Questenaتمرینی که نشان می‌دهد بعد چه چیزی را مرور کنید
سؤال 23

What is the maximum bandwidth for a data emission on 60 meters?

  1. 60 Hz
  2. 170 Hz
  3. 1.5 kHz
  4. 2.8 kHzپاسخ درست

توضیح

All 60-meter operation is held to 2.8 kHz of occupied bandwidth, and that one figure covers data as well as phone and RTTY. The narrower values describe typical CW or narrow-shift RTTY signals, not the regulatory ceiling.

ادامهٔ این آزمون

شروع تمرین
سؤال 23: What is the maximum bandwidth for a data emission on 60… · FCC Amateur Extra Class (Element 4) · Questena