[aprssig] KPC3+ induced errors (was: KC0YA-11 and AE0SS-11 Balloons Aloft)

Russ Chadwick russ at wxqa.com
Sun Mar 13 10:15:26 EDT 2011

On 7:59 PM, Cap Pennell wrote:
> Jason KG4WSV wrote:
>> On Sat, Mar 12, 2011 at 8:40 AM, Stephen H. Smith<wa8lmf2 at aol.com>  wrote:
>>> Both are experiencing a really severe case of the KPC3+ KISS  delayed
> packet
>>> syndrome
>> Has the igate owner been contacted?
> <snip>
> Apparently not, and maybe not the digipeater operators either.  Somebody
> please, tell a friend.  Gotta hear some feedback once in a while, to help
> the VHF APRS users.
> 73, Cap
In response to the messages on this topic, the EOSS balloon flights in 
Colorado are not on 144.390 MHz.  We use other frequencies for APRS, DF 
beaconing, cut-down, etc.  Also the balloons have APRS digipeaters so 
that the balloon on the ground digipeats through the balloon still in 
the air.  There is an I-gate at the launch site, but not at the landing 

The I-gate owner has been contacted.  He reports he uses a KPC-3+, but 
not in KISS mode.

I do an analysis during and after the flights as described here,


and an expanded version of this analysis covering EOSS159 and EOSS160 to 
further study I-gate problems is contained here (look at the  read_me 
file first),


It is very useful to look at the text files contained in this zip file 
in notepad and compare them side by side as shown in the powerpoint 
referenced above.

I receive this mailing list in digest mode and sometimes skim over 
things and may not see a response or question.  I can be contacted 
direct at russ4cwop at gmail.com

Russ  KB0TVJ

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