[Lf] CW filter and Laptops

[Andre' Kesteloot]

Frank Gentges wrote:

> Those who have sat through my rantings the past two weeks at tacos knows
> that I want a good CW filter to go with the LF receiving setup we have
> been evolving with the RX320 and spectran.  Tonight I had a chance to
> revisit Hamview which is the predicesor of Spectran.  It uses full duplex
> sound card capability to send processed sound out of the analysis program
> while at the same time receiving sound from the receiver.

a) What kinds of sound-card are those built in laptops nowadays? Mono or
stereo?  Mine has a stereo input plug (which of course, means nothing)
b) whatever we develop either for LF, or even mobile work in general, will
almost   _have_   to be for laptops. Not only are laptops becoming more and more
powerful, but with increasing noise levels, etc., I would think that moving your
computer to other locations within the home, and driving to places where noise
will be minimal (such as parks, mountain tops etc.) will become mandatory
c) most modern laptops are essentially bordeline Tempest
d) why would an external box with extra dsp capabilities be less accptable than
using a stereo card ?
73
Andre'