bg2kud As shown in the figure. The calculation of the oscillator length is either 1 to 2 to 3, or 2 to 3.
BH7HQT 分情况讨论： 如果1-2-3是整根导线，那么1-2-3点间的所有导体均为振子。 如果1-2是馈线，在2点挂巴伦，2-3为振子（通常的端馈接法） · 2、3点与杆、地面绝缘，则2-3之间的导体部分为振子。 · 如果2、3点之间与杆、地面间不绝缘，振子长度可能还要包括杆体。
bg2kud I'm planning to build a 20-meter long antenna and use an antenna tuner to adjust the SWR. I also want to secure the vibrator to the tree using insulating blocks.
BH7HQT bg2kud It is recommended to connect the third point to the insulator, then attach a short rope and hang it on the tree to prevent accidental grounding.
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