409 MHz public address radio frequency. Must be less than 0.5 watts, non-removable antenna, and fixed at 20 frequencies.
Although the ham radio has a function for transmitting on 409 MHz, according to regulations, ham radios in the UV band can only transmit at frequencies of 144-148 MHz and 430-440 MHz. Transmitting on other UV band frequencies is illegal.
You can only communicate with me if you have both a ham radio and a public two-way radio. However, with only 0.5 watts of power and that poor antenna, a communication distance of 200 meters – is it really necessary to "communicate"?😄
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