Trimble introduced the GeoRadio 2.4 GHz, which allows for license-free use in most areas worldwide by using the 2.4 GHz Industrial, Scientific and Medical (ISM) devices band. Rather than using a fixed channel, the radio's spread spectrum technology enables signals to "hop' over a wide range of frequencies. The sending and receiving radios change frequencies in unison, creating reliable communications over a spread of frequencies and reducing the vulnerability to interference, jamming and multipath fading. The Trimble GeoRadio 2.4 GHz uses the frequency range 2401 to 2470 MHz. The 100mW GeoRadio 2.4 GHz system also provides a long-range radio link that reaches up to 1,200 m (3,937 ft). The GeoRadio 2.4 GHz is fully compatible with the Trimble 5600 Total Station Series and the Geodimeter 600 series and will be offered as an upgrade for existing users. (Trimble, Sunnyvale, Calif.)
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