Questenaتمرینی که نشان می‌دهد بعد چه چیزی را مرور کنید
سؤال 369

Where should the radial wires of a ground-mounted vertical antenna system be placed?

  1. As high as possible above the ground
  2. Parallel to the antenna element
  3. On the surface or buried a few inches below the groundپاسخ درست
  4. At the center of the antenna

توضیح

The radials of a ground-mounted vertical carry the return current and screen it from lossy soil, and they can only do that if they are in intimate contact with the earth, so they go on the surface or a few inches down.

ادامهٔ این آزمون

شروع تمرین
سؤال 369: Where should the radial wires of a ground-mounted vertical… · FCC General Class (Element 3) · Questena