When detached from the PC, the small receiver unit, which has a rechargeable battery, stores whatever you write with the pen.

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The data is tracked passively and stored in a USB key that plugs into the receiver unit and detaches to be read on your home computer.

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The Broncos could get another wide receiver, or another offensive lineman, or even a young cornerback to bolster that unit.

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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

The device itself is a fairly standard affair, boasting a 4.3-inch WQVGA display, a 400MHz CPU, 64MB of RAM, an SD card slot, an FM transmitter, Bluetooth, and maps of the US and Canada pre-loaded on the unit's 2GB of internal flash memory -- an RDS-TMC traffic information receiver is also available as an optional accessory.

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