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AE5ME > TECH 18.10.15 19:44l 47 Lines 2456 Bytes #999 (0) @ WW
BID : MY0CLJZFOXZ4
Read: GUEST
Subj: //WL2K Success Story using Raspberry Pi, APRStt, and Dire Wo
Path: IZ3LSV<I0OJJ<UA6ADV<7M3TJZ<CX2SA<N9PMO<NS2B<N0KFQ<AE5ME
Sent: 151018/1726Z @:AE5ME.#NEOK.OK.USA.NOAM #:24012 BPQ1.4.63
From http://tulsadigitalradioclub.blogspot.com/
You've probably seen our postings on Dire Wolf with the Raspberry Pi. Keith
Kaiser from Kansas City Northland ARES had the following report to post on
linuxham group on their SET exercise. Very encouraging!
During the recent Simulated Emergency Test (SET) exersize conducted across the
county, Kansas City Northland ARES successfully used APRStt to provide position
information for each participant to Net Control. This was accomplished by each
member checing into the net using a short APRStt Touch Tone pad entry.
The entire operation was made possible by the use of the Dire Wolf TNC software
running on a Raspberry Pi. Dire Wolf, if you are unfamiliar with it is a
software modem and APRS encoder/decoder. The Raspberry Pi used two inputs, one
for each of the two primary repeaters being used during the SET. Each ARES
member was given a two digit number, 13 for example. Each of these numbers was
also assigned to the home location of the member by using latitude and
longitude.Dire Wolf has a built in macro system allowing a shortcut method of
programming. By setting a TTPOINT macro variable for each ARES member they were
able to show their location in just three button pushes. 13# which translates
to: WA0TJT at 39.202 , -94.602.
Additional macro variables were set up for each of the other location of
importance in our coverage area. For example each hospital was identified by a
TTPOINT, each Shelter, each fire station and a variety of others important
locations. A station could then report his/her positon at one of these by
simply sending 1398#. The 13 representing the callsign, the 98 the hospital
(for example) and the # to complete the APRStt entry.
Using the Dire Wolf macro facility additional capabilities were built using the
APRStt basic concepts. For example it became possible for a station to identify
their location by an abbreviated gridsquare. They were also able to add an APRS
status code to any of the APRStt messages they wished.
Using these methods 100% of our stations (about 21) were able to give there
location via APRStt and because Dire Wolf can also act as an iGate it allowed
them to be posted on aprs.fi.
I want to publicly thank John, WB2OSZ for his most excellent Dire Wolf
application, and Bob, WB4APR for APRStt, combined they made for a very
successful SET.
APRStt: http://www.aprs.org/aprstt.html
Dire Wolf: https://github.com/wb2osz/direwolf
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