Glossary of VHF Marine Radio Terminology By Joe Minick Bluetooth— A wireless technology that allows communication between Bluetooth-compatible devices. Used for short-range communications, all Bluetooth devices operate on 2.4GHz and range is limited to about 30 feet . Coaxial Cable— A type of wire that consists of a center wire surrounded by insulation and covered with a grounded shield of braided wire. The shield minimizes electrical and radio frequency interference. Decibel —Abbreviated as dB, db and DB, the decibel is a logarithmic expression of the ratio between two signal power levels. A decibel is 1/10 of a Bel, a rarely used uni...

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