The stereo unit is built around a two-way system featuring a soft dome tweeter and a powerful compact woofer loaded by a passive radiator, for each channel.

ENGADGET: Philips showcases its 2013 Fidelio audio lineup at CES, we go eyes-on

Each onboard ADS-B set consists of a Global Positioning System satellite navigation unit, two Pentium microprocessors, some software and a radio transmitter-receiver--not much more gear than you would find behind the dash of a new Cadillac.

FORBES: Free flight

In July, Palm Inc. surprised no one when it announced a plan to split into two companies, with a spinoff of the operating-system software unit likely by early 2003.

FORBES: Handhelds across America