© Brooke Clarke 2011
There was some discussion about the
HS-30 on the Army Radios Yahoo list server. It was introduced to
be a universal headset that could be worn under a helmet and/or gas
mask unlike prior headsets that were too bulky. The intention was
that you would order not only the HS-30 proper, but also the needed
cords, transformer and switching gear and assemble a complete set that
would work with your specific radio.
Signal Corps Technical Information Letter No. 16, March 1943: III. Accessories for the Versital Headset HS-30
(2 MB file)
The drawing from this document is here (click on image for larger
The diagram shows the CD-604 with terminals,
but you need a PL-55 installed on the HS-30 in
order to connect to the CD-604 transformer.
DC resistance is 111 Ohms. i
If a 1.5 V Alkaline battery is connected to the leads a very loud
clicking will be heard.
Fair Radio Sales
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page created 7 Jan 2011.