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Author Topic: Adversity  (Read 528 times)
N7APP
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Posts: 3




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« on: January 24, 2008, 06:20:14 PM »

I visited a friend the other day that some of you may have had contact with in the past. G3NOM had suffered a stroke just over 3 years ago and at present is able to move only his head. My comment and question is that I seem to remember reading of a key that is activated by blowing a slight puff of air, allowing CW to be sent. Would any of you know how I might be able to build such a key? Ray has for the past 3 years been able to hear, but not speak, for him to be able to communicate via CW would be a tremendous joy for not only him but all around him.
Thanks for any help.
N7APP
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KB1OOO
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« Reply #1 on: January 24, 2008, 06:36:19 PM »

Hi N7APP,

There's some good information on "sip/puff" morse interfaces at the following address:

http://www.makoa.org/jlubin/morsecode.htm

Best of luck,
Marc
KB1OOO
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K5LXP
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« Reply #2 on: January 24, 2008, 07:50:55 PM »

The March 2004 issue of QST had an article describing the construction of a puff and sip key.

Mark K5LXP
Albuquerque, NM
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N3OX
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« Reply #3 on: January 25, 2008, 08:54:15 AM »

http://www.handiham.org/manuals/ARRL/qst-puff-and-sipfinal.doc

Here's that QST article.
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73,
Dan
http://www.n3ox.net

Monkey/silicon cyborg, beeping at rocks since 1995.
N7APP
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« Reply #4 on: January 25, 2008, 02:31:11 PM »

Thank you all very much. The article should do the trick.
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N7APP
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« Reply #5 on: April 28, 2008, 09:55:09 PM »

Well I have been able to get all of the parts together and have built a couple of sip and puff systems. It is really only about a 45 minute job. It is very surpising how easy it is to send CW while using it. I hope to present it to my friend in a few weeks from now.
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