Very high frequency - Wikipedia
网页Very high frequency (VHF) is the ITU designation [1] for the range of radio frequency electromagnetic waves (radio waves) from 30 to 300 megahertz (MHz), with corresponding wavelengths of ten meters to one meter.
Marine VHF radio - Wikipedia
网页Marine VHF radio is a worldwide system of two way radio transceivers on ships and watercraft used for bidirectional voice communication from ship-to-ship, ship-to-shore (for example with harbormasters), and in certain circumstances ship-to-aircraft.
The Differences Between UHF and VHF Radio Frequencies
网页2021年4月24日 · In a general sense, UHF’s shorter radio waves make it best-suited for wireless and indoor use, where there are more penetrable obstacles. On the other hand, VHF is excellent for outdoor use; construction workers, aviators, and boat captains rely on VHF radios on their crafts.
VHF Propagation Map
网页VHF Propagation Map This map shows real-time radio propagation from stations operated near 144 MHz. It uses data gathered by Automatic Packet Reporting System-Internet Service (APRS-IS) from packet stations in the amateur radio service. The map shows activity from the past hour.
UHF vs VHF - Learn about radio frequencies - Radio Depot
网页2020年8月15日 · UHF (Ultra High Frequency) and VHF (Very High Frequency) two-way radios each have their advantages and disadvantages. We will discuss these advantages and disadvantages in the sections that follow so that you can choose the correct frequency band for your application.
What Is the Difference between a UHF and a VHF Antenna?
网页2022年10月31日 · The main difference between a UHF and a VHF antenna is in the way it’s designed to each receive a specific frequency band: A VHF antenna receives television signals in the VHF frequency band (54 – 216 MHz). VHF antennas typically have larger elements to capture the longer wavelengths of VHF signals.
VHF vs UHF Radios: The Differences Explained - Stryker Radios
网页2023年7月17日 · In this article, we’ll explain what UHF and VHF radios are, how they work, and give tips on which one is right for you. What are UHF and VHF? UHF, short for “Ultra High Frequency,” and VHF, short for “Very High Frequency,” are two types of …
VHF vs. UHF Radio Frequencies: Differences Explained
网页2023年8月25日 · The primary difference between UHF and VHF radios is their frequency. UHF radios have a wider range of frequencies and work well indoors, VHF radios have smaller frequency so it allows them to reach long distances but also means they can be interrupted by other radios.
Very High Frequency (VHF)/Ultra High Frequency (UHF)
网页Very High Frequency (VHF) and Ultra High Frequency (UHF) radios are by far the mostly commonly used radio type by governments, military, police, maritime organisations, emergency responders and other entities that operate in environments when regular communications networks may be inconsistent or not properly functioning.
VHF Definition & Meaning - Merriam-Webster
网页What does the abbreviation VHF stand for? Meaning: very high frequency.