<... >
I have not done the visual bit since - but then I have
>not
>tried the vibration method either - although a good friend of mine G3UFB
>now
>tells me he experimented with it 10 years ago when I went deaf and reckons
>he
>could read it at 18 WPM - but I haven't got the sensitivity in my fingers
>that he seems to have. Hence my enquires regarding using a LOUD speaker..
>3. WU7R tells me that a kit called 'son of zerobeat' is available and I
>will no doubt purchase one.
>4. Steve (AA4AK) has sent me an interesting article on Sensory
>substitution
>- I shall endevour to understand this 6 page leaflet whilst imbibing my
>Xmas
>Brandy. The further down the glass I get the more I will understand it.
>Thank
>you Steve.
>Again thankyou all - further suggestions would be most welcome.
>Merry XMAS from John G4BOU
>
>
John,
I wonder if fingertips on the transducer is the most sensitive
configuration? You might find another place that is more sensitive, such as
the back of your hand. For example, suppose you took the front piece off of
a headphone and taped the remainder to the back of your hand, such that the
diaphragm is right against the skin. Fingertips are very sensitive for some
things, but maybe not for small vibrations. I have no experience with this,
so I might be wrong. Its worth experimenting with, though.
When I was a kid, an American magazine called Popular Electronics used to
run a series of stories about two kids who would save the day with some kind
of simple electronic device they would construct in an emergency. In one
of these Carl & Jerry stories, they made a covert CW receiver which they had
to use in a crowd without others being aware of it. They disassembled a
little earphone and taped the diaphragm to their bodies somewhere and copied
the CW through the vibrations. I don't remember what global crisis was
averted by their devices, but I do remember eagerly reading each new story
when the magazine arrived.
Dudley - WA1X
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