[aprssig] TNCX setups? (proportaional pathing?)
Robert Bruninga bruninga at usna.eduFri Jul 17 18:31:00 UTC 2009
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Ok, Here is best I can come up with the limitation of only 4 beacons in the TNC-X and the limitation of OFFSET to only a count of 255. Here goes: 2 F D F 1 F D F _ F D F 2 F D F 1 F D F _ F D F 2 F D F Where D is a DIRECT beacon for the digi Where 1 is a WIDE1-1 beacon of the digi Where 2 is a WIDE2-2 beacon of the digi Where F is a DIRECT beacon for the local Voice Freq Obj To make this interleave then for the TNCX would need (I think?) Beacon 1 inteval (x5s) :00756 Offset :0 DIGI every 63m at 0) Beacon 2 inteval (x5s) :00252 Offset :126 DIGI every 21m at 10.5m Beacon 3 inteval (x5s) :00756 Offset :252 DIGI every 63m at 21m Beacon 4 inteval (x5s) :00126 Offset :63 FREQ every 10.5 at 5.2m The result is a local direct Freq object every 10.5 minutes A local digi packet every 10.5 minutes (5 out of 6 times) A 1 hop digi packet every 31.5 minutes A 2 hop digi packet every 63 minutes Did I do this right? Give the count interval is every 5 seconds. Bob, WB4APR > -----Original Message----- > From: aprssig-bounces at tapr.org > [mailto:aprssig-bounces at tapr.org] On Behalf Of Robert Bruninga > Sent: Friday, July 17, 2009 1:21 PM > To: 'TAPR APRS Mailing List' > Subject: Re: [aprssig] TNCX setups? (proportaional pathing?) > > Im confused and need help from the TNC-X'ers... > > Does it have only 4 beacons total, and not a separate BT and > four other LOCATION texts? > Now I see that this is mixing the FREQ object and the digi > data... Also, there appears to be a limit of 255 in the offset > variable rpreventing the full implementation of the proportional > pathing intervals we used on the KPC3. > > Beacon 1 inteval (x5s) :00120 Offset :0 (10.min) FREQ > OBJECT > Beacon 2 inteval (x5s) :00360 Offset :240 (30.min) DIGI data > Beacon 3 inteval (x5s) :00720 Offset :120 (60min) DIGI data > Beacon 4 inteval (x5s) :00720 Offset :255 (60min) DIGI data > > Translating the above to MINUTEs I get > Beacon 1 every 10m DIRECT > Beacon 2 every 30m offset by 20m WIDE1-1 > Beacon 3 every 60m offset by 10m WIDE2-2 > Beacon 4 every 60m offset by 21.3m SS3-3 > > Below is how the New-N paradigm sets proportional pathing in a > KPC-3 so that the info goes out every 10 minutes locally, every > 30 minutes out 1 hop and every 60 minutes out 2 hops (While > still only producing 6 packets per hour instead of the 10 noted > above). > > Here is the proper proportinoal pathing: > Beacon 1 every 30 offset 0 DIRECT > Beacon 2 every 30 offset 10 DIRECT > Beacon 3 every 60 offset 20 WIDE1-1 > Beacon 4 every 60 offset 50 WIDE2-2 > > This RESULTS in one packet every 10 minutes, but most of those > are direct, and two per hour go via 1 hop to neighboring digis > and ONE per hour goes 2 hops. It is important to understand how > these are interleaved, and not just brute-forced which produces > dupes. > > But if the 4 beacons have to be shared with the FREQ object, > then we need to rethink this in terms of the limitation of the > 21.3 miunte offset limit. > > Maybe he got it right? > > Once I have corrected these items I'll add these TNC-X settings > to the web page: > www.aprs.org/fix14439.html > > Hope that helps. > Bob, Wb4APR > > > _______________________________________________ > aprssig mailing list > aprssig at tapr.org > https://www.tapr.org/cgi-bin/mailman/listinfo/aprssig >
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