[aprssig] slightly OT talking about 9k6

Bill Vodall wa7nwp at gmail.com
Fri May 6 17:27:19 CDT 2016


On Fri, May 6, 2016 at 3:01 PM, Rich Osman via aprssig <aprssig at tapr.org> wrote:

>
>

>> Does anyone have a line on 9k6 KISS tnc's that are (relatively) cheap to get  a hold of?

The right solution today is a Kenwood D710.   Considering time and
frustration - it'll be the best working system.


> Dire Wolf on a Raspberry Pi is purported to work better than hardware solutions and will do 9600.  $35 + $5 USB soundcard dongle.

The 9600 is still a real problem with USB soundcard dongles.  There
are issues with transformers and DC blocking capacitors.   This is a
solution that shows real promise but there are still challenges.

FWIW - not the question at hand but related - the 4800 QPSK mode
(UZ7HO and others soon) is working out better but still requires
direct discriminator audio.  3600 QPSK is working solid with speaker
audio.

Bill, WA7NWP


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