HALLICRAFTERS HT-44
INTRODUCTION
The HT-44 was produced for 1 year in 1962. It is a 17 tube AM-CW-SSB transmitter/exciter covering 80
through 10 meters. The power output is 100-130 watts PEP SSB, 100-130 watts CW and 25 to 35 watts AM.
The features include VOX, CW break in, PTT, AALC and front panel control of slave (tranceive) or
independent transmitter when used with the companion SX-117.
Over the years technical data on this system has scattered to the four winds. The purpose of this document is to
assemble as much technical information as can be found into one clear and easy to read document. We will take
a systematic approach to the repair and restoration process. The prime assumption will be that nothing works
and will proceed from there.
This document is available free of charge and can be downloaded from the Hallicrafters users’ group
https://groups.io/g/HallicraftersRadios
or
. This document is the intellectual property of the
author, Walter A. Cates, WDØGOF. Unless specifically credited to a contributor all processes, ideas, drawings,
data sheets and opinions contained here are those of the author.
Special thanks to Bernie, WDØGMD for the loan of his HT-44 for test and research for writing this document.
