[CRTech] Christian Radio Tech [MSG 84173]
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Tefifon "Carts"
To: CRTECH <crtech@crtech.org>
Subject: Tefifon "Carts"
From: John Stortz <ka4flx@gmail.com>
Date: Wed, 24 Oct 2018 00:44:53 -0400
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Just discovered information about this audio player which was developed in the 1930s. It uses grooves to record sound onto a plastic [non-magnetic] tape. And [in 1940s] is packaged as an endless loop, similar to the cartridges of magnetic tape -- the BROADCAST CARTRIDGE and the EIGHT TRACK Cartridge [for home use].
So this invention pre-dates the practical use of magnetic tape, but developed the concept of a practical endless loop of recording long portions of audio, up to 4 hours of audio on one cartridge.
John S.

If corn oil is made from corn, and vegetable oil is made from vegetables, 
then what is baby oil made from?
*~Unknown Wise Guy~

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