Cell phone users are all too accustomed to dropped calls and dead zones. One way to alleviate those problems is to boost the phone's signal with an external antenna. One such device is the Spotwave Z1900, which is geared for homes and small offices of up to 2,500 square feet. The indoor, wireless system works with cell phones, PDAs and 3G laptop cards.
The Wi-Ex zBoost works in the 800MHz and 1900MHz bands, both at home and in the car. According to a New York Times story, it's legal for consumers to purchase and own the cellular boosters, but Federal Communications Commission regulations are unclear about whether they're legal to use. Wireless companies, the Times reports, say the use of unauthorized repeaters can cause interference.
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