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Licensed, professional two-way radio is on the verge of making the biggest leap forward since the invention of the transistor - the move from analog to digital. Digital radio offers many advantages over analog, including improved voice quality at greater range, better privacy, sophisticated call-control features, the ability to easily integrate with data systems, and more. This white paper examines the two leading digital modulation technologies that are capable of achieving this doubling of spectral efficiency: 6.25 kHz FDMA and two-slot 12.5 kHz TDMA. Businesses looking to migrate to the most efficient professional digital systems to achieve greater capacity and performance will need to choose one or the other - FDMA and TDMA are not interoperable.
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