> FSK is a hardware kluge to shift a tone; and in many cases, with
> little control of the trajectory of the slew which, like the wave
> shaping of CW elements, ends up determining how wide your FSK
> keyclicks are.
While FSK as implemented in many of the current rigs is a
kluge and may not generate the absolute minimum bandwidth,
it is still far better/cleaner than the AFSK generated by
rigs with the processor turned on, direct modulator feeds
with hum or common mode RF feedback, open mics in the shack,
overdrive microphone preamplifiers and operating system
sounds.
FSK is like the comment often applied to capitalism ... it's
the worst system there is except for all the others.
73,
... Joe, W4TV
> -----Original Message-----
> From: rtty-bounces@contesting.com
> [mailto:rtty-bounces@contesting.com] On Behalf Of Kok Chen
> Sent: Sunday, March 01, 2009 6:04 PM
> To: RTTY Reflector
> Subject: Re: [RTTY] Fun, but
>
>
>
> On Mar 1, 2009, at 1:58 PM, Jim W7RY wrote:
>
> > With today's modern rigs, there is no excuse for not using FSK.
>
> And how would you do FSK with an ultra-modern SDR like the
> Flex-5000A
> that uses a quadrature sampling exciter? FSK is so 20-th century.
>
> FSK is a hardware kluge to shift a tone; and in many cases, with
> little control of the trajectory of the slew which, like the wave
> shaping of CW elements, ends up determining how wide your FSK
> keyclicks are.
>
> (kluge - n. an ill-assorted collection of parts assembled to
> fulfill a
> particular purpose.)
>
> 73
> Chen, W7AY
>
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