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[hfsig] Performance of 24/192 soundcards? USB Soundcards

Anthony.N.Martin at marconiselenia.com Anthony.N.Martin at marconiselenia.com
Wed Sep 22 12:39:37 UTC 2004



> http://www.amsat.org/amsat-new/archive/index.php?t
=./articles/James_Miller

Thanks.

The G3RUH circuits are here yes. But the type numbers of all the
chips are not on the circuit, and even the pin names (eg. clk) have
been omitted, leaving me clueless if U1 is a counter or a shift register!

> He was making a modem compatible with the K9NG modem, so the
> scrambler algorithm and its place in the grand scheme of things
> were already constrained.

Indeed. Amateurs (and Pro's) often build on what someone else has done
irrespective on whether it was right or good or just plain obsolete.
It's called "Engineering".

My suggestion is that the receiver could be improved without change
to the Tx, so interoperability is unchanged or improved.

Ant M1FDE

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