No subject

"classic"
packet and APRS,  the path settings are the callsign(s) of the =
station(s)
being asked to relay the packet.  In classic packet, these would be =
the
actual calls of the stations involved; i.e. you had to know in advance =
the
calls of the stations involved to get a packet relayed.  In APRS, =
all
stations respond to  the same generic "callsigns" of =
WIDE1-1,
and/or WIDE2-n.&nbsp; &nbsp; <br>
<br>
Current &quot;New Paradigm&quot; APRS depends on digipeaters being able =
to
actually CHANGE these &quot;callsigns&quot; as packets pass through them =
--
something classic packet NEVER did. &nbsp;&nbsp; APRS digis modify these
&quot;calls&quot; as they pass the packet on, to track and control the =
number
of relay hops. &nbsp; For example,&nbsp; WIDE2-2 becomes WIDE2-1 which =
becomes
WIDE2-0 as a packet passes through 3 successive digis. &nbsp; &nbsp; =
This
handling of callsigns is unique to APRS.&nbsp;&nbsp;&nbsp; &nbsp; <br>
<br>
Many of the new-breed low-cost KISS-only APRS-only TNCs such as =
TinyTrack 4,
Tracker2, TNC-X, AGW uTNC, etc&nbsp; CAN do APRS-style digipeating
stand-alone.&nbsp;&nbsp; The ONLY &quot;classic&quot; TNCs able to do =
this
off-the-shelf stand-alone (i.e. unassisted by computer programs), were =
the
Kantronics KPC3 family TNCs.&nbsp;&nbsp; PK-232s, TNC2s, etc require a =
computer
program running through a KISS interface to do modern APRS digipeating. =
<br>
<br>
You can endow almost any TNC-2 clone, such as your MFJ with this ability =
by
replacing it's OEM firmare with the freeware UI-Digi firmware that =
converts the
TNC2 to a dedicated APRS digipeater.&nbsp; However it becomes STRICTLY a
stand-alone digipeater, and can no longer be used for local =
transmit/receive by
a an attached PC. &nbsp; <br>
<br>
<br>
See the full history and underlying logic of APRS digipeating here on my
website:<br>
<br>
&quot;APRS 101&quot;&nbsp; Explanation of APRS Path Selection &amp; =
Digipeating
<br>
&nbsp; <a =
href=3D"http://wa8lmf.net/DigiPaths">http://wa8lmf.net/DigiPaths</a> =
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<p class=3DMsoNormal style=3D'margin-bottom:12.0pt'><font size=3D3 =
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--<br>
<br>
Stephen H. Smith&nbsp;&nbsp;&nbsp; wa8lmf (at) aol.com <br>
=3D=3D=3D Now relocated from <st1:City w:st=3D"on">Pasadena</st1:City>, =
<st1:State
w:st=3D"on">CA</st1:State> back to 8-land (<st1:place =
w:st=3D"on"><st1:City w:st=3D"on">East
  Lansing</st1:City>, <st1:State w:st=3D"on">MI</st1:State></st1:place>) =
=3D=3D=3D<br>
Skype:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; WA8LMF<br>
Home Page:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <a
href=3D"http://wa8lmf.net">http://wa8lmf.net</a><br>
<br>
=3D=3D=3D=3D=3D&nbsp; <st1:place w:st=3D"on">Vista</st1:place> &amp; =
Win7 Install Issues
for UI-View and Precision Mapping =3D=3D=3D=3D=3D<br>
&nbsp;&nbsp;&nbsp; <a =
href=3D"http://wa8lmf.net/aprs/UIview_Notes.htm#VistaWin7">http://wa8lmf.=
net/aprs/UIview_Notes.htm#VistaWin7</a><br>
<br>
*** HF APRS over PSK63 ***<br>
&nbsp;&nbsp; <a =
href=3D"http://wa8lmf.net/APRS_PSK63/index.htm">http://wa8lmf.net/APRS_PS=
K63/index.htm</a><br>
<br>
<br>
<br>
<br>
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