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<DIV><FONT face=Arial size=2><FONT face="Times New Roman"
size=3>Greetings,<BR><BR>I have just updated my website at </FONT><A
href=""><FONT face="Times New Roman"
size=3>http://www.qsl.net/n8deu/uidigi_eprom_settings.htm</FONT></A><FONT
face="Times New Roman" size=3> with some important changes for UIDIGI settings
affecting the APRS Paradigm.<BR><BR>The change affects UIFloodOptions and how it
performs under certain settings.<BR><BR>It is now recommended that
UIFloodOptions be set to 6 or simply UIFloodOptions=6. This will set bits 1 and
2. Bit 1 inserts the callsign before SSN-n and Bit 2 puts the has been
digipeated flag on SSN-0 instead of the last inserted callsign. This better
supports the APRS Paradigm and handles the digipeat flag more
appropriately.<BR><BR>To provide an example of UIFloodOptions=6 with
UIFloodCall=AL here are some examples using paths of SS2-2 and
WIDE1-1,SS2-1:<BR><BR>N8DEU>APRS,AL2-2:<BR>N8DEU>APRS,W4GPS-7*,AL2-1:<BR>N8DEU>APRS,KE4ROC-7,AL2*:<BR><BR>N8DEU>APRS,WIDE1-1,AL2-1:<BR>N8DEU>APRS,W4GPS-7*,AL2-1:<BR>N8DEU>APRS,W4GPS-7,KE4ROC-7,AL2*:<BR><BR>In
each of the above examples for UIFloodCall=AL and UIFloodOptions=6, the digi
callsign is inserted before the SSn-n call. When the SSn-0 is encountered the
digipeat flag is placed on the SSn-0 (AL2 in this example) instead of the digi
callsign. This is the correct method for the APRS Paradigm or at least the best
UIDIGI can do. There is a bug in UIDIGI that prevents subsequent SSn-n paths to
be added to the list after the first entry. UIFloodOptions=6 is considered the
desired performance under the APRS Paradigm for UIFloodOptions in
UIDIGI.<BR><BR><BR>If you are using UIFloodOptions=2 these are examples of how
it performs using paths of SS2-2 and
WIDE1-1,SS2-1:<BR><BR>N8DEU>APRS,AL2-2:<BR>N8DEU>APRS,W4GPS-7*,AL2-1:<BR>N8DEU>APRS,KE4ROC-7*,AL2:<BR><BR>N8DEU>APRS,WIDE1-1,AL2-1:<BR>N8DEU>APRS,W4GPS-7*,AL2-1:<BR>N8DEU>APRS,W4GPS-7,KE4ROC-7*,AL2:<BR></FONT></FONT></DIV>
<DIV><FONT face=Arial size=2><FONT face="Times New Roman" size=3>The important
distinction here is the digipeat flag is placed on the last digi callsign
substitution instead of the SSn-0 entry or in this case AL2. The use of this
setting is discouraged as it can severely affect the behavior in how other TNC
firmware deals with this behavior.<BR><BR>The UIDIGI documentation does not
address the bits 2 and 3 except in the "Changes.txt" file that comes with the
UIDIGI distribution. Bits 1 and 2 are the preferred setting for UIDIGI to
support the new APRS Paradigm. Unfortunately, there is no setting in UIDIGI that
will make this function work like the setting UITraceOptions=2 for the
UITraceCall. It is not easy to test these settings unless you are in a pure
UIDIGI environment as other digipeater settings can adversely inpact the results
as I quickly discovered.<BR><BR>Available settings for UIFloodOptions
are:<BR><BR> bit 0 WIDEN-0 will be repeated<BR> bit 1 insert
callsign before WIDEN-n<BR> bit 2 put has been repeated flag on
WIDEN-0<BR> bit 3 make call substitution on
WIDEN-0<BR><BR><BR><BR><BR><BR>73's,<BR>Tim - N8DEU<BR>Huntsville, Alabama,
USA</FONT><BR></DIV></FONT></BODY></HTML>