[Xastir] Can someone help fix an error in configuration

[Norman Heyen]

Thank you Tom,

I changed the TT4 from AMODE TEXT to AMODE KISS, removed the Serial TNC
interface and used the KISS TNC interface in Xastir. It seems to be working,
at least as near as I can tell. I get so little traffic out here it is hard
to tell for sure. But at least a couple of packets seemed to flow through
without errors. It takes a while to get a packet to deal with from my
location.

For some reason the traffic was very high over the weekend but has fallen
off yesterday and today. Went from over 300 packets/hr gated to APRS-IS to
10-20 today. I thought I was on to something getting that many but must have
been something 'in the air'.

Anyway, thanks for the explanation and guidance, and looks like this is
about what I can expect. I'll be moving to a different box with Ubuntu 10.04
and Xastir 1.99 so I can have the OSM displayed. They look OK from the
screen without a radio attached, so just a matter of finding some time to
move everything around on the bench.

73,
Norman
KC9NVN

-----Original Message-----
From: xastir-bounces at lists.xastir.org
[mailto:xastir-bounces at lists.xastir.org] On Behalf Of Tom Russo
Sent: Monday, September 13, 2010 5:14 PM
To: Xastir - APRS client software discussion
Subject: Re: [Xastir] Can someone help fix an error in configuration

On Mon, Sep 13, 2010 at 09:26:12PM +0000, we recorded a bogon-computron
collision of the <n.heyen at comcast.net> flavor, containing:
> 
> 
> I have Xastir 1.98 running on Ubuntu 9.10 with a TT4. It seems that it
works right, I'm sending a lot of packets to APRS-IS and at least a few
packets as a digi. But when I look at the raw packets on APRS.FI (my station
id is KC9NVN - no SSID used at this point). 
> 
> 
> 
> I set up the TT4 per the Yahoo Group??file Fillin Digi V0.64.pdf - I set
it up and let it run for a couple of days without Xastir attached and seemd
OK. 
> 
> 
> 
> It looks like I'm getting errors in the digi packets but I'm not sure if
the bad packets are from my origin or something that I'm passing along. A
sample of the packets is below: 
> 
> 
> 2010-09-13 11:50:00 CDT:
KC9NVN>APTT4,KB9WZM-10,WIDE2*,qAR,N9QIP:=4217.27N108940.67W#XASTIR-Linux-Fre
eport,IL 
> 2010-09-13 12:20:01 CDT: KC9NVN>APTT4,KB9WZM-10,WIDE2*,qAR,W9TMW:MYCALL
KC9NVN [Unsupported packet format] 
> 2010-09-13 13:20:03 CDT: KC9NVN>APTT4,KB9WZM-10,WIDE2*,qAR,W9TMW:<0x03>k
[Unsupported packet format] 
> 2010-09-13 14:59:55 CDT:
KC9NVN>APTT4,KB9WZM-10,WIDE2*,qAR,N9QIP:<0x03>UNPROTO APX199 VIA WIDE2-1
[Unsupported packet format] 
> 2010-09-13 15:00:36 CDT: KC9NVN>APTT4,KB9WZM-10,WIDE2*,qAR,W9TMW:<0x03>k
[Unsupported packet format] 
> 2010-09-13 15:20:07 CDT: KC9NVN>APTT4,KB9WZM-10,WIDE2*,qAR,W9TMW:MYCALL
KC9NVN [Unsupported packet format] 
> 2010-09-13 15:20:08 CDT:
KC9NVN>APTT4,KB9WZM-10,WIDE2*,qAR,N9QIP:<0x03>UNPROTO APX199 VIA WIDE2-2
[Unsupported packet format] 
> 

You don't seem to have your TT4 set to be a KISS TNC, and you're attaching
it
to Xastir as a Serial, command-mode TNC.  "MYCALL", "UNPROTO" and so forth
are 
serial-TNC commands.  "<0x03>k" is "Control-C" followed by K, which is what
Xastir sends to put the TNC into command mode.

Xastir is sending serial TNC commands to the TT4 and they're being
transmitted.
That's wrong.  Those commands are meant to be interpreted by the TNC, not
transmitted.

I don't think the TT4 can function as a serial, command-mode TNC, but as I 
understand it it *can* function as a serial KISS TNC.  So you have to put it
in 
KISS mode and tell Xastir to talk to it as a KISS TNC.

The only thing that's going right here is that the TT4 is beaconing on its
own (as evidenced by the APTT4 tocalls).  Everything that Xastir's doing is 
being interpreted wrong and generating bad packets.

Consult the TT4 documentation on putting the tracker into KISS TNC mode
instead
of tracker mode.

-- 
Tom Russo    KM5VY   SAR502   DM64ux          http://www.swcp.com/~russo/
Tijeras, NM  QRPL#1592 K2#398  SOC#236
http://kevan.org/brain.cgi?DDTNM
 "The truth will set you free, but first it will piss you off."

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