[aprssig] IGate FIlter for AMSATS?

Lynn W. Deffenbaugh (Mr) ldeffenb at homeside.to
Fri Feb 24 20:21:48 CST 2017


Actually, I think the discussion was to implement an IGate mode whereby 
it would never gate a directly received packet, one with no used path 
components.  Time delaying before gating is a disaster waiting to happen 
IMHO.

Lynn (D) - KJ4ERJ - Author of APRSISCE for Windows Mobile and Win32

On 2/24/2017 3:08 PM, Jess Haas wrote:
> I havent used it but Direwolf has a mode to attempt to solve this 
> problem. If I remember correctly it has a satgate mode that instead of 
> immediately gating packets holds on to them to give the satelitte a 
> chance to digipeat and then prioritizes the digipeated packet. If none 
> is heard i believe it will still igate the original.
>
> -Jess
> KM6GVW
>
> On Feb 24, 2017 10:19 AM, "Robert Bruninga" <bruninga at usna.edu 
> <mailto:bruninga at usna.edu>> wrote:
>
>     I should know this…
>
>     Basics:   Igates pass all packets heard to APRS-IS, but all after
>     the first are filtered out as DUPES
>
>     Problem:  Satellite operators in simplex range of an IGate will
>     almost always show the first packet (uplink) and not the DESIRED
>     successful downlink digipeated Satellite copy.
>
>     Question (sorry I forgot the answer last time):  Where do we fix this.
>
>     I want to finally build us an IGATE here at the Academy in
>     Maryland, but I don’t want it to then filter out all of our
>     satellite packets that get digipeated!  I am totally dependent on
>     FINDU.COM <http://FINDU.COM> and the APRS-IS to capture and log
>     all APRS Satellite Telelmetry and user packets including ours and
>     nearby locals.
>
>     Bob
>
>
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