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Here’s what the shark fin on cars is for

That cool-looking "shark fin" on the roof of your car is an important piece of technology.
Targeted at automotive applications, a new “Shark Fin” style modular antenna assembly allows simultaneous functionality of four frequency bands in one compact package The patented antenna offers ...
Laird Technologies, Inc. (www.lairdtech.com) has introduced a “shark fin” style modular antenna assembly for automotive vehicles. The patented antenna offers SDARS, GPS, AMPS, and PCS antenna coverage ...