If you use a different collar Other than a Tracker one I do not believe you can use the fine tune feature also when Tracker builds them they pair it with the collar they send. The number is just not matched but paired for a much better signal.
The intello collar is nice but the battery life stinks. Just because it has 2 antenna does not men it picks up better, The Strike collar when set up properly will give you about 700 hours of use and will be as strong as the Intello. Also Tracker put on a new beefier antenna on the Strike that some people have said gets a better signal also.
I have used a marshall with the tracker unit and I do not see why people say they are better. In the cold weather you need to run a lithium battery or it dies fast. The range is also not as far as my strike either.
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