Change jumper JP5, JP6, JP7, JP8 set position, change modulating frequency to avoid disturbance of some close radio-frequency, corresponding receiver frequency should be accordance with its set.

• 改变跨接线JP5、JP6、JP7、JP8设置位置，改变调制频率以避开某些相近的无线电频率的干扰，其对应的接收机调制频率也必须与其设置为一致。