"Roger Conroy" wrote in message
...


[snip]


I've recently read somewhere (if only I could remember where) of a totally
deaf ham
who operates cw. He was a no-coder until he became deaf. He uses a
homebrew
gizmo plugged into the headphone socket that flashes a light. Was allowed
to
use it for the test without any problems.
His only problem is that from around 15wpm the light does not come on and
go
out fast enough. IIRC his device uses standard tungsten filament bulb.
What
would be the best alternative, i.e. "switches" faster, LED or neon bulb?
The article had a schematic of the sound-to-light converter - I remember
it
could be adjusted to allow for signal strength, noise and variations in
output characteristics of different radios.

I suppose someone reasonably competent in electronic design, not me ,
could "re-invent" such a thing without raising a sweat.

73
Roger ZR3RC


It might not be possible to go any faster with a flashing light anyway as
"persistence of vision" kicks in somewhere around there and it would look
like a single long light anyway. That's how movies work.

Dee D. Flint, N8UZE