[aprssig] IGATE delays

Wes Johnston aprs at kd4rdb.com
Wed Jun 8 07:10:13 CDT 2005

I spoke with ww6jc last night on the phone (super nice guy, just getting
started in aprs), and he said his copy of uiview is connected to
montana.aprs.net:14580. Could it be that Curt's problem station, and the
one mentioned from canada are both connected to this same hub? I asked
ww6jc to connect to a different aprs server (kc4pl's server that is
local to South Carolina) for the time being to help diagnose this problem.


Curt, WE7U wrote:

>On Tue, 7 Jun 2005, Keith - VE7GDH wrote:
>>Wes KD4RDB wrote on 07/06/2005
>>>Guys, try to follow me on this one.... last night I noticed that my
>>>track from driving home seemed to "ratchet" back and forth.
>>I have observed this for stations just east of Vancouver BC. When
>>I get a chance will look at some log files I had and one that was
>>sent to me and try and pin down which of several IGates it could
>>be. I suspected it could be the time being off at one of the
>>IGates but haven't had a chance to spend look at it properly yet.
>>I am one of the IGates involved, but my computer time is within a
>One of the reasons I backed my path for my mobile down was that
>there were igates up there that were putting my packet into the
>internet delayed, which combined with the igating down near Seattle
>made my path all screwy.  By shortening my path I avoided a lot of
>It shouldn't be a time-setting on the computer that's the problem,
>as Xastir (what I was monitoring with via an internet connection)
>and findu.com ignore the timestamps.  It's a delay in feeding the
>packet to the internet.  Whether that's an RF delay or a computer
>processing delay, I can't tell.
>Curt, WE7U.   APRS Client Comparisons: http://www.eskimo.com/~archer
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