If dad has issues (don’t they/we all) with his cellphone coverage, adding an extender/booster like the YX500-CEL may be the ticket to better calls and lower blood pressure. The zBoost takes an existing signal, even if slight, and both strengthens and expands it, often increasing the bars by 2-3 depending on environment. You will need to mount the booster somewhere high, like the attic, but with a little tweaking, the payoff is worth it. This model is designed for the 824 - 894 MHz range, which is Cingular, Verizon and Alltel cellular wireless phones. Other versions are available at similar prices.
