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What is a public radio?

Public walkie-talkie refers to a wireless walkie-talkie with a transmission power of not more than 0.5W and working at a specified frequency. Its radio transmission frequency, power and other radio frequency technical indicators must meet the following requirements:

1. Operating frequency (.9000;409. Unit: MHz): 409.7500, 409.7625, 409.7750, 409.7875, 409.8000, 409.8125, 409.8250, 409.8375, 409.8500, 409.8625, 409.8750, 409.8875, 4099125, 409.9250, 409.9375, 409.9500, 409.9625, 409.9750, 409.9875;

2. Modulation mode: F3E;

Effective Transmit Power (EIRP):< 0.5W;

4. Emission frequency tolerance:< 5ppm;

5. Stray radiation of transmitter:<50uW;

6. Receiver spurious radiation:<20nW;

7. Channel spacing: 12.50kHz.

Interphone electromagnetic interference, electromagnetic compatibility

In order to avoid problems caused by electromagnetic interference and/or electromagnetic compatibility, the walkie-talkie should be turned off when the sign "turn off the walkie-talkie" is affixed. For example, hospitals or other occasions where health care medical equipment is used. When flying, the intercom should also be turned off as required.

Zhejiang Kaichi Electronic Technology Co., Ltd.

Through continuous accumulation, continuous innovation, and gradually improve their own product chain, the company developed emergency communications software systems have entered the government and military customer market, and access to customer recognition and support.

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