low VHF transmitter receiver

简明释义

低甚高频收发报机

英英释义

例句

1.For marine navigation, a low VHF transmitter receiver is essential for staying in touch with the coast guard.

在海洋导航中，低VHF发射接收器对于与海岸警卫队保持联系至关重要。

2.The team used a low VHF transmitter receiver to communicate over long distances during the hiking expedition.

团队在徒步旅行中使用了一个低VHF发射接收器进行远距离通信。

3.The local radio station uses a low VHF transmitter receiver to broadcast signals across the region.

当地广播电台使用一个低VHF发射接收器在整个地区广播信号。

4.The low VHF transmitter receiver allows pilots to communicate with air traffic control in remote areas.

该低VHF发射接收器使飞行员能够在偏远地区与空中交通管制进行通信。

5.During the emergency drill, we relied on a low VHF transmitter receiver to coordinate our efforts.

在应急演练中，我们依靠一个低VHF发射接收器来协调我们的工作。

作文

In the world of telecommunications, the importance of various types of transmitters and receivers cannot be overstated. Among these, the low VHF transmitter receiver plays a crucial role in ensuring effective communication over medium distances. VHF stands for Very High Frequency, which is a range of radio frequencies typically between 30 MHz and 300 MHz. The 'low' designation refers to the lower end of this frequency range, specifically from 30 MHz to about 90 MHz. This range is particularly useful for applications like television broadcasting, two-way radios, and marine communications.The functionality of a low VHF transmitter receiver is quite fascinating. It consists of two main components: the transmitter, which sends out signals, and the receiver, which captures those signals. The transmitter modulates information into radio waves, which are then broadcasted through the air. On the other hand, the receiver picks up these waves and demodulates them back into usable information. This process allows for seamless communication, whether it be voice, data, or video.One of the significant advantages of using a low VHF transmitter receiver system is its ability to penetrate obstacles such as buildings and trees. Unlike higher frequency systems, which may struggle with interference and signal degradation due to physical barriers, low VHF signals can travel longer distances and maintain clarity. This characteristic makes them ideal for rural areas where communication infrastructure may be limited.Moreover, the low VHF transmitter receiver is often employed in emergency services and public safety communications. Police, fire departments, and medical responders utilize these systems to coordinate their efforts during emergencies. The reliability and range of low VHF frequencies ensure that critical messages can be transmitted even in challenging environments, thus saving lives and improving response times.However, it is essential to understand that using a low VHF transmitter receiver is not without its challenges. For instance, the available bandwidth in the low VHF range is limited compared to higher frequencies. This limitation can lead to congestion, especially in urban areas where many users share the same frequencies. Additionally, while low VHF signals are excellent for long-range communication, they may not support the high data rates required for modern applications like streaming video or high-speed internet.In conclusion, the low VHF transmitter receiver is an indispensable tool in the field of telecommunications. Its unique characteristics make it suitable for various applications, particularly in scenarios requiring reliable long-distance communication. As technology continues to advance, the role of these systems will likely evolve, adapting to new demands and challenges. Understanding how they work and their significance in our daily lives is crucial for anyone interested in the field of communications. Whether for personal use or professional applications, the low VHF transmitter receiver remains a fundamental component of effective communication networks.

在电信领域，各种类型的发射器和接收器的重要性不容小觑。在这些设备中，低VHF发射接收器在确保中距离有效通信方面发挥着至关重要的作用。VHF代表超高频，通常是指30 MHz到300 MHz之间的无线电频率范围。“低”这一名称指的是该频率范围的低端，具体为30 MHz到大约90 MHz。这个频率范围特别适用于电视广播、对讲机和海洋通信等应用。低VHF发射接收器的功能非常引人入胜。它由两个主要组件组成：发射器负责发送信号，而接收器则捕获这些信号。发射器将信息调制成无线电波，然后通过空气广播出去。另一方面，接收器拾取这些波并将其解调回可用的信息。这一过程使得无论是语音、数据还是视频，都能够实现无缝通信。使用低VHF发射接收器系统的一个显著优势是其穿透障碍物（如建筑物和树木）的能力。与较高频率的系统相比，后者可能因物理障碍而面临干扰和信号衰减的问题，低VHF信号可以更长距离传播并保持清晰度。这一特性使其成为通信基础设施可能有限的农村地区的理想选择。此外，低VHF发射接收器常被应用于应急服务和公共安全通信。警察、消防部门和医疗响应人员利用这些系统在紧急情况下协调工作。低VHF频率的可靠性和范围确保了即使在困难环境中也能传递关键信息，从而挽救生命并提高响应速度。然而，必须理解，使用低VHF发射接收器并非没有挑战。例如，低VHF范围内可用的带宽相较于高频率而言是有限的。这种限制可能导致拥堵，尤其是在城市地区，许多用户共享同一频率。此外，尽管低VHF信号非常适合长距离通信，但它们可能无法支持现代应用所需的高速数据传输，例如视频流或高速互联网。总之，低VHF发射接收器是电信领域不可或缺的工具。其独特特性使其适用于多种应用，特别是在需要可靠长距离通信的场景中。随着技术的不断进步，这些系统的角色可能会演变，以适应新的需求和挑战。了解它们的工作原理及其在我们日常生活中的重要性，对于任何对通信领域感兴趣的人来说都是至关重要的。无论是个人使用还是专业应用，低VHF发射接收器仍然是有效通信网络的基本组成部分。