Back to the question I really wanted answered: How far does Finn actually travel? I was surprised to learn that he typically runs only 10 to 20 percent more than I do, which was much less than I expected. Apparently, training him to stay close has been successful. But I was even more surprised by the difference in our respective elevation gains. I’ve always joked that Finn is part gazelle, and it turns out I might be right. According to his GPS data, on a run during which I cover 6.7 miles with 1,399 feet of elevation gain, Finn covers 9.0 miles with 5,651 feet of elevation.
The Astro 320 is a hand-held receiver with two antennas; it looks like a walkie-talkie, is lightweight and fits easily in your hand. The screen displays a map, or whatever other data you choose, using the various navigation buttons. Because I use the unit while running, I tuck the receiver in a pocket with the antennas sticking out and just let it record as I run. The dog collar (DC 40) is bright orange with plenty of room for adjustment. I used a permanent marker to add Finn’s name and phone number, and attached a loop of material for quick grasping (although the collar does have a small metal D-ring).
The brain of the device — the GPS receiver — is housed in a small black box from which a long, thin VHF antenna extends and transmits signals to the Astro hand receiver. The antenna curves with the collar so that it’s positioned above the dog’s neck. Finn, a small Aussie, weighs about 45 pounds, but the collar and its antenna don’t bother him or slow him down as he crashes through thick undergrowth in enthusiastic pursuit of ever-elusive squirrels and chipmunks. He associates the collar with fun!
The Astro 320 is designed for use with hunting dogs, and it took me a little while to get used to the terminology. For example, when I start a run, I select “New Hunt” and mark the starting point as “Truck” (although I could change that if I wanted to take the time). The factory default settings include various alarms to let you know if, for example, your dog has stopped moving; the first time I used the Astro with Finn, the only settings change I made was to customize it with his name. Another bit of hunting terminology came up after a run with friends, as we returned to our cars. My well-trained friends always offer treats to the dogs in the group. Hearing a chirping alarm on my Astro, I looked at the screen. It said, “Finn MacCool has treed his quarry!” Indeed: His quarry was Tracy, who was holding out a treat!
Ted Kerasote, author of Merle’s Door, has an Astro and uses it in an unusual way with Pukka, the dog he adopted after Merle died. “I’ve never used it on Pukka while we hike or ski together,” says Ted. “He is virtually always in sight, and when he departs, he returns within about five minutes. Instead, I’ve used the GPS on him when I’m home, writing. I put the GPS screen on my desk so I can see where Pukka goes during the day. This has been a fascinating look into how a dog who has his own dog door spends his time when not constrained by anything but his own curiosity.
“When the GPS has said ‘Pukka has treed quarry,’ I’ve been able to bike over to where he is and spy on him: lying on a friend’s deck waiting for them to come out and play fetch; over at Buck’s house, taking a snooze; or at the Kelly Café, hoping for a handout from the tourists.” (Ted’s new book, Pukka’s Promise: The Quest for Longer-Lived Dogs, is due out February 2013.)
While my passion is trail running, there are many uses for GPS with dogs — driving to and touring new places, geocaching, even kayaking, for example. Cecil Moore, who works for Garmin and cheerfully answered all my questions, said he once put the Astro GPS collar on his small dog Jack at the start of a 5K race and handed the receiver to his wife. Because his family knew exactly when Cecil and Jack were nearing the finish line, they were able to jump in and run the last several yards together. He also uses it on family vacations to the Lake of the Ozarks State Park, a large area where dogs are typically allowed off leash in campgrounds and on trails.