What is the best antenna length for FM radio? The working frequency of the radio station or walkie-talkie depends on the length of the walkie talkie antenna. We have proved through a series of theory and practice that when the length of the antenna is equal to one time wave or equal one-half wavelength, one quarter equal wavelength length, the effect on the Interphone antenna transmitting and receiving signals is the most effective. it is good. It can also be said that when the length of our commonly used walkie talkie mini antenna is between 36 and 37 cm or between 18 and 19 cm, the signal is the best. For civil public walkie-talkies, civil walkie-talkies are mainly common walkie-talkies in property, security and other occupations, long range walkie talkie antenna as long as the shortest is not less than 18 cm, a good communication effect can be guaranteed.