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Automotive GPS Radio Interfacing for APRS use?
I'm a new owner of a 2004 Jeep Grand Cherokee with
the optional RB1 in-dash GPS nav radio combination. This particular option has been available for over a year or more for older Chrysler model Jeeps and selected cars. I looked up the specifications for the GPS-radio unit, http://www.wjjeeps.com/nav.htm#SPEC , and found that the GPS section uses a communication specification called "J1850 bus specification for NAV information" for the data format. Has anybody tried to interface to a unit like the RB1 for use as a mobile GPRS station? I have found some information on the J1850 bus specification and some hardware at http://www.intrepidcs.com/vspy/ . Has anybody used this for GPRS application? There is some free software available if you use a Palm based PC at http://www.intrepidcs.com/vspy/vspyce.htm for using the network interface hardware. -- Leland C. Scott KC8LDO ARRL Member NCI Member Charter member of the Lawrence Technological University Wireless Society W8LTU |
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