Dual band

The term dual band describes the ability of devices to cover two different frequency ranges.

Mobile phones

Mobile phones that can establish connections on both frequency ranges used in Europe are known as dual-band devices.

In Europe , the use network operators two GSM - frequency bands ranging from 900 MHz and in the range of 1800 MHz. In order for a mobile phone to be able to use both areas, it must be set up for radio communication on both frequency bands (so-called "dual-band capability"). Almost all current cell phones are dual band devices.

Tri - band and quad-band cell phones also master the frequency bands used on the American continent.

Situation in Germany

The original D network used the frequency range in the 900 MHz range and the E network that in the 1800 MHz range. The two D-Netz providers are now also using frequencies in the 1800 MHz range to increase network capacity in metropolitan areas. Conversely, the former E-Netz operators are now also using D-Netz frequencies. These are particularly advantageous in less populated areas because they have a greater range.

Situation in Switzerland

As of 2005, Swisscom and Sunrise used both frequency ranges, Orange (today: Salt ) and Tele2 the 1800 MHz range. As of 2011, Swisscom was using the 900 MHz range, while Sunrise and Orange used the 1800 MHz range.

Amateur radio

In amateur radio , radios with the VHF / UHF ranges ( 2 m / 70 cm ) are referred to as dual-band devices, dual-band devices, or dual or dual-band devices. These devices represent the majority of radio devices used in vehicles. Radio devices are referred to as tribander devices that also cover a further frequency range, such as B. the 6-meter tape or the 10-meter tape .

Other uses

The term is also used for WLAN devices.