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天线的一般寿命为3年左右,其中固定式天线要比转向式的长一些,但从接收效果来看,转向式要优于固定式,天线振子结构选择很重要,建议大家选购振子简单、抗风性强的天线,振子复杂、引向器、反向器网很多的天线未必效果好。从安装效果来看,当放大电路相同,增益差不多的情况下,两者并没太大区别。相反,由于后者结构复杂,易招风。往往振子结构被风刮坏而无法使用。天线在组装完毕后,应在螺丝与振子连结的部位涂上防水漆或甘油。天线的放大电路都放在室外,如
The general life of the antenna is about 3 years, of which the fixed antenna is longer than the steering, but from the reception effect, the steering is better than fixed, the choice of antenna dipole structure is very important, we suggest that you buy a simple oscillator, Windy antenna, vibrator complex, director, inverter network, a lot of antennas may not be effective. From the installation results, the same amplification circuit, the gain is almost the case, the two are not much different. On the contrary, due to the complex structure, easy to move. Often the vibrator structure is damaged by the wind and can not be used. Antenna in the assembly is completed, the screw should be connected with the oscillator coated with paint or glycerol. Antenna amplification circuits are placed outdoors, such as