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How would a sub-dermal GPS receiver, um, receive? A better bet might be the kind of radio triangulation that law ... phone companies to do for them. It's less accurate but the technology seems like a better match (no line-of-sight issues).

The other problem is the "fudge factor" in civilian GPS technology. I can't remember the exact factor, but I believe all non-military or law enforcement receivers have to have an added fudge factor of something like 1500 meters.
That's a lot on a roaming dog :-) A homing signal is far more logical.
Lynn K.
The other problem is the "fudge factor" in civilian GPS technology. I can't remember the exact factor, but I believe all non-military or law enforcement receivers have to have an added fudge factor of something like 1500 meters.

The US military removed the fudge factor a few years ago - I believe that the accuracy is now less than 10 meters.

Matt. Rocky's a Dog.
The other problem is the "fudge factor" in civilian GPS technology.

If you mean Selective Availability, Clinton got it removed. The Coarse Acquisition error is 15 meters (95% of the time). With WAAS you can do better.
1500 meters.

1500 meters is almost a mile - you could do better than that with awristwatch and sextant (and skill).
Mike
Hello Fellow Dog Lovers, After years of trying to find my mischevious pooch whenever she escaped from the house, I ... she gets into serious trouble. Please check out my website and let me know what you think of the product.

You know, all this conversation about GPS is lovely, but I have one question...

Isn't it safer and cheaper to train your dog not to bolt through doors? Maybe put a tether or a fence in the backyard?
If a dog repeatedly escapes, it seems to me to be a management issue.

Tracy
Tracy,
I agree, training is very important! A GPS collar is not a substitute for training. However, there are very real situations where good dogs (trained or not) leave their normal grounds and venture into the unknown. My lab would explore the neighborhood when the meter person forgot to close the gate behind him. Try keeping even a well trained hound contained when it scents a rabbit nearby. Stuff happens and a GPS collar can an effective tools in finding your pet quickly.

Regards,
R
You know, all this conversation about GPS is lovely, but I have onequestion... Isn't it safer and cheaper to train ... or a fence in the backyard? If a dog repeatedly escapes, it seems to me to be a management issue.

I'm not real familiar with hunting practices. But when people hunt with dogs, they're usually unleashed, aren't they?
Perhaps such a product would be useful for them. I live in an area where many people hunt - and many people lose their hunting dogs.

flick 100785
Tracy