[aprssig] Thinking about YAAC

wa7skg wa7skg at wa7skg.com
Mon Dec 9 01:54:18 EST 2019

For mobile use I will be using an RPi 3B+ with a TNC-Pi, so I won't need 
Direwolf in that application. The TNC-Pi will provide an adequate 
interface between the radio and computer.

For the base, I have a Linux desktop computer running Mint currently 
connected to an MFJ-1274 (MFJ-1270B with tuning indicator) to the radio. 
If I were to use Direwolf on the base, I would need to add a soundcard 
and homebrew some kind of interface for the PTT as well as fabricate new 
cables. Right now, I have a very simple configuration with a single 
serial cable going to the TNC and a single cable going from the TNC to 
the radio and it all works very well. At least with Xastir. With YAAC, 
however, I get nothing displaying on the map. In the configuration 
window for the interface where it has the TEST PORT button, I see plenty 
of data coming in from the TNC. Just nothing displays on the map or in 
the RAW DATA window.

Michael WA7SKG

Greg D wrote on 12/8/19 10:06 PM:
> I'm running YAAC and Direwolf on a Raspberry Pi 3B in my car.  Works
> pretty well, though with the Pi tethered to my Smartphone along with the
> RF link there seem to be some combinations of Digipeating, iGating, and
> messaging that don't seem to work quite right.  Messages didn't get
> delivered in one direction, and I've never figured out what to do about
> it.  If you're all RF, it works great.
> As Stephen noted, the sound card TNCs work really well, and the Pi's
> GPIO pins make the PTT function easy to implement (no need for VOX).
> Just be careful about the voltage levels so you don't damage the Pi.  A
> 1-transistor buffer is usually required.
> Good luck,
> Greg  KO6TH
> wa7skg wrote:
>> I'm looking at alternatives to Xastir for an APRS client and ran
>> across YAAC. The only mailing list I found was for Alpha testers on
>> Yahoo groups. Of course Yahoo groups is a dying animal, so I thought
>> I'd try here.
>> My first issue in setting up YAAC is with my hardware. I have an old
>> original MFJ-1274(NO suffix) TNC2 clone. It does not do KISS, so I'm
>> wondering if it will work with YAAC. Still looking for up to date
>> documentation.
>> After setting this up on my base, I am planning to use it mobile with
>> an RPi and TNC-Pi.
>> Looking for any comments, experiences, etc.
>> tnx es 73,
>> Michael WA7SKG

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