[aprssig] The Ultimate LA Basin Fix!

[Robert Bruninga]

*** AH HA!!!  

There is a MUCH better solution for the very unique geography
of the LA basin that we have overlooked.  KISS!

Theoretically, a SINGLE digi in LA with 1 hop could handle
all 300 stations within 100 miles!  The only reason it cant,
is because of QRM from the 16 or more copies of every
2 hop packet launched.  Thus more and more digis had to
spring up to get closer to local stations to overcome the QRM,
but this requires more hops!

Thus, MELT-DOWN!

For LA Basin, completey forget about the SUPERSITES and
forget about 9600 baud.  We can do it all on 1200 baud
with only 3? digis yet still support all 300 stations!

See how:
http://web.usna.navy.mil/~bruninga/aprs/fixingLA.html

Now of course, the local packet gurus can tell us the
exact numer of BIG-DIGIS that would be optimum, but
I'd sure like to hear their opinion of a 1 hop solution.

You mgiht ask how did I get to a 300 ALOHA circle while
I have been preaching the limits of the typical 60 ALOHA
circle?  Because the 60 results from having to include all
the dupes from all the multiple digis that are all replicating
the typical 2 or 3 hop paths that many people are using.

Simply use the ALOHA algorithm on the case of ONE hop
and only 1 digi and you get about 180 stations.  Go cross
band full duplex and this doulbes to 360!  Bingo!

Read the plan above.  Think about it!

de Wb4APR, Bob