View Full Version : Converting kenwood TM-v7A for APRS
03-11-2010, 10:46 PM
I have a TM-V7A; is there a way to convert for APRS use...using the new kenwood rc-d710 or maybe another weay....thanks and 73 all...Mark/K5JMR
03-12-2010, 03:32 AM
You can use it for APRS transmit only, simply by mating it with an aprs controller. There are a number of them available. The packet socket is on the front of the radio, left side as I recall. You can buy the new control face for increase capability. Check the Kenwood site for details, I haven't used one on my TM-v7 though I've seen them demonstrated.
I've used my TM-V7A for APRS in several different configurations:
The last two used a KPC3+ TNC.
But to convert a TM-V7A into something with built in/embedded APRS abilities like the TM-D710A. No. No way to do that. You'll have to use an add-on of some kind, such as the ones I've mentioned, their new 'do it all' head (RC-D710) (http://www.kenwoodusa.com/Communications/Amateur_Radio/Mobiles/RC-D710), or some other device.
03-12-2010, 05:45 PM
The RC-D710 is supposed to work with the TM-V7A, but I don't think it will replace the control head on that rig like it will on the TM-V71. I think it will act more as a standalone TNC/APRS terminal. You will need the option PG-5J adapter to connect the RC-D710 to the TM-V7A via the packet DIN connector. If you intend to also use it as a packet TNC or to interface with a PC-based APRS program, you will also need a PG-5G cable.
I'd suggest you download the manual http://www.kenwoodusa.com/UserFiles/File/UnitedStates/Communications/AMA/Manuals/RC-D710%20Owners.pdf
Read the sections on connecting and operating it in PG-5J mode. That will show you what it will do. Don't be confused by the sections on using it with the the TM-V71. On the TM-V71, the RC-D710 essentially upgrades that radio to the TM-D710.
You have other options, but the RC-D710 is probably the neatest one for APRS. Byonics has a unit, TinyTrak4, that can function as a packet/APRS terminal, too. Byonics also sells pre-assembled cables, optional GPS modules, displays, and keyboards. You can buy it as a kit or assembled and tested.
I'd suggest downloading their manuals and reading them before buying.
03-14-2010, 04:39 PM
THANKS FOR ALL THE INPUT!