[Xastir] A good time for APRS at 9600?

[James Ewen]

On Sat, Nov 12, 2011 at 3:23 PM, Guy Story KC5GOI <kc5goi at gmail.com> wrote:

> I never said in 15 years of personal APRS activity including setting up
> digipeaters and operating the second igate (aprsD) in the Dallas/Ft Worth
> area for better than 12 years that 9600 baud was a bad idea.  All I said
> was that this has been talked about and the pitfalls discussed.  I know
> about the experiments to a limited extent and I encourage it.  I just do
> not have time to start it in Denton Co.

On a somewhat related note...

The digipeaters that you have set up running under the W5NGU callsign
running the 8.2 firmware have uncovered a problem with Byon's
digipeating code in the TT4.

I've been helping a new APRS operator set up a digipeater in Denison,
and the combination of the bug in the KPC-3 v8.2 firmware and the TT4
digipeating error makes for some interesting packet handling.

The v8.2 UITRACE routine doesn't mark the used up path properly,
leaving it with the has-been-digipeated bit unset.

K5SLT-9>SSPR7R,W5NGU-3*,WIDE2:`|OLl K\]"69}Hi from Ken in Plano using
TM-D710&G5 =

The TT4 doesn't properly honor the SSID (-0), and assumes that WIDE2
is asking for a hop.

K5SLT-9>SSPR7R,W5NGU-3*,W5DWH-3*,WIDE2*:`|OLl K\]"69}Hi from Ken in
Plano using TM-D710&G5 =

The result is that every packet that is handled by a KPC-3 v8.2 ends
up getting one extra hop from a TT4 based digi.

Not much we can do about the KPC-3 as that's abandoned, but we need to
get Byon to correct the TT4 digipeating routines.

BTW, Guy, do you support TXn-N digipeating? The Rosston machine is
reporting that it does not support WIDEn-N or TXn-N, while the Denton
machine is reporting that it is still supporting the older callsign
overwrite UIFLOOD supported WIDEn-N digipeating.

There have been changes made in the past 15 years, and updates as to
how we set up digipeaters. I'm thinking that you've probably made some
of those changes, but the information coming out of the digipeaters
doesn't reflect those changes.

-- 
James
VE6SRV