[GreenKeys] Wheatstone Tape setup 1930

[Nick England]

AFAIK, there were basically three paper tape systems used for training and
code practice.

1) By far the most common commercial system was the Instructograph. It used
dot and dash sized perforations as you suggest. Lots of ham clubs and FCC
examiners had them.
https://m.youtube.com/watch?v=YEaXMsmAMj8

2) Second most common for training were the US Army TG-34 units which used
inked tape and a photoelectric reader.
https://m.youtube.com/watch?v=-ac4wO06X9s

3) Much rarer for training were US Navy AN/UGH-1 units which read
Wheatstone perforated tape. They were made by the same company as the Army
units.
https://www.navy-radio.com/morse/training/ugh1-120301.JPG
McElroy also made a Wheatstone tape reader
https://m.youtube.com/watch?v=j-KDUpvMZfA


For actually sending messages, the Wheatstone system was essentially the
only one in use because you could easily compose tapes from a keyboard
perforator. I don’t know of a keyboard composer for either of the other two
systems.

I suspect inked training tapes were produced by composing on a Wheatstone
system and that tape fed a keyer connected to an ink recorder. I don’t know
how Instructograph tapes were prepared. That company sold sets of training
tapes.

Nick

On Mon, Jul 12, 2021 at 2:27 PM Harold Hallikainen <harold at w6iwi.org> wrote:

> I saw a Morse tape reader in an antiques store years ago. It was part of a
> code practice system. Should have bought it! Also, the FCC office in San
> Francisco had one of these when I took my license exam in 1969.
>
> It's interesting that they used separate areas of the tape for dot and
> dash with the same sized hole for each. It seems like it would be a lot
> simpler to use variable sized holes (a dot punch and a dash punch) on the
> perforator side. The reader would then just pull the tape through at a
> constant speed. It would use more tape, but the reader would be a lot
> simpler.
>
> Did anyone do something like this?
>
> Harold
> https://w6iwi.org
>
>
>
>
> --
> FCC Rules Updated Daily at http://www.hallikainen.com
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>
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-- 
Nick England K4NYW
www.navy-radio.com
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