medium frequency transmitter

简明释义

中频发射机

英英释义

例句

1.The medium frequency transmitter allows for clearer sound quality over longer distances compared to high frequency transmitters.

中频发射器与高频发射器相比，允许在更长距离内提供更清晰的音质。

2.The local radio station uses a medium frequency transmitter to broadcast news and music to the community.

当地的广播电台使用中频发射器向社区广播新闻和音乐。

3.During the emergency drill, the medium frequency transmitter was tested for its reliability in communication.

在应急演习中，测试了中频发射器在通信中的可靠性。

4.The medium frequency transmitter is essential for maritime communication, especially for ships at sea.

中频发射器对于海上通信至关重要，尤其是对于在海上的船只。

5.Engineers are working on upgrading the medium frequency transmitter to improve its range and efficiency.

工程师们正在努力升级中频发射器以提高其范围和效率。

作文

In the realm of telecommunications, the evolution of signal transmission has played a pivotal role in connecting people across vast distances. One significant component of this technology is the medium frequency transmitter, which operates within the medium frequency (MF) band of the electromagnetic spectrum, typically ranging from 300 kHz to 3 MHz. This frequency range is particularly effective for broadcasting over long distances, especially during nighttime when atmospheric conditions favor the propagation of these signals. The medium frequency transmitter is primarily used for AM (Amplitude Modulation) radio broadcasting. AM radio stations utilize this technology to transmit audio content, such as music, news, and talk shows, to a wide audience. The ability of medium frequency transmitters to cover large geographical areas makes them an essential tool for reaching rural and remote audiences who may not have access to other forms of media. One of the key advantages of using a medium frequency transmitter is its ability to penetrate urban environments. Buildings and other structures can obstruct higher frequency signals, making it challenging for FM (Frequency Modulation) or digital signals to reach listeners effectively. In contrast, the longer wavelengths associated with medium frequency signals can diffract around obstacles, ensuring a more reliable reception in densely populated areas. Moreover, medium frequency transmitters are also utilized in maritime and aviation communication. Ships at sea and aircraft in flight rely on MF transmissions for navigation and safety communications. These transmitters provide critical information about weather conditions, navigational aids, and emergency alerts, thereby enhancing the safety of operations in these sectors. However, the use of medium frequency transmitters is not without challenges. The quality of the audio signal can be affected by various factors, including interference from electrical devices, atmospheric noise, and the presence of competing signals. Additionally, as technology advances, there has been a noticeable shift towards digital broadcasting, which offers improved sound quality and more efficient use of the frequency spectrum. This transition poses a potential threat to traditional AM broadcasting, as fewer listeners turn to medium frequency transmitters in favor of digital platforms. Despite these challenges, the medium frequency transmitter remains a vital part of the broadcasting landscape. It continues to serve as a lifeline for communities that rely on radio as their primary source of information and entertainment. Furthermore, the resilience of medium frequency transmitters during emergencies, such as natural disasters, highlights their importance in public safety communications. In conclusion, the medium frequency transmitter plays a crucial role in the field of telecommunications, enabling widespread access to information and fostering connections among individuals. While the landscape of broadcasting is evolving, the significance of medium frequency transmitters cannot be understated. They remain an essential tool for communication, bridging gaps and providing a voice to those in need, reinforcing the notion that even in a digital age, traditional technologies still hold a place of value.

在电信领域，信号传输的演变在连接遥远距离的人们方面发挥了重要作用。这个技术的重要组成部分是中频发射器，它在电磁波谱中的中频（MF）波段内工作，通常范围从300 kHz到3 MHz。这个频率范围在广播长距离信号方面特别有效，尤其是在夜间，当大气条件有利于这些信号的传播时。
中频发射器主要用于AM（幅度调制）广播。AM广播电台利用这项技术将音频内容传输给广泛的受众，如音乐、新闻和谈话节目。中频发射器覆盖大地理区域的能力使其成为接触可能没有其他媒体接入的农村和偏远受众的必要工具。
使用中频发射器的一个关键优势是它能够穿透城市环境。建筑物和其他结构可能会阻挡高频信号，使FM（频率调制）或数字信号有效到达听众变得具有挑战性。相比之下，与中频信号相关的较长波长可以绕过障碍物，从而确保在密集人口地区更可靠的接收。
此外，中频发射器还被用于海事和航空通信。海上的船只和飞行中的飞机依赖MF传输进行导航和安全通信。这些发射器提供关于天气条件、导航辅助设备和紧急警报的关键信息，从而增强了这些行业操作的安全性。
然而，使用中频发射器并非没有挑战。音频信号的质量可能会受到各种因素的影响，包括电气设备的干扰、大气噪声以及竞争信号的存在。此外，随着技术的进步，已经出现了明显向数字广播的转变，这种广播提供了更好的音质和更有效的频谱使用。这一转变对传统AM广播构成潜在威胁，因为越来越少的听众选择中频发射器，而倾向于数字平台。
尽管面临这些挑战，中频发射器仍然是广播领域的重要组成部分。它继续作为社区的生命线，这些社区依赖于广播作为其主要的信息和娱乐来源。此外，中频发射器在自然灾害等紧急情况下的韧性突显了它们在公共安全通信中的重要性。
总之，中频发射器在电信领域发挥着至关重要的作用，使信息的广泛获取成为可能，并促进个人之间的联系。尽管广播的格局正在演变，但中频发射器的重要性不可低估。它们仍然是沟通的重要工具，弥合差距，为需要的人提供声音，强化了即使在数字时代，传统技术仍然具有价值的观念。