[aprssig] Setting up a KPC-3+ with a Davis WX station
Stephen H. Smith
wa8lmf2 at aol.com
Fri Jan 19 02:09:50 EST 2007
stephen.brown75 at gmail.com wrote:
>
>
> Some of my questions. How do I set a path instead of a generic alias?
> Is this done through the unproto command? For example, if I just want
> to send the data direct back to me, would my unproto be something like
> APRS via N1VLV-10? Or if I wanted to digipeat, APRS via KS4NG-7(our
> local digi that is closest to me), N1VLV-10?
The callsigns after VIA are the stations you are asking to serve as
digipeaters. Normally, on APRS (by contrast with classic connected
packet) this will be a generic alias callsign like WIDE2-2. You just
leave VIA blank if you want a direct path with no digipeaters getting
involved. You CAN place an explicit specific callsign in VIA (rather
than the generic WIDE2-2) if you want to limit digipeating to only one
specific digipeater (and prevent other digipeaters within radio earshot
from also relaying the data).
The station that is receiving this data (I presume N1VLV-10 is your
receiving station) and gating it into the Internet is not acting as a
digipeater in this role. It is the final destination only. It is
pointless to ask your destination station to digipeat the data again on
RF (which is what you are doing if you place your own callsign in the
"VIA" path of the weather station). [This assuming your station is
even configured to act as a digipeater.]
Normally an igate station will pass anything and everything it hears on
RF onward to the Internet, regardless of path. [ Unless explicit
filters have been set in the igate software to block certain kinds of
traffic, or if the RF user has placed "NOGATE" or "RFONLY" at the end of
his VIA path. ]
>
> Another thing, is there a way to set a WX symbol in the TNC itself, or
> am I to assume this is passed on from the datalogger in the WX station
> in the proper format to be xmitted?
Assuming you have the beacon text set to show the lat/long (as you
should) it's quite easy. See my web page at:
http://wa8lmf.net/aprs/APRS_symbols.htm
for details on how this is done.
--
Stephen H. Smith wa8lmf (at) aol.com
EchoLink Node: 14400 [Think bottom of the 2M band]
Home Page: http://wa8lmf.com --OR-- http://wa8lmf.net
NEW! TNC Test CD
http://wa8lmf.net/TNCtest
JavAPRS Filter Port 14580 Guide
http://wa8lmf.net/aprs/JAVaprsFilters.htm
"APRS 101" Explanation of APRS Path Selection & Digipeating
http://wa8lmf.net/DigiPaths
Updated "Rev G" APRS http://wa8lmf.net/aprs
Symbols Set for UI-View,
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