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[aprssig] WIDE settings (was A test for APRS in some lessortraveled Western areas)

Cap Pennell cap at cruzio.com
Sun Sep 9 00:12:08 UTC 2007


Fine business, Keith.  How it works is one thing.  Why it works is because
everybody helps each other out.

As for n-N, the n (as a courtesy) indicates the station operator's
originally intended number of digipeater hops and the N indicates how many
hops of that number are remaining when the packet is received.

A couple of oft' recommended references:
http://web.ew.usna.edu/~bruninga/APRS-docs/DIGIS.TXT
http://wa8lmf.net/DigiPaths/index.htm

Hope this helps.
73, Cap KE6AFE

> -----Original Message-----
> From: aprssig-bounces at lists.tapr.org
> [mailto:aprssig-bounces at lists.tapr.org]On Behalf Of Keith Stevenson
> Sent: Saturday, September 08, 2007 16:37 PM
> To: TAPR APRS Mailing List
> Subject: Re: [aprssig] WIDE settings (was A test for APRS in some
> lessortraveled Western areas)
>
>
> Cap,
>
> I think that you may have misunderstood the intent of my
> question.  I'm trying to understand how and (more importantly)
> why the protocol works.  There seems to be some subtleties that
> if misunderstood can cause grief for a large number of users.
> I've read the new n-N paradigm papers (some of them several
> times), and I believe I understand how setting an appropriately
> small value of N keeps the traffic local and avoids out of area
> QRM.  My frustration stems from the fact that I've been unable to
> find a discussion of the relationship between n and N.  I'm
> looking for a deeper understanding than "please use this setting
> to avoid generating QRM."
>
> Also, I am using the example of how one would select the value of
> n for a digi as just that, an example.  I find that there is a
> lot more information about appropriate settings for end-stations
> than for the digis and I'm simply trying to learn.  I have no
> intention of blindly setting up a digi.  In fact, I have yet to
> transmit a single APRS packet because I do not yet feel that I
> have an adequate understanding of how APRS works.  I'm one of
> those obsessives that is compelled to learn as much as possible
> about a topic.
>
> 73,
> Keith Stevenson, KI4YBQ
>
>
>
> On 9/8/07, Cap Pennell <cap at cruzio.com> wrote:
> You guys could _really_ benefit from _another_ careful read-through of
> http://web.ew.usna.edu/~bruninga/aprs/fix14439.html
> and the links from that page.
>
> Best bet: WIDE1-1,WIDE2-1 mobile; WIDE2-2 (or less) fixed or base.





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