I recently started experimenting with amateur radio, and part of what I'm playing with is the Automatic Packet Reporting System (APRS). K6JK-9 is my mobile radio, a Kenwood TM-D710A (and probably in my car). K6JK-7 is my handheld Yaesu VX-8DR. You can see where I was when I sent my most recent beacons right here:
And here is a link to when I took a radio with me to the top of Haleakala on Maui. Just because I think that's pretty cool.