[GreenKeys] Teletype tape to Morse tape converter

[W2HX]

You can compare to an instrument I have, an A.T.M. (Automatic Telephone Manufacturing) Undulator. Aka siphon recorder. It was used for undersea telegraph cables. This example is from about 1915 IIRC.  It both siphons and undulates hence the names given to it. The siphoning function is a small capillary tube that is flicked left and right by the electric current (undulating) and that capillary tube siphons ink from the ink well to the paper.

http://w2hx.com/x/Telegraphy/ATM%20Siphon%20Recorder/

one of the pictures in that folder shows what the writing on the tape would look like. And there are 3 very short videos of things moving.


-----Original Message-----
From: GreenKeys [mailto:greenkeys-bounces at mailman.qth.net] On Behalf Of Jim Haynes
Sent: Sunday, January 31, 2016 3:52 PM
To: COURYHOUSE at aol.com
Cc: greenkeys at mailman.qth.net; navy.radio at gmail.com
Subject: Re: [GreenKeys] Teletype tape to Morse tape converter

On Sun, 31 Jan 2016, Ed Sharpe Archivist for SMECC via GreenKeys wrote:

> There were a lot of them used  ww2  I was  told but how far back do they go?
>  
Patented in 1914, pats 1,085,984 and 1,085,985

I believe the original use was for undersea cable transmission, where they used bipolar signals, one polarity for dot and the other for dash.  Then with radio used for very high speed operation with dots and dashes.