[OZAPRS] 9600 baud

Grant Diffey gdiffey at gmail.com
Wed Jan 12 11:15:22 EST 2011


Richard,

Is that just a unfiltered tap of the discriminator?

or something more exotic?

Grant.


On Wed, Jan 12, 2011 at 8:36 AM, Richard Murnane <
Richard.Murnane at internode.on.net> wrote:

> Hi Howard,
>
>
>  Just wondering why we use 1200 baud for APRS and not 9600?
>>
>
> A mix of technical and historical reasons.
>
> At 1200, you can just plug packet gear into mic/speaker sockets of an
> existing radio, without modifying the radio innards. If you want to use
> 9600, you have bypass some of the audio circuitry and get inside the radio.
>
> Newer radios can work with 9600, but there is an awful lot of older gear
> out there that still uses 1200, so it's probably not going anywhere soon.
>
> 73 Richard VK2SKY
>
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> OZAPRS at aprs.net.au
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