[GreenKeys] A fun little project.

[Paul Birkel]

Jeff:  Please educate the rest of us by sharing your design with the GK crowd :->.   Thank you.

Ail:  How did it happen that the British were different in this regard?  Evidently they didn't successfully propagate their choice of bipolar keying overseas ...

-----Original Message-----
From: greenkeys-bounces at mailman.qth.net [mailto:greenkeys-bounces at mailman.qth.net] On Behalf Of Paul Heller
Sent: Friday, July 10, 2020 6:26 AM
To: Jeffrey Angus
Cc: greenkeys
Subject: Re: [GreenKeys] A fun little project.

Well done Jeff! You know your stuff. Thanks for contributing to our group. 

Paul
W2TTY

> On Jul 9, 2020, at 9:31 PM, Jeffrey Angus <jdangus at att.net> wrote:
> 
> Henning was talking to Sean in England about British teleprinters
> using +/- 20 mA bipolar keying rather that the on/keying used
> everywhere else. He told Sean to get in touch with me. So we
> discussed the problem. I came up with a simple solid state
> bi-polar keyer. It was a fun project. Sean ordered PC boards
> based on my design and filled them with parts. It works.
> 
> -- 
> "I am a river to my people."
> Jeff-1.0
> WA6FWI
> www.foxsmercantile.com
> 
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>>> Jordan Spencer Cunningham's GreenKeys Search Tool: https://teletype.net/gksearch
>>> 2002-to-present greenkeys archive: http://mailman.qth.net/pipermail/greenkeys/
>>> 1998-to-2001 greenkeys archive: http://mailman.qth.net/archive/greenkeys/greenkeys.html
>>> Randy Guttery's 2001-to-2009 GreenKeys Search Tool: http://comcents.com/tty/greenkeyssearch.html

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