User's Manual

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Advantages of the Digital Wireless System 2/2

» Reuse of the Same Channel

» Improved Security

Another advantage of the digital wireless system is that simultaneous use of multiple microphones on the

same frequency in the same area can be realized more easily because of its immunity to radio interference

and noise.

In the case of analog systems, the distance between microphones should be at least 100 meters when using

the same frequency channel in the same area to ensure 40 dB of D/U ratio. However, in the case of digital

systems, the distance can be reduced to 30 - 40 m*, making it easier to cope with even a building (area) with

multiple rooms that require multiple microphones.

*This can change depending on antenna mounting conditions or room conditions, such as the thickness or material of walls.

Conventional analog wireless systems transmit their audio signals through FM modulation. With this

method, it is possible that communications could be intercepted by general broadband receivers (FM radio,

etc.), causing much anxiety in terms of security. On the other hand, with digital systems, since the audio is

transmitted through digital modulation, only noise can be heard if received by a broadband receiver. This can

prevent exposure of information, leading to improvements in the security of information communication.

Area

Room

Area and Room