Hytera DMR System Planner
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1.3 Hytera DMR Technology Highlights
Hytera DMR technology has many advantages compared with analog technology,
especially in aspects such as spectrum resource, capacity, coverage and
encryption.
The DMR technology divides one channel into two alternative slots, and thus allows
twice the channels based on the same spectrum resource. This is a big help to
relieve the stress of increasing shortage in spectrum resource. The 2-slot
technology doubles the repeater functions, which greatly reduces the cost and
minimizes the configuration complexity. Furthermore, its compatibility with analog
mode makes the transition cost-effective and smooth. The radio transmits on the
two slots alternatively, which can reduce the transmission time length and thus
ensure a longer endurance.
With Hytera DMR radios, it becomes possible to use two slots simultaneously. For
example, you can receive audio and data simultaneously on both slots, or transmit
audio on one slot while receive signaling to realize special functions, such as Priority
Interrupt, on the other slot. The audio transmission will not be affected by data
reception. In this way, users can experience a more efficient and swift
communication.
With DMR technology, the communication has a larger coverage and better
reliability. Analog signal is transmitted in sine waveform which may be subject to
more interference; while digital signal is transmitted in rectangular waveform that
can be optimized easily. In addition, digital signals can be transmitted very far by
either repeater or IP network. However, analog signal cannot be sent through IP
network.
During analog transmission, the signal can be received once the frequency is known,
and it can be decrypted easily even scrambler is applied. This is far from enough for
users who require reliable security. However, the digital signal can be encrypted
through special mechanisms, in which keys are applied to make the signal
inaccessible to anyone except those possessing the same key, so as to achieve
communication privacy.
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