Leveraging a Time Division Multiple Access (TDMA) platform, MOTOTRBO reduces overall equipment costs while supporting more users and more information in the same area and frequency. The performance and flexibility of TDMA make it the only serious choice for professional two-way digital radio.
Increased spectral efficiency in existing 12.5kHz channels. TDMA enables 6.25 kHz equivalent efficiency in licensed 12.5 kHz repeater channels. This doubles per-channel capacity, while satisfying future regulatory requirements for 6.25 kHz equivalent efficiency. And unlike 6.25 kHz transmission methods built on Frequency-Division Multiple Access (FDMA) technology, TDMA fits seamlessly into existing licensed channel structures in UHF and VHF—increasing performance, eliminating the need for rebanding or re-licensing, and reducing the risk of new forms of radio channel interference.
Lower equipment costs. With TDMA, one repeater can do the work of two analog repeaters—lowering acquisition and operating costs. TDMA allows you to achieve 6.25 kHz equivalent efficiency while minimizing investments in repeaters and combining equipment. Unlike analog or FDMA technology that requires a dedicated repeater for each channel plus expensive combining equipment, two-slot TDMA achieves two-channel equivalency using single-channel equipment.
Advanced features and flexibility. At the repeater, the second slot in a TDMA technology platform can be used to deliver advanced features—such as IP-based dispatch data enhanced signaling—in parallel with a call on the other slot.
Increased battery life. TDMA delivers up to a 40 percent improvement in battery life compared with analog radios, because any given radio is transmitting only during every other slot. Effectively, this means the radio is only transmitting approximately half of the time.
Standards-based. TDMA is the globally-recognized European Telecommunications Standards Institute (ETSI) Digital Mobile Radio (DMR) tier two standard for professional mobile radio. TDMA also meets existing United States regulatory requirements for 12.5 kHz efficiency in both analog and digital mode.
