[aprssig] Msg reply path

Stephen H. Smith wa8lmf2 at aol.com
Sun Oct 6 23:13:07 CDT 2013


On 10/6/2013 10:42 PM, Tony VE6MVP wrote:

>
> I've never configured a digi so I'm not at all sure of the details. However one
> explanation given to me was that WIDE1 is a different setting than WIDE2 inside
> the digis and needs to be setup differently.


See my article at

<  http://wa8lmf.net/DigiPaths >

for the history and rationale behind the "double WIDEn-N path" ; i.e. 
WIDE1-1,WIDE2-1 .

Short form:  Originally WIDE1-1 was handled no differently than higher values 
of n-N.   More recently it HAS been handled differently in order to allow older 
TNCs, that lack the smarts for decrementing WIDEn-N digipeating, to be used as 
first-hop low-level home fill-in APRS digis.


So , assuming my understanding is
> correct, you might only want to setup SS7.  If you wanted to setup SS6 and SS5
> those would be additional paths setup inside the digi.
\

No.  As just explained in my previous post, you only set the base "callsign" 
into the digi; i.e. SSn-N.   Any values of n and N received by the digi are 
processed automatically by decrementing the value of "N" by one.


>
> But I sure could be wrong.
>
> Hmm, and indeed James VE6SRV had to manually configure the LLOYD digi to
> support SK for Saskatchewan prefix in addition to the already configured AB.
>

Which he would have done by setting

   UIFLOOD WIDE,AB,SK

I.e. by specifying only the base pattern for the hop, not the explicit values 
of n and N.    In turn the digi will respond to anything it hears (WIDE1-1, 
WIDE3-2, AB7-4, SK6-4 or any other value) by decrementing the value of the 
second digit (the -N) by one.


___________________________________________________


--

Stephen H. Smith    wa8lmf (at) aol.com
Skype:        WA8LMF
EchoLink:   14400  [Think bottom of the 2-meter band]
Home Page:          http://wa8lmf.net


  Long-Range APRS on 30 Meters HF
     http://wa8lmf.net/aprs/HF_APRS_Notes.htm

High Performance Sound Systems for Soundcard Apps
    http://wa8lmf.net/ham/imic.htm
    http://wa8lmf.net/ham/uca202.htm

"APRS 101"  Explanation of APRS Path Selection & Digipeating
   http://wa8lmf.net/DigiPaths





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