Current location - Education and Training Encyclopedia - Education and training - 222- 1 What antenna does the receiver use?
222- 1 What antenna does the receiver use?
Spiral antenna. According to Alibaba 1688 website, the 222 1 shortwave receiver uses a 7-meter spiral antenna. Helical antenna is a kind of twisted antenna, which is usually used in microwave and satellite communication. The invention of spiral antenna can be traced back to the research of American engineer Hal Philip Flanagan during World War II.
Related articles
  • How about the supporting facilities around Shouqiu Street Community in Zhenjiang?
  • Is there a Silicon Valley Training School in Shouguang City?
  • Packaging training
  • What are the majors of Xiangyang Tourism School?
  • Is Spark Plan Education Consulting Dalian Co., Ltd. a liar?
  • New Oriental College has a thousand words.
  • Which high-speed railway station is near Beijing Shijingshan Sublimation Training School?
  • Curriculum schedule of performance department

    First, the central academy of drama performance department curriculum

    The courses offered by the performance major (music performance) of the

  • Is it true that Minsheng Bank evaluates gold medal internal trainers?
  • Japanese Song Feng Training

    • copyright 2024 Education and Training Encyclopedia All rights reserved