2013年1月4日星期五

2 Way Radio Vs. Scanner

Two-way Radios
Ranging from children’s walkie-talkies to portable phones, two-way radios cover a vast assortment of technologies and are used by fire departments, police stations, households, outdoor enthusiasts, airplanes, truckers and many others.
Two-way Radio Specifications
There are two forms of two-way radios: simplex and duplex. Simplex operates on one channel at a time, while duplex operates on two channels. When buying the duplex two-way radios, you’ll find two types: FRS and GMRS. GMRS is very similar to a CB and requires an FCC license to operate. FRS is similar to a traditional walkie-talkie.
2 way Radio Range
Two way radios generally have a 5 to 20 mile range, depending upon the quality of the equipment and the topography of the surrounding area.
Radio Scanners
Radio scanners are directly dependent upon two-way radio frequencies. When any two-way radio system is broadcast (assuming it is not scrambled), a person can use a radio scanner to pick it up.
Why People Use Radio Scanners
The hobbyist normally uses radio scanners for entertainment purposes. Scanners can pick up a variety of broadcasts, including the National Weather Service, CB radios, police radios, fire department radios and even airplane radios.
Radio Scanner Specifications
Radio scanners come in two types: base and handheld. Handheld scanners are easily transportable. Scanners come with a variety of functions, including variable frequency capabilities and various sensitivities to the distance of frequencies.

1 条评论:

  1. Thanks a lot for your nice posting. I think that it is very helpful to all. You can get more information here about Android Mobile Computer Handheld Scanner.

    回复删除