[GreenKeys] Wheatstone Morse

[wperko at brainless.org]

Hi,  

 

I thought the OP-80A could read both 5-Level and 8-Level paper tapes?  

 

I wish somebody here in the USA made OP-80A kits 
 the guy in the UK quit,
but won’t publish his Gerber files.  

 

 

 

 

============================================================================
==================
C U L8r,  °|°  Walt Perko  °|°        "Kids ... teach them the good stuff,
and they still learn the bad stuff on their own."

 <http://www.r2pv1.com/> http://www.R2Pv1.com/  RoboGuts™ Intelligent
content for 3D printing making S.T.E.A.M. education better, easier and more
affordable  

 

Experiments to learn how to use various Electronic Components, Structured
Computer Programming, Phonemes for Speech &Song in any language, and Art.


                         "The World Needs a New Economic Model"
============================================================================
==================



            Sent from the Cyber7 

 

 

From: greenkeys-bounces at mailman.qth.net <greenkeys-bounces at mailman.qth.net>
On Behalf Of John Lawson via GreenKeys
Sent: Thursday, September 24, 2026 8:33 AM
To: Greenkeys <greenkeys at mailman.qth.net>
Subject: [GreenKeys] Wheatstone Morse

 

I rescued a couple of TTY Wheatsone punches in their lovely wooden cases,
and a Boehme reader, from the old Mare Island Naval facility. The machinery
has all gone to good homes where it will be displayed. 

 

However, there were also many large reels of punched tape.  I’m currently
midway thru fabricating a photoelectric reader head, and I’ll program an
Ardiuno or Raspbery Pi to read them.

 

It’s a little tricky because the decoder must discern four states: ‘ one
sprocket only’(inter character gap), ‘two sprockets only’ (inter word gap),
‘sprocket plus both holes’ (a DIT), or ‘sprocket plus one hole, then
sprocket plus a second hole’ (displaced by one sprocket hole in time; a
DAH).

 

The original System, all mechanical, was said to have been able to work at
up to 500 WPM
       dang



 

Anyway, I’m looking forward to seeing what is on these old tapes.  Its not
particularly difficult to read them visually, just tedious and I’m lazy.

 

HIHI

 

Wiki article: https://en.wikipedia.org/wiki/Wheatstone_system

 

Cheers

John KB6SCO
Casrson City

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mailman.qth.net/pipermail/greenkeys/attachments/20260924/874846d2/attachment.html>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: image001.jpg
Type: image/jpeg
Size: 7014 bytes
Desc: not available
URL: <http://mailman.qth.net/pipermail/greenkeys/attachments/20260924/874846d2/attachment.jpg>