[aprssig] Gawd This APRS Path May Reach Mars!

[mwbesemer at cox.net]

This kind of stuff is a good argument to be able to EXCLUDE certain 
stations from being digi'd/gated.

Mike
WM4B


On Wed, Feb 2, 2011 at 1:42 AM, Stephen H. Smith wrote:

> On 2/1/2011 7:19 PM, Eric Hansen wrote:
>> Can someone give me a run-down on the n-N pathing? wide1-1,wide2-1 
>> means hop from a fill in repeater, two from a mountain top? What does 
>> that guy's path mean?
>
> It's an insane path that, when it succeeds, would propagate TEN hops 
> in an ever-widening circle in every direction, potentially activating 
> HUNDREDS of digipeaters!    The actual transmission was in Los Angeles 
> and was triggering every digipeater in the San Francisco area and 
> points two hundred miles north, San Diego, Sacramento, Las Vegas and 
> more.
>
> The first hop WIDE1-1  could be processed either by a home fillin -OR- 
> a high level digipeater.   The second part WIDE2-1 will yield one hop, 
> but only from a high-level digi.         In a WIDEn=N expression, the 
> first digit indicates how many hops requested.  The second digit is 
> decremented by each digi that responds to the path, and indicates how 
> many hops are remaining.    Traditionally, this second expression 
> would be WIDE2-2 to start with, allowing TWO hops via high-level wide 
> area digis.
>
> However, to reduce the congestion in populated areas where a single 
> hop by a wide-area digi is all that is needed, one "pre-uses" one hop 
> by setting WIDE2-1 instead.
>
>
> Full details on the history of WIDEn-N and how it works are here on my 
> website:
>
> "APRS 101"  Explanation of APRS Path Selection & Digipeating
>   http://wa8lmf.net/DigiPaths
>
>
>
> 
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> Stephen H. Smith    wa8lmf (at) aol.com
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