shortwave frequency

简明释义

短波频率

英英释义

例句

1.Many travelers rely on shortwave frequency 短波频率 radios to get news from their home countries.

许多旅行者依靠短波频率 短波频率收音机获取来自自己国家的新闻。

2.During the storm, we tuned into a shortwave frequency 短波频率 to receive emergency updates.

在暴风雨期间，我们调到一个短波频率 短波频率以接收紧急更新。

3.The radio station broadcasts on a shortwave frequency 短波频率 that can be received worldwide.

这家广播电台使用一种可以全球接收的短波频率 短波频率进行广播。

4.The shortwave frequency 短波频率 allows communication over long distances without the need for satellites.

这种短波频率 短波频率允许在长距离内进行通信，而无需卫星。

5.Ham radio operators often use shortwave frequency 短波频率 to connect with other enthusiasts around the world.

业余无线电操作员通常使用短波频率 短波频率与世界各地的其他爱好者联系。

作文

In the realm of radio communications, the term shortwave frequency refers to a specific range of radio frequencies that typically spans from 3 to 30 MHz. This range is characterized by its ability to propagate over long distances, making it particularly useful for international broadcasting and communication. The shortwave frequency bands are utilized by various organizations, including government agencies, amateur radio operators, and commercial broadcasters, to reach audiences across vast geographical areas.One of the most notable features of shortwave frequency is its capacity to reflect off the ionosphere, which allows signals to travel beyond the horizon. This phenomenon is especially beneficial for transmitting information to remote locations where traditional communication infrastructure may be lacking. For instance, during times of political unrest or natural disasters, shortwave frequency broadcasts can provide critical news and updates to affected populations.Moreover, the shortwave frequency spectrum is not only limited to voice transmissions; it also encompasses data transmission, including digital modes such as FT8 and PSK31. These modes enable amateur radio operators to communicate effectively even under poor signal conditions, showcasing the versatility of shortwave frequency technology.The use of shortwave frequency is not without its challenges, however. The variability in atmospheric conditions can lead to fluctuations in signal strength and quality, which may affect the reliability of communications. Additionally, interference from other electronic devices and competing signals can complicate reception. As a result, operators often employ various techniques to enhance their signal clarity, such as using directional antennas and optimizing their transmission power.In recent years, the advent of the internet and satellite communications has raised questions about the future of shortwave frequency broadcasting. While these technologies offer higher fidelity and more reliable connections, shortwave frequency remains relevant, particularly in regions with limited access to modern communication infrastructure. Furthermore, many listeners appreciate the unique experience of tuning into a shortwave frequency broadcast, which often includes cultural programming and music that reflects the diversity of global communities.In conclusion, the significance of shortwave frequency in the field of communication cannot be overstated. It serves as a vital link for individuals and communities around the world, providing access to information and fostering connections across borders. As technology continues to evolve, the enduring appeal of shortwave frequency will likely persist, ensuring that it remains an essential tool for communication in our increasingly interconnected world.

在无线电通信领域，术语短波频率指的是一个特定的无线电频率范围，通常从3到30 MHz。这个范围的特点是能够在长距离传播，使其特别适合国际广播和通信。短波频率频段被各种组织使用，包括政府机构、业余无线电操作员和商业广播公司，以便覆盖广阔的地理区域。短波频率最显著的特征之一是其能够反射到电离层，这使得信号能够越过地平线传播。这种现象对于向偏远地点传输信息尤其有利，在这些地方，传统的通信基础设施可能缺乏。例如，在政治动荡或自然灾害期间，短波频率广播可以向受影响的人群提供重要的新闻和更新。此外，短波频率频谱不仅限于语音传输；它还包括数据传输，包括诸如FT8和PSK31等数字模式。这些模式使业余无线电操作员即使在信号条件较差时也能有效沟通，展示了短波频率技术的多样性。然而，短波频率的使用并非没有挑战。大气条件的变化可能导致信号强度和质量的波动，这可能影响通信的可靠性。此外，其他电子设备和竞争信号的干扰可能会使接收变得复杂。因此，操作员通常采用各种技术来增强信号清晰度，例如使用定向天线和优化传输功率。近年来，互联网和卫星通信的出现引发了关于短波频率广播未来的讨论。虽然这些技术提供了更高的保真度和更可靠的连接，但短波频率仍然具有相关性，特别是在现代通信基础设施有限的地区。此外，许多听众欣赏调谐到短波频率广播的独特体验，这通常包括反映全球社区多样性的文化节目和音乐。总之，短波频率在通信领域的重要性不容小觑。它为世界各地的个人和社区提供了重要的联系，提供了获取信息的途径，并促进了跨国界的联系。随着技术的不断发展，短波频率的持久吸引力可能会持续，确保它在我们日益互联的世界中仍然是一种重要的通信工具。