All the discussion raises a couple of questions for me:
I believe [but do not really "know"] that Collins began this with the
KWM-2/2A and the S-Line. The key line keyed an audio oscillator which
must have been very sinusoidal and free of noisebecause the CW spectrum
was very clean. Is this true?
When I run RTTY here at home [K3], I use AFSK from MMTTY and the
computer sound card. I've looked at the spectrum and it's very clean. I
was under the impression thata single frequency from a sound card is
very sinusoidal with very low harmonic content and other artifacts given
that it's constructed from a nearly exact data stream.
I know about the Windoze noises, mine are turned off. If it works for
RTTY on my K3, why wouldn't CW also work equally well? My sidetone is
set at 580 Hz, a sweet spot in otherwise lousy hearing. If I'm on USB
with someone and send something on CW, I think he hears it at 580 Hz. Yes?
73,
Fred ("Skip") K6DGW
Sparks NV USA
Washoe County DM09dn
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