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<a class="moz-txt-link-abbreviated" href="mailto:vk5jfk@activ8.net.au">vk5jfk@activ8.net.au</a> wrote:
<blockquote cite="mid459890D7.4030206@activ8.net.au" type="cite">Should
the DataBits be 8 and not 7
<br>
<br>
Ben Lindner
<br>
VK5JFK
<br>
<br>
</blockquote>
<br>
<br>
Yes. 7-E-1 is an obsolete hangover from the mid 1970s when packet
was born. At that time, before personal computers, the dumb terminals
and Teletype machines widely used with minicomputers (and also with and
early TNCs) almost universally used 7 bits even parity. This was
before personal computing and binary files with 8-bit bytes. [Mass
storage was something you did with punched paper tape with 7 holes
across the width of the tape.] Somehow this configuration persists to
this day as the default setting in TNCs. For operation on APRS, you
want 8-bit transparency. For most TNC2 devices and similar, the TNC
init file needs to issue the commands<br>
<br>
8BIT OFF (meaning don't mask incoming 8-bit bytes off to 7 bits)<br>
<br>
AWLEN 8 (meaning use 8-bit long full bytes)<br>
<br>
<br>
I have modified the final release of the official TAPR firmware (Ver
1.1.9) to power up in 8-N-1 instead of the original 7-E-1 mode which
makes it much more convenient for modern computer applications. A
binary file of this modified firmware, which can be used to program an
EPROM, is on my website at:<br>
<br>
<a class="moz-txt-link-rfc2396E" href="http://wa8lmf.net/miscinfo/index.htm">< http://wa8lmf.net/miscinfo/index.htm ></a> <br>
<br>
On this download page of miscellaneous files and reference sheets, look
for the file <br>
<br>
TNC2-119b-8N1Mod.zip<br>
<br>
As a added bonus, this release of the TNC2 firmware includes KISS mode,
and alsd the first (and last) explicit support for APRS in the form of
a dumb APRS tracker mode. From an attached terminal, you command the
TNC into the tracker mode, disconnect the terminal and then connect a
NMEA-format GPS to the serial port. The TNC will then transmit raw
NMEA strings over the air in a manner similar to the dumb tracker mode
on a KPC3. <br>
<br>
<br>
Just above this item in my MISCINFO list is a quick hack I threw
together years ago in compiled Quickbasic (i.e. standalone .EXE) to
send the command sequence to get a TNC out of KISS mode. Look for <br>
<br>
KISS_OFF.EXE<br>
<br>
<br>
<br>
Rich Schiller wrote:
<br>
<blockquote type="cite"><br>
<br>
Don;t know if this helps or not, but the serial number for the TNC is
27446. There are also labels, handwritten, on some of the e-proms,
they are as follows:
<br>
<br>
State 1.09
<br>
WA4FLR-8 FAY
<br>
TheNet 2.11 st
<br>
</blockquote>
<br>
TheNet is a replacement EPROM for the standard TNC2-style firmware, to
use the TNC as a dedicated packet (not APRS!) digipeater. The TNC is
never going to function as a normal end-user unit with this firmware in
it. Remove this EPROM, erase it and reprogram it with the firmware I
describe above. <br>
<br>
<br>
<br>
<a class="moz-txt-link-abbreviated" href="mailto:tim_cunningham@mindspring.com">tim_cunningham@mindspring.com</a> wrote:
<blockquote cite="mid001401c72d56$201e6a10$5001a8c0@USF.ter.teradyne.com" type="cite">
<title>TNC-200 Assistance</title>
<meta http-equiv="Content-Type" content="text/html; ">
<meta content="MSHTML 6.00.2900.3020" name="GENERATOR">
<style></style>
<div><font face="Arial" size="2">Rich,</font></div>
<div> </div>
<div><font face="Arial" size="2">You must replace the TheNet EPROM
with a TAPR EPROM, a Paccomm EPROM, or a KISS (JKISS) EPROM. The
Paccomm EPROM v5.0 is still available from Pac-Comm at <a href="http://paccomm.com/">http://paccomm.com/</a></font></div>
<div> </div>
<div><font face="Arial" size="2">The KISS EPROM would work best if
you plan to use the TNC with any of the APRS software programs.</font></div>
<div> </div>
<br>
</blockquote>
<br>
KISS mode will work with UI-View, APRSplus and Xastir. It WON'T
work with the original DOSaprs, APRSpoint or WinAPRS. (None of these
programs support KISS-mode operation.) <br>
<br>
<br>
<br>
<br>
<br>
--<br>
<br>
Stephen H. Smith wa8lmf (at) aol.com <br>
EchoLink Node: 14400 [Think bottom of the 2M band]<br>
Home Page: <a class="moz-txt-link-freetext" href="http://wa8lmf.com">http://wa8lmf.com</a> --OR-- <a class="moz-txt-link-freetext" href="http://wa8lmf.net">http://wa8lmf.net</a><br>
<br>
NEW! TNC Test CD<br>
<a class="moz-txt-link-freetext" href="http://wa8lmf.net/TNCtest">http://wa8lmf.net/TNCtest</a> <br>
<br>
JavAPRS Filter Port 14580 Guide <br>
<a class="moz-txt-link-freetext" href="http://wa8lmf.net/aprs/JAVaprsFilters.htm">http://wa8lmf.net/aprs/JAVaprsFilters.htm</a><br>
<br>
"APRS 101" Explanation of APRS Path Selection & Digipeating <br>
<a class="moz-txt-link-freetext" href="http://wa8lmf.net/DigiPaths">http://wa8lmf.net/DigiPaths</a> <br>
<br>
Updated "Rev G" APRS <a class="moz-txt-link-freetext" href="http://wa8lmf.net/aprs">http://wa8lmf.net/aprs</a><br>
Symbols Set for UI-View, <br>
UIpoint and APRSplus:<br>
<br>
<br>
<br>
<br>
<br>
<br>
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