On Nov 24, 2013, at 7:46 PM, Joe Subich, W4TV wrote:
> > So, 500 Hz definitely does not mesh with the current rules.
>
> 500 Hz does not mesh with the maximums *implied by* the current
> rules. However, *it does* confirm with the Commission's stated
> intent when they established the current rules and the explicit
> rule which applies to automatically controlled digital transmissions.
Joe, I still don't think that works.
The FCC has always allowed 850 Hz shift at 45.45 baud from the moment hams were
first permitted to use FSK. It was initially the *only* thing allowed, and it
was later (February 1956) that they allowed 170 Hz shift. It is a historical
precedence. And it has never been taken away.
So, I don't think it is correct to say that 500 Hz is their intent.
73
Chen, W7AY
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