[aprssig] Digital repeater Objects

Wed Oct 27 19:37:09 UTC 2010

I saw a local DMR repeater without the frequency as a name.  SCH-TRBO

I contacted the sysop and he is aware of the Local Info, but is in a quandry how to set up the name and comment field given the linited mini-web page.  I can think of some options, but wonder if this has been discussed and I ignored it.

Have there been discussions/suggestions on how to "Object" (note the verbization) the different digital systems?  DMR, P25 D-Star, possibly others.

I speculated as follows
444.025+P = P25
444.025+? = ?
444.025+D = D-Star or DMR  Or perhaps 444.025+M = dMr
Then the DMR color code in the next line indicates it is a DMR system as well as the color code - similar to T107 indicating both CTCSS and freq....

--
 73, Steve, K9DCI   USN (Vet) MOT (Ret) Ham (Yet)

Up to date APRS Beginner Guide - updated Apr-2010
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--
You know that sea of entropy we were going to drown in?  Well, upon closer examination, it turns out to be stupidity.  S. Noskowicz 1987

--- On Tue, 10/26/10, Robert Bruninga <bruninga at usna.edu> wrote:

> From: Robert Bruninga <bruninga at usna.edu>
> Subject: Re: [aprssig] OLD KPC-3's version 5 etc..
> To: "'TAPR APRS Mailing List'" <aprssig at tapr.org>
> Date: Tuesday, October 26, 2010, 3:31 PM
> > Bob, Would KPC-3 version 6.0
> have the same/similar behavior? 
> > That ROM came out in 1995 and supported GPS to TNC
> connection.
> > I could boot mine up and see how it behaves if you
> suggest
> some settings.
> 
> Here is my memory.  Can anone correct any details?
> 
> 1) From ancient times, all TNC's had a MYCALL and an
> ALIAS.
> That's when we started APRS with RELAY and WIDE for
> digipeating.
> Everyone's TNC was set to the ALIAS of RELAY.  And
> their own
> MYCALL.
> At the digipeters, The MYCALL was the DIGI call, and the
> ALIAS
> was made to be WIDE.
> 
> 2) Then the first APRS TNC's by PacComm in 1996 added
> callsign-substitution.  THen the digi could digi on
> RELAY or
> WIDE (or any 3 generic calls) and it would substitute its
> callsign into the used-up digi slot.  PacComm called
> these
> ALIASES 1, 2 and 3
> 
> 3) Then in 1998 Kantronics added WIDEn-N which decremented
> N on
> each digipeat.  That was in the UIFLOOD parameter but
> there was
> no substitution so the packets were untraceable unless
> TRACEn-N
> was used by the user.
> 
> 4) Somewhere in there DIGI_NED and UIDIGI Roms came
> out.  The
> added up to 8 aliases, 8 substitutions and multiple filters
> and
> paths.  This let any and every digi owner make his
> digis UNIQUE
> to the point that APRS was hopelessly inconsitstent, not
> standardized, and hopelelssly fragmented...  A bad
> situation..
> And getting worse with every new idea for filtering,
> exclusions
> and path modification scheme ego's could come up with...
> 
> 5) Then in 2004 without any new hardware changes we
> greatly
> SIMPLIFIED all APRS paths and simply moved WIDEn-N to the
> Traceable UITRACE parameter and called it the New-N
> Paradigm.
> And gave a lot of standard recommendations for all the
> other
> parameters... Including frequency object bulletins for the
> locally recommended voice repeater.
> 
> The rest is history.  Although, now almost 7 years
> later at
> least HALF of the existing digis have not changed their
> settings
> to match the 2004 receommendations... Sheesh..
> 
> So, If a KPC-3 does not have the UITRACE or UIFLOOD or
> UIDIGI
> command, then it can only do #1 above in my thinking, and
> then
> the only network you can build is to make all Wide area
> digis
> respond to the alias of "WIDE2-1" and all fill-in digis
> respond
> to the alias of "WIDE1-1".  Of course the network will
> work for
> 2 hops, but is NOT TRACEABLE and therefor
> un-troubleshootable
> except with a lot of talent and testing.
> 
> Earl rightfully suggested making the big wide area digis
> which
> also have local coverage without any fill-in WIDE1-1 digis
> to
> respond to both WIDE1-1 and WIDE2-1 by making the MYCALL =
> WIDE2-1 and making the ALIAS be WIDE1-1.
> 
> But in this kind of netowrk NOTHING beyond 2 hops is
> possible
> without lots of dupes folding back on themselves.  And
> without
> distinct MYCALLS, then point-to-point paths longer than 2
> hops
> are also not possible.
> 
> Bob, WB4APR
> 
> > Mike KE4YGT
> > 
> > ----- Original Message -----
> > From: "Robert Bruninga" <bruninga at usna.edu>
> > To: <aprssig at tapr.org>
> > Sent: Tuesday, October 26, 2010 1:19 PM
> > Subject: [aprssig] OLD KPC-3's version 5 etc..
> > 
> > 
> > > Does anyone remember the old KPC-3's?
> > >
> > > We have a country that only has old
> KPC3's....  I know they
> do
> > > not have WIDEn-N support... But Do they do
> callsign
> substitution
> > > (version 5.0 and 5.1)?
> > >
> > > I'm looking for a way to advise them  (in
> their limited
> network)
> > > to at least tier their digis.  But I guess
> that is what the
> > > original RELAY and WIDE was all about. 
> Every TNC could do
> relay
> > > and then set only the big ones for WIDE...
> > >
> > > The New-N equivalent (but using the same old
> hardware) would
> be
> > > to set the big wide area TNC's to be "WIDE2-1"
> aliases and
> all
> > > the other fill-in-digis to be "WIDE1-1" alias
> digis.  But if
> > > they can only have one alias, then the big digis
> cannot also
> do
> > > the WIDE1-1.  But at least it give a 2 tier
> solution...
> > >
> > > Been a long time since I thought this one out.
> > >
> > > Bob, WB4APR
> > >
> > >
> > > _______________________________________________
> > > aprssig mailing list
> > > aprssig at tapr.org
> > > https://www.tapr.org/cgi-bin/mailman/listinfo/aprssig
> > 
> > 
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> > 
> 
> 
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