对讲机是电法勘探中必不可少的通话设备。目前普遍都是使用普通的电话耳机进行通话联系，由于声音小，工作人员需要经常守在耳机旁边；在高压线、电话线、广播线附近工作时，交流蜂声干扰严重，影响正常通话；由于通话，经常引起MN电极极化，使得电法勘探不能顺利进行。 Walkie-talkie is essential for electrical prospecting equipment. At present, ordinary telephone headsets are generally used to make phone calls. Because of the small sound, staffs often need to keep their headsets nearby. When working near high-voltage lines, telephone lines and broadcast lines, the AC buzzer interferes seriously and affects normal calls. As a result of the call , Often cause MN electrode polarization, making the electrical exploration can not be carried out smoothly.