A pre-war ITA2 5 hole tape Hellschreiber transmitter. It is not known what technology was used to convert ITA2 code to Hellschreiber, but it would not have been an EPROM!
This page depecated to early Hellschreiber development and related technologies is a work in progress. If you have any information, photographs or other goodies relating to equipment from this era, from any source, please let me know.
A pre-war ITA2 5 hole tape Hellschreiber transmitter. It is not known what technology was used
to convert ITA2 code to Hellschreiber, but it would not have been an EPROM!
A Hell Receiver from 1940. This unit contained no electronics - the amplifier and driver
was contained in a separate box. The receipt of tones operated contacts and a relay which
started the motor.
A Hell Keyboard Transmitter from 1940. There was also a
combined transmitter receiver model made by combining this unit
with the receiver above. You can see the blank panel on top where the receiver fitted.
There were at least two Hell tests sets, one more elaborate than the other (shown above)
and also an oscilloscope based test set.