2013年1月4日星期五

UHF Radio Rules

Ultra high frequency (UHF) radios make use of the decimeter wavelength, which ranges from 10 cm to 1-meter. This wavelength range incorporates a range of electromagnetic waves with frequencies between 300 megahertz and 3,000 megahertz. The ultra high frequency range is normally used for 2 way radios, cordless telephones and cell phones. Frequencies above 2,400 megahertz are reserved for Bluetooth technology. The ultra-high frequency radio has stringent rules, additional security and more commercialization than the similar citizen band radio.
Licensing
It is not necessary to take a test that proves competency in using an ultra high frequency band, but a user is required to apply for a license to broadcast on most ultra high frequency channels. Users, who are broadcasting on the family radio service (FRS) channels eight through fourteen, can do so without applying for a license, provided they are using a Federal Communications Commission-certified unit. Users are required to conform to all rules of transmission and can loose their license, if they have one, should they fail to do so.
Etiquette Rules
An operator must follow certain rules of etiquette when using an ultra high frequency radio. The most basic rule is to simply listen more than you talk. These radios are not toys and each time you begin to speak, other users on your specific frequency, are not able to do so. For this reason, it is important to speak only if you really need to. Plan what you need to say before initiating any conversation. Wait until the channel is clear before attempting to speak. Speak clearly and as briefly as possible. Use language that the person you are speaking to can understand. Do not use profanity. Be cautious when sending a message, as you do not know who may be within hearing range of the person to whom you are speaking.
Do not begin your conversation immediately upon depressing the talk button, as your first word will probably be lost. For this reason, it is etiquette to first identify yourself, normally through a pre-designated code and to indicate the name or call sign of the person to whom you wish to speak. In emergency situations, if a person has not previously been designated as being in control, listen to the person who comes across as having the best knowledge of the current situation. It is not necessary to shout when speaking into the radio, even when talking in a noisy area.
International Telecommunication Union
Certain world-standard radio operating procedures are recommended by the International Telecommunication Union. The term “over” means that the person who is speaking, expects an answer, while the term “out” implies that the conversation is over and that no response is required. It is therefore unnecessary and incorrect to use the term “over and out” as the first part of this response totally contradicts the second part.

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