We've also built a map page into the unit so you can tell where you are in relation to your vehicle or nearby roads, as well as showing where you and your dog have been in relation to the area you're hunting. I find this page to be particularly useful when hunting big open prairies or CRP grass. A lot of times, I'll wonder if I've hunted a specific piece of ground…with the Astro, I can look down at the map page and see my track and exactly where my dogs and I have hunted.

The GPS unit can be mounted on either a collar or on a shoulder harness.

BW: What about when we're hunting with two or more dogs--is the unit able to track more than one dog at a time?

TG: Not a problem. You can actually track up to 10 dogs per receiver, so it's an expandable system.

BW: How often is the dog's location updated to the handheld unit? And what about range--how far out can our dog be and still show up on the receiver?

TG: The collar gives you a location update every five seconds, and battery life is about 10-12 hours on the rechargeable collar and about 20 hours on the receiver, which is powered by two AA batteries.

Like any other radio transmission, range is largely dependent on line-of-sight transmission. If you're in open, flat country, you should be able to see your dog up to five miles away, which is way beyond the range of our bird dogs.

BW: I notice the Astro looks like a normal handheld GPS receiver.

TG: Sure does. In fact, the Astro is based on our most popular unit for outdoorsmen, the GPSMAP 60CSx. You get a top-of-the-line handheld GPS with a sunlight-readable color display and a highly sensitive GPS receiver that works even under a thick tree canopy or in deep canyons.

Another really cool feature is the "covey counter." When you find birds, you can mark a waypoint that tells you the precise location, time of day and elevation where you got into the birds. In addition, you can mark the number of birds flushed and even how many you shot if you like. At the end of the day or over the course of a season, I find this gives you a great look at the behavior of game and what areas are most productive.

We've also developed a new list of icons for the Astro, so you can easily mark and identify bird flushes, food plots, tree stands, sign, ATVs and other hunting-related features. You can download and save all of your waypoints and tracks on a computer and even share them with other Astro users…not that I'd ever really want to share any of my secret spots!

BW: So we actually do have a stand-alone GPS in addition to the benefit of knowing where our dog is and when he's moving or standing birds. Ted, this sounds like the best thing to come along since sliced bread…or the arrival of the e-collar.

TG: Yes, and we're pretty excited about the Astro. We think hunting dog owners will quickly realize there's nothing else out there like it.

For more information on the Astro, including an interactive demo, go to www.garmin.com/astro