Order Tray | Contact Us | Home | SIG Lists

[aprssig] Coverage in the National Parks

Robert Bruninga bruninga at usna.edu
Thu Apr 7 13:50:15 UTC 2005


>>> jdw at eng.uah.edu 4/7/05 8:55:16 AM >>>
>If most digis already support WIDE1-1, why don't we 
>skip the WIDE1-1,WIDE2-1 step and go directly to 
>WIDE2-2?

Sure, WIDE2-2 also works everywhere and is the number
one main recommendation for everyone that will work 
everywherer as a minimum path.
The only reason that WIDE1-1,WIDE2-1 was added as
an option was for those rurual areas of the country that
have lots of FILL-IN "relay-only" digis.  Those areas are
suffering a seer dupe problem caused by the use of the
RELAY path, and so changing RELAY to WIDE1-1 
completely solves all that while still providing the same
performance for those users...

>And why WIDE2-1 instead of a second WIDE1-1?

Because when using the 2 hop path of WIDE1-1,WIDE2-1
the first hop has already been accounted for so the second
hop should already be decremented by one.  And as was
widely discussed here, just like one should ever use RELAY
in any position other than the first, the same goes for its
new substitute, WIDE1-1.  It should never be anywhere
but the start of a packet.  Otherwise it has the potential
to cause QRM from all the FILL-IN digis that support it.

Bob, WB4APR

-Jason
kg4wsv


_______________________________________________
aprssig mailing list
aprssig at lists.tapr.org 
https://lists.tapr.org/cgi-bin/mailman/listinfo/aprssig




More information about the aprssig mailing list