[Space] aprs stuff

Jonathan Moore moore at eds.org
Tue Jan 26 07:50:23 PST 2010


On Tue, Jan 26, 2010 at 7:37 AM, Adam Fritzler <mid at zigamorph.net> wrote:
> On Mon, Jan 25, 2010 at 9:52 PM,  <nils at shkoo.com> wrote:
>> The APRS signal is over FM, right?  Don't we need quadrature to decode it,
>> giving us only 2 channels of I+Q?
>
> APRS is just 1200 baud FSK.
>
> You really don't need something as complicated as a USRP to decode it
> -- a sound card and the linux AX.25 stack's soundmodem will work fine.
> My cheap netbook is more than fast enough.

The goal hear was to do direction finding using the USRP not decode the APRS.


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