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[aprssig] Beacon settings

Stephen H. Smith wa8lmf2 at aol.com
Mon Feb 4 17:58:02 UTC 2008


Alan M. Fudge DVM wrote:
>
> So I have a unit and am "playing with it. I note the HTs are set for 
> RELAY, WIDE. And looking at some paths for known 4WD (Aprs query), it 
> appears that the Kenwood mobiles are set for the same. 
>
> Knowing that this type of setting is consider passe' and for 4WD to 
> continue to comm APRS (among themselves, command post and to internet 
> when remotely managed) in mostly rural county AND to have them serve 
> as digipeaters for the HTs, what settings would be optimal.
>

These are the now obsolete path settings that the Kenwoods default to 
out of the box.  You MUST enter the setup menus and change these to 
something like "WIDE1-1,WIDE2-1" .


> And please define what RELAY means.
>

It's the now obsolete predecessor to "WIDE1-1"  (The first hop in a 
digipeater path that either low-level digis like home stations -OR- 
high-level wide area digipeaters respond to.)  

The convention was changed several years ago to work around 
incorrectly-implemented firmware in Kantronics KPC3 TNCs that are widely 
used as digipeaters. (KPC3s processing paths with RELAY or WIDE will 
stupidly retransmit their own previously-digipeated packets, if they 
hear them retransmitted by another digi,  needlessly increasing channel 
congestion,  .  KPC3s will effectively suppress duplicate 
re-transmissions of packets they have already digipeated when processing 
paths with WIDEn-N in them.  )  

Full details on the evolution and rationale of APRS path settings here:


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



>
> Finally I was under the impression that the TH-D7 also could digipeat, 
> but was told no.

It can IF it is operating in KISS mode under the control of a computer 
running a program like UIview.    Otherwise NO.








--

Stephen H. Smith    wa8lmf (at) aol.com
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