Ultra high frequency (UHF) designates a
range (band)
of
electromagnetic
waves with
frequencies
between 300
MHz and 3
GHz
(3,000 MHz). Also known as the decimeter band or decimeter wave as
the wavelengths range from ten to one
decimeters.
Mobile radio or mobiles refer to wireless communications systems and
devices which are based on radio frequencies, and where the path of
communications is movable on either end. There are a variety of views about what
constitutes mobile equipment. For US licensing purposes, mobiles may include
hand-carried, (sometimes called portable), equipment.
A sales person or radio repair shop would understand the word mobile
to mean vehicle-mounted: a transmitter-receiver (transceiver)
used for radio communications from a vehicle. Mobile radios are mounted
to a motor vehicle usually with the microphone and control panel in
reach of the driver. In the US, such a device is typically powered by
the host vehicle's 12 volt electrical system.
900 MHz Mobile Radios are designed to be installed in fixed locations.
