[aprssig] "Best" packet decoder solution
Lynn W. Deffenbaugh (Mr)
ldeffenb at homeside.to
Mon Dec 27 14:00:34 CST 2010
I have seen the KPC-3+/KISS issue discussed several times on multiple
APRS mailing lists, but my best reference is the direct experience of
Richard Sharp (KQ4KX) who maintains the WC4PEM digi/IGate network in
Polk County here in Florida. WC4PEM is a KPC-3+ running in KISS mode
and if he doesn't reboot the TNC every week or so (sooner if APRS
traffic gets heavy), it begins introducing delayed packets into the
APRS-IS network. The easiest way to see this is on packets that include
a timestamp. The packet will appear once via some other IGate and then
again via WC4PEM with a 1-5 minute (yes, it has been up to 5 minutes)
delay. The problem is only known to exist in KPC-3+, the non-plus and
other Kantronics units do not seem to have the issue.
I have not experimented with the difference between AGW PE vs PEpro. I
only quoted my experience with PEpro because that's what I run with all
of my testing. I'm still hoping that the Pro version gets updated to
catch up with the free version because I need to be able to specify a
split input and output sound card channels complements of the
differences in the way Windows 7 handles my audio devices now that I've
added a Signalink USB.
The Pro version's KAM tone support works really well for me as I'm
running it on 30m HF side-by-side with APRS Messenger (2100hz) with both
of them running through an instance of my APRSIS32 for map visualization
and Igate functions.
Lynn (D) - KJ4ERJ - Author of APRSISCE for Windows Mobile and Win32
Stephen H. Smith wrote:
>> I have a KPC-3+ here, but I haven't yet hooked it up to anything for
>> comparison to the TNCs listed in my previous e-mail. I haven't made
>> time for this because apparently the KPC-3+ also has trouble when
>> operated long term in KISS mode which is my preferred TNC interface.
> Where have you encountered KISS issues with the KPC3? I have a KAM
> (VHF side is essentially identical to a KPC3 while the HF side uses
> two independent switched-capacitor tone detector channels like classic
> RTTY "TU"s) -and- a KPC3+ in my ham "super server" VHF/HF
> igate-UIwebserver-APRN-Echolink setup. Picture and details here:
> Both run in KISS mode and have run for months at a time without any
> problems. The KAM in KISS mode provides two logical KISS data
> streams (one for HF, one for VHF) on a single physical serial port.
> They are then separated by AGWpe into separate AGW logical ports which
> are then used by different copies of UIview.
> Finally, you say you found AGWpe Pro to be the best performer. Have
> you compared it to the freeware version? I had assumed the main
> difference in the "Pro" version was the fancier GUI. Is there an
> actual difference in the decode performance?
> I have been considering buying the Pro version, but mainly because
> it's HF mode uses the standard 1600/1800 Hz KAM/TNC2 HF tones
> instead of the 2100/2300 tones of the freeware version. (The higher
> tones can present problems with the limited passband of many HF SSB
> aprssig mailing list
> aprssig at tapr.org
More information about the aprssig