Do I need an antenna for AM or FM?

The frequency of the most commonly used civil walkie talkie antenna is 409-410MHz, and the optimal length of the walkie talkie antenna is between 36-37 cm or 18-19 cm. The signal is the best. Because Interphone antenna The signal received by the walkie-talkie antenna is the strongest only within the most suitable range. Why does the antenna need to be the right length? Because the range of the antenna length is related to the frequency and wavelength of the walkie-talkie. The frequency and wavelength of the walkie talkie determine the length of the walkie talkie mini antenna. For example, the working frequency of our civil walkie talkie is between 409 and 410MHz. Since the propagation speed of radio is approximately equal to the speed of light, the wavelength is simply the speed of light divided by the operating frequency. That is to say, the wavelength of the civil public walkie-talkie is about 0.73 meters. The signal is best when the optimum length of the pair long range walkie talkie antenna is between 36 and 37 cm or between 18 and 19 cm.