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[aprssig] Fill-in Digis, routes in California

Robert Bruninga bruninga at usna.edu
Sat Mar 25 14:58:38 UTC 2006


Which is why I maintain the list of National PARKS with
APRS coverage and encourage APRS groups to help
put digis to serve areas with lots of APRS visitors.  See:
http://www.ew.usna.edu/~bruninga/aprs/aprs-parks.txt

And of course, that is my motivatin for the Proportional
Paths, so that mobiles can operate 1 or 2 hops most of
the time, but without re-programming can also get out
occasionally from a 3  hop area.   Bob

>>> wa8lmf2 at aol.com 03/24/06 9:29 PM >>>
apratt at bestbits.org wrote:
> Cap! Good to hear from you. We met at the ham show in Monterey earlier
> this year. I asked you what route to use in northern CA and I got my
> license by passing the test that day. 
>
> Are you saying that there is no place in CA that is three hops from an
> IGate? That is, you're either 1-2 hops away or out of luck completely?
> Not in the cities - I'm talking remote areas: Trinity National Forest,
> the North Coast, Lassen County, the Eastern Sierras, and the Desert
> Southeast, from Ridgecrest and Death Valley to Borrego Springs.
>
>   
Basically yes.   The urban areas and Interstates have more than  enough 
coverage to ensure two-hop coverage.  Leave those areas and you 
basically fall off the edge  of the earth.  There just aren't any 
digipeaters.   (There does seem to be fairly good coverage of the desert 
south-east from San Diego-area digipeaters and some on high peaks in 
western Arizona. )


You will find the same thing when you cross the Sierras on I-80, US-50 
or Rt 88.   You drive off the edge of the APRS world on the east slope 
of the Sierras until you reach I-15 in Utah.


The only thing that consistently works in these remote areas is 30-meter 
HF APRS that is capable of leaping over tall mountains and traveling 
500-1500 miles in a single hop. 






Stephen H. Smith    wa8lmf (at) aol.com
EchoLink Node:      14400    [Think bottom of the 2M band]
Home Page:          http://wa8lmf.com 

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"APRS 101"  Explanation of APRS Path Selection & Digipeating
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