[RTTY] RM-11708 has been amended.

[Kok Chen]

On Nov 26, 2013, at 6:35 PM, Kai wrote:

> Pick a number between 2.2 and 2.8 kHz,
> argue for the number by providing evidence that anything higher than your number causes grievous harm to current user.

I am leaning towards 2200 Hz since any device that is legal today will still be legal tomorrow, and the amount of mutual QRM we get today today will still be the amount of mutual QRM tomorrow.

So we'll let people innovate through the relaxation of symbol rate limit, as the ARRL purportedly wishes.

For the same modulation and FEC/encoding scheme, the most 2800 Hz can do over 2200 Hz is 27% better throughput (data rate), and only if you also increase power.  Eb/No of a mode is always going to rule, not lawyers and not the ARRL. 

73
Chen, W7AY