Henning,

I believe it is a Hell Elektronischer Gerber Typ  EG 21. It reads the 5 bit ITA2 code and converts to Morse.  If you look at the tape in the picture I sent, you can see the three groups of VVV: 11110 11110 11110.

Messages would come into the big radio relay stations overland by teletypewriter, but then had to be converted to Morse to be sent out over the radio. At the other end, the Morse message would have to be converted back to land-line teletypewriter.  Rather than have an human operator do the conversions, machines were developed to do the Morse to TTY and TTY to Morse conversions.

Merry Xmas & Happy New Year,

Duncan
K2OEQ


On 25-Dec-21 11:50, Henning Treumann wrote:
Merry Christmas to all!

It's a HELL (Germany)  morse code tape reader. It reads Morse somehow in 5-Bit code and transmitts it as Morse.
You can adjust transmitting speed directly at the reader.

73
Henning DF3OE
i-Telex 925302


Am Fr., 24. Dez. 2021 um 17:33 Uhr schrieb Duncan Brown <[email protected]>:
The annual transmission from SAQ on the 17.2 Kc Alexanderson Alternator
was done this morning. You can watch  the startup and transmission on
YouTube: https://www.youtube.com/watch?v=Ecg2UrKvNr8

Alexanderson Alternators operating on around 17 Kc with an antennas 2.5
Km long was the standard for commercial long distance transmissions;
until hams showed you could do it with 5 tubes and a 100ft antenna, 100
years ago this month.

Note that the Morse "wheel" to send the "VVV DE SAQ" was actually done
from a five bit teletypewriter tape. The machine then converted it into
Morse to key the transmitter.  Many radio stations would receive news
and telegrams by teletypewriter, but transmit them by Morse. So there
were mechanical machines to do the translations, in both directions.


73 &Seasons greetings.

Duncan
K2OEQ
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