Walkie talkie as personal Two way radio has become popular also because Family Radio Service (FRS) and similar unlicensed services (such as in Australia's UHF CB and Europe's PMR446) in other countries. While FRS walkie-talkies are also sometimes used as toys because mass-production makes them low cost, they have proper superheterodyne receivers and are a useful communication tool for both business 
and personal use. The boom in unlicensed transceivers has however been a source of frustration to users of licensed services that are sometimes interfered with (for example, FRS and GMRS overlap in the United States, resulting in substantial pirate use of the GMRS frequencies and requiring Canada to reallocate frequencies for unlicensed use due to heavy interference from US GMRS users, while the European PMR446 channels fall in the middle of a the US UHF amateur allocation and the US FRS channels interfere with public safety communications in the United Kingdom). Designs for personal walkie-talkies are in any case tightly regulated, generally requiring non-removable antennas (with a few exceptions such as CB radio and the United States MURS allocation) and forbidding modified radios.Most personal walkie-talkies sold are designed to operate in UHF allocations, and are designed to be very compact, with buttons for changing channels and other settings on the face of the radio and a short, fixed antenna. Most such units are made of heavy, often brightly colored plastic, though some more expensive units have ruggedized metal or plastic cases. Commercial-grade radios are often designed to be used on allocations such as GMRS or MURS (the latter of which has had very little readily available purpose-built equipment).
and personal use. The boom in unlicensed transceivers has however been a source of frustration to users of licensed services that are sometimes interfered with (for example, FRS and GMRS overlap in the United States, resulting in substantial pirate use of the GMRS frequencies and requiring Canada to reallocate frequencies for unlicensed use due to heavy interference from US GMRS users, while the European PMR446 channels fall in the middle of a the US UHF amateur allocation and the US FRS channels interfere with public safety communications in the United Kingdom). Designs for personal walkie-talkies are in any case tightly regulated, generally requiring non-removable antennas (with a few exceptions such as CB radio and the United States MURS allocation) and forbidding modified radios.Most personal walkie-talkies sold are designed to operate in UHF allocations, and are designed to be very compact, with buttons for changing channels and other settings on the face of the radio and a short, fixed antenna. Most such units are made of heavy, often brightly colored plastic, though some more expensive units have ruggedized metal or plastic cases. Commercial-grade radios are often designed to be used on allocations such as GMRS or MURS (the latter of which has had very little readily available purpose-built equipment). In addition, CB walkie-talkies are available, but less popular due to the propagation characteristics of the 27MHz band and the general bulkiness of the gear involved.While not frequency-agile in the same manner as amateur radio HTs, personal walkie-talkies are generally designed to give easy access to all available channels (and, if supplied, squelch codes) within the device's specified allocation.Personal two-way radios are also sometimes combined with other electronic devices; Garmin's Rino series combine a GPS receiver in the same package as an FRS/GMRS walkie-talkie (allowing Rino users to transmit digital location data to each other), while DingoTel allows the interfacing of FRS gear to a VoIP connection. Some personal radios also include receivers for AM and FM broadcast radio and, where applicable, NOAA Weather Radio and similar systems broadcasting on the same frequencies.
While jobsite and government radios are often rated in power output, consumer radios are frequently and controversially rated in mile or kilometer ratings; because of the line of sight propagation of UHF signals, however, experienced users consider such ratings to be wildly exaggerated, and some manufacturers have begun printing range ratings on the package based on terrain as opposed to simple power output. Find two way radios 30 miles, digital Trunked Mobile, BellSouth 2 way radio support multi band two way radio.
While jobsite and government radios are often rated in power output, consumer radios are frequently and controversially rated in mile or kilometer ratings; because of the line of sight propagation of UHF signals, however, experienced users consider such ratings to be wildly exaggerated, and some manufacturers have begun printing range ratings on the package based on terrain as opposed to simple power output. Find two way radios 30 miles, digital Trunked Mobile, BellSouth 2 way radio support multi band two way radio.