[aprssig] TEMPn-N and callsign digipeating

[William McKeehan]

If all of the TEMPn-N digi's are on 144.99, then when you transmit back out on
144.39, there will not be any digi's around to hear it, right?

On Sun, May 28, 2006 6:05 pm, Robert Bruninga said:
>>>> 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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-- 
William McKeehan
KI4HDU
Internet: mckeehan at mckeehan.homeip.net
http://mckeehan.homeip.net

Leave the beaten track occasionally and dive into the woods.
Every time you do so you will be certain to find something that you have never
seen before.
     - Alexander Graham Bell