[aprssig] slightly OT talking about 9k6
Brian D Heaton
ky9k-lists at ky9k.org
Sat May 7 20:28:16 CDT 2016
Something like this?
On 5/7/2016 15:45, Ross Whenmouth via aprssig wrote:
> I am working on the design for a "Pi-hat" audio card for the Raspberry
> pi, specifically for amateur radio use (including APRS and 9k6
> packet). I am targeting ~ 4Hz to ~ 90 kHz audio input bandwidth (DC -
> 90 kHz output), compatibility with 600 ohm balanced interfaces (and
> unbalanced interfaces too), low QRM, complete galvanic isolation and
> good common mode rejection.
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