[aprssig] TEMPn-N and callsign digipeating

[Robert Bruninga]

>>> wa7nwp at jnos.org 05/28/06 12:54 PM >>>
>... getting some TEMPn-N activity here for Field Day. 
>...   Does a TEMPn-N D700 mobile digi automatically
>digipeat on the stations callsign or will it be necessary 
>to add it to the UIDIGI settings?   

Im not sure I follow, but TEMPn-N packets should work
just exactly like WIDEn-N packets, but of course will
only go through other TEMPn-N digis.  But since all
Field Day operations is on 145.01, instead of 144.39,
then other digi calls are not involved.

Now this does bring up anotehr good idea for EMERGENCY
preparedness.  That is, local GURU's could decide what
local battery backed up-reliable digis BEST serve their
area in times of disaster, and maybe add TEMPn-N
support to those SPECIAL digis.  THis way, when the
disaster hits, and we might need to depend on TEMPn-N
paths, a few widely dispersed TEMPn-N digis could
really provide some support.

BUT to get them away from any APRS QRM, maybe these
TEMPn-N digis sshould also be on another frequency.
AND since there is no way to add TEMPn-N to existing
digs (all only support one kind of traceable n-N at a time).
Maybe we are talking here about adding TEMPn-N
to the INFRASTRUCTURE already on a local underused
digital channel.  Then emergency APRS traffic can travel
WELL on this alternate channel without the QRM from
144.39.

MAYBE the best place for this network is the APRS alt-input
channel of 144.99!   Remember, that being +600 from
144.39 lets this be an ideal place for low power trackers
to get into the network.  But it couild also be the backup
TEMPn-N network too!  SInce TEMPn-N would not normally
be used except in emergent situations...

OK, how's this...
APRS ALT-INPUT digis listen on 144.99 and digipeat to
144.39 for low power trackers and special opeations.
These ALT-INPUT digis use the UIDIGI ALIAS of
WIDE1-1 so that mobiles and HT's using W1-1,W2-1
will get digipeated over to the 144.39 frequency.

BUT this same digi has TEMPn-N in its UITRACE parameter
so that it also acts as a TEMPn-N (as a final hop over to
144.39)....  This way, these HIGH-SITE digipeaters that
are listening for low power trackers, can also be our
back-up network for listening to TEMPn-N digis (700
mobiles) when needed!   Wow, is this a good idea, or am
I missing something?

Bob, Wb4APR


I'm thinking we may have to always add the local call
as one of the four UIDIGI aliases.

73,
Bill

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