Two-way radios are essential tools in communication, whether for marine navigation, emergency services, or casual use. However, the world of radios comes with a slew of abbreviations that might confuse newcomers. Whether used for public safeties, emergency services, or recreational use, two-way radios are an essential communication tool. However, there are many abbreviations in the radio world that might confuse radio beginners. So here are some basic abbreviations might help you.
UHF (Ultra High Frequency): UHF refers to radio frequencies in the range of 300 MHz to 3 GHz. Ideal for indoor use and dense urban environments due to its ability to penetrate walls and buildings. UHF radios are commonly used in security operations, warehouses, and short-range communication.
VHF (Very High Frequency): VHF operates in the 30 MHz to 300 MHz frequency range. VHF is best suited for open spaces and outdoor environments, such as marine communication and aviation. For example, VHF radios are a staple for maritime and aviation industries, where long-range line-of-sight communication is required.
VOX: Voice-operated exchange, or VOX, enables hands-free operation. It activates the microphone when you speak and turns it off when you stop, making it perfect for multitasking.
GMDSS： Global Maritime Distress and Safety System，a global communication protocol used by ships and coastal stations for distress and safety purposes.
HAM (Amateur Radio): Ham radio refers to amateur radio frequencies used for personal and non-commercial communication which is deal for hobbyists, emergency communication, and disaster response. For example: A ham radio allows operators to connect over long distances, even across continents.
CB (Citizen’s Band): CB radio operates in the 27 MHz range and does not require a license for use which is popular among truckers, outdoor enthusiasts, and hobbyists for short-range communication.
PTT (Push-To-Talk): A feature that allows users to transmit their voice by pressing a button. Standard in all two-way radios, including UHF radios, VHF radios, and marine radios.
NOAA: National Oceanic and Atmospheric Administration, a system that broadcasts weather updates and alerts via radio. NOAA is available on most marine radios, ensuring safety for boaters and seafarers.
TETRA: Terrestrial Trunked Radio is a two-way digital mobile radio standard developed by ETSI ( European Telecommunications Standards Institute). The purpose of the TETRA standard is to meet the needs of various entities such as public safety, transportation, government & military bodies.
Squelch: A setting that reduces background noise when no signal is being received which can improve the clarity of communication, especially in noisy environments.
DCS (Digital Coded Squelch): A digital squelch feature that eliminates interference by allowing communication only between radios using the same code.
LTE: LTE (Long-Term Evolution) is a fourth-generation (4G) wireless standard that provides increased network capacity and speed for cell phones and other cellular devices over third-generation (3G) technology.
ARRL: American Radio Relay League, the national association for ham radio operators in the United States.
ATU: Antenna Tuning Unit , a device installed between a receiver or transmitter and the antenna to match the radio impedance to the antenna impedance for maximum power transfer.
IP: IP is an abbreviation for Ingress Protection. It is a waterproof certification used by electronic device manufacturers that determines the resistance to dust and water. Two numbers follow these letters and describe, in order, the level of protection against dust (maximum 6) and the other against water (maximum 9).
