2012年3月25日星期日

2 Way Radios

Frequency Things to consider for Recreational Motor Electrical Collection 2 Way RadiosIf you are looking for 2 way radios for personal use, you possess an immediate and important choice to make: What rf band do you require?Frequency! 2 way radios obviously utilize 'wireless' communication methods so when using a 2 way radio you are transmitting and sending your message through the air -- exactly the same air that is currently carrying television signals, Wholesale Nail Art Market Information commercial radio signals, Ham radio signals and huge amounts of signals from other private 2 way radios. The government Communications Commission (FCC) has got the job of controlling all of these communication signals so they don't run into one another; to do this they've reserved frequency bands for use by certain types of communication (signal sending) devices. There's two frequency bands being used for recreational 2 way radios, these are called Family Radio Service (FRS) and General Mobile Radio Service (GMRS).In 1996, the FCC reserved some radio frequencies they called the Family Radio Service (FRS) band, especially for short-range 2 way radios (radios that operate a maximum of 2 miles away from one another) having a small power output (as much as 500 milliwatts or one-half watt).About half a century before the FCC created the FRS band they had reserved some frequencies for higher power 2 way radios that operated over a longer range this is the General Mobile Radio Service (GMRS) band. The GMRS band is for radios having a power output between one and five watts along with a range over 2 miles. The FCC regulates the 2 way radios that work on the GMRS band and 925 Silver Jewelry Show requires users of this kind of radio to obtain a license and pay a fee. The GMRS license is good for 5 years and costs $80.00; the license must be obtained by an adult (the radios operating underneath the license can be utilized by minors but only with the licensed adult's knowledge and permission). Navigate to the FCC's Internet page at: http://wireless.fcc.gov/services/index.htm?job=service_home&id=general_mobilefor more information on GMRS licensing.When purchasing 2 way radios, your choice is between a group of radios that operates only on one of those frequency bands or a set of radios that's able to work on either one of those frequency bands. This determination will obviously need to be made based on the maximum distance radio stations users will be from one another. When the radios are to be used within two miles of each other, FRS would be the best (and least expensive) choice. If your greater distance is consistently required, 2 way radios that operate on the GMRS frequency band will be required. If the requirement for distance is uncertain or if you want selecting occasionally transmitting up to five miles a FRS/GMRS hybrid is the radio set to choose.

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