47 CFR 90.541 - Transmitting power and antenna height limits.
The transmitting power and antenna height of base, mobile, portable and control stations operating in the 769-775 MHz and 799-805 MHz frequency bands must not exceed the maximum limits in this section. Power limits are listed in effective radiated power (ERP).
(c) The transmitting power of a mobile unit must not exceed 100 watts ERP.
(d) The transmitting power of a portable (hand-held) unit must not exceed 3 watts ERP.