There is a simple circuit in this months Practical Wireless.
At 08:40 30/09/99 +1, you wrote:
Dear Alan,
if I understand well,you are receiving CW by ear, not by
Spectrogram.
For receiving CW by ears I found very useful a stereo processor,
like that described in
http://hem2.passagen.se/sm0vpo/use/stereo.htm
which allow to "spatially" spread signals (and noise) " in front of
you":
lower frequency signals are stronger in the left earphone
speaker, and higher frequency in the right one. In this way you can
simply concentrate your brain in the signal coming from a certain
"virtual direction"
It's interesting with large filters (e.g. 500 Hz), however I never
tryied it with narrower filters. It may need some adjustment...
73 Aldo IZ1ANT
|
