[GreenKeys] SAQ VLF using 5-bit tape

[Duncan Brown]

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 
> <duncanancy at earthlink.net>:
>
>     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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