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In wireless communication, band refers to a specific range of radio frequencies.

Bands are numbered. For example, band 2 spans radio frequencies from 1850 MHz to 1995 MHz. Before the advent of 4G networks, this same band was known as the "1900" or "PCS" band.

See: MHz

Currently, mobile networks in the U.S. use bands 2, 4, 5, 12, 13, 25, 26, 29, 30, 41, 66, and 71.

Lower frequencies travel farther and penetrate solids better than higher frequencies. The lowest-frequency band in the U.S. is band 71, which starts at 617 MHz. The highest-frequency band is band 41, which tops out at 2,690 MHz.

See: Band 71

See: Band 41

Most bands for mobile networks are paired, meaning they are split into two halves: half for phones to transmit signals, and half for phones to receive signals.

See: Paired Band

Most bands for mobile networks are also sub-divided into smaller units called blocks.

See: Block

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