[aprssig] Why do we not use APRS 9600?

[DANA MYERS]

>     On 02/16/2022 2:19 PM david vanhorn <kc6ete at gmail.com> wrote:
> 
> 
>     Why is 9600 the magic number?
> 
>     1200 sucks, but 2400 and 4800 suck proportionally less, and are proportionally more difficult.
>     No particular reason to stay in the standard baud rates either. 3200 might be the sweet spot.
> 
By the time you go to the trouble to make anything faster than 1200 baud work -
which means finding the flat audio in/out path to the discriminator/transmitter - you
might as well do 9600, which fits in a standard NBFM channel.

Multi-level modulation schemes are neat, but require good end-to-end linearity
for decent performance. 9600 GMSK probably IS the sweet spot.

73,
Dana  K6JQ
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