A portable two-way radio is a (hand-held)
radio that can both transmit and receive (a transceiver),
unlike a broadcast receiver which only receives content. A push-to-talk
or "Press To Transmit" (PTT) button is often present to activate the
transmitter. Additionally, Hand-held radios are often called walkie-talkies or
handie-talkies. Portable Two Way Radio also fit in your hand.
Portable
two-way Radios are differentiated from Mobile Radios in that they have a battery (power source),
and antenna system built in to the casing of the radio.
Portable Two-Way Radios are available from 35 MHz - 1200 MHz radio frequencies.