The Uniden is programmed to alert to the fixed frequencies used by mobile extenders, the low-powered vehicle-mounted transmitters used to link an officer's walkie-talkie with the cruiser's powerful two-way radio.

The feature was first used in the Colt CHiPs detector, a scanner into which these mobile extender frequencies could also be input. Designed by Phil Henry, this scanner was later acquired by Uniden, redesigned and repackaged as the BCT-10 BearTracker, later replaced by the BCT-12.

In its heydey it was great. But no more. You can read the Uniden BearTracker BCT-12 scanner review on my Web site.

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Craig's Sig:

Protect yourself: Learn everything you need to know about police radar, lasers and laser jammers and radar detectors from the man Automobile magazine calls "the world's most-quoted authority on speed-measuring technology and tactics, and an underground legend among speeders"

Read Driver's Guide to Police Radar, the definitive guide to radar, lasers, time/distance computers and police speed-enforcement tactics

Member of The National Motorists Organization since 1990.