VHF and UHF Frequency Bands
Differences Between VHF and UHF Frequency Bands – When it comes to frequency bands, VHF and UHF are often sought after for their effectiveness. However, not everyone understands the difference between the two when using them.
Frequency bands are simply intervals of frequencies within the electromagnetic spectrum, used in various ways in the world of radio communication, regulated by the UNT depending on the location. In addition to this, within radio frequency, they are divided into frequency-based and application-based bands.
In this article, we will focus on frequency-based bands, namely VHF and UHF. If you’re not familiar with the differences between them, this article will explain what sets them apart and when to use each.
What Are VHF and UHF Frequencies?
Understanding what VHF and UHF frequencies are will help you choose the one that is recommended for your specific use case. Each type of wireless communication, such as radios and phones, operates on different frequencies. Therefore, before delving into their differences, it’s important to understand what they are.
This will provide a better understanding of what each type of frequency band can achieve. Afterward, we will explore their respective ranges more thoroughly. Let’s start by defining each of them.
VHF stands for “Very High Frequency.” It encompasses various frequencies, with the lowest ranging from 49 MHz to 108 MHz and the highest from 169 MHz to 216 MHz. However, its complete range extends from 30 MHz to as high as 300 MHz. VHF waves have wavelengths ranging from 10 meters to 1 meter.
They propagate directly and are rarely affected by ionospheric or tropospheric conditions. VHF is commonly used for short-distance radios, television signals, and FM radio broadcasting.
One noteworthy application of VHF is in aviation, where aircraft at airports use VHF frequencies due to the short distances between aircraft and control centers. In these cases, the frequencies typically range from 118 MHz to 136 MHz, with amplitude modulation (AM) for communication.
Continuing with our exploration of the differences between VHF and UHF, let’s explain the latter. UHF stands for “Ultra High Frequency,” with frequencies ranging from 378 MHz to 512 MHz at the lower end and from 764 MHz to 870 MHz at the higher end.
However, its full range extends from 300 MHz to 3000 MHz. UHF waves have wavelengths ranging from 1 meter to 10 centimeters. They propagate directly, but they can also reflect or be relayed by artificial satellites. UHF is commonly used for radio links, radar systems, air navigation, and television broadcasting.
Who Uses These Bands?
VHF bands are typically used by communication personnel in navigation, such as boats and maritime crews. They are especially important for short-range communication. Additionally, channel 16 on radios is often reserved for emergencies.
On the other hand, UHF bands are more commonly used by public safety entities, including the police, fire departments, and emergency medical services (EMS). Their communication channels typically range from 7 MHz to 80 MHz. Within communities, UHF is used for mobile phones, television, and radio operators.
Security personnel also frequently use UHF communication, whether in casinos, construction sites, warehouses, or hospitals. Its efficient communication within buildings or different departments makes it a popular choice.
Understanding the Difference Between VHF and UHF
Now that we have a better understanding of these two frequency bands, let’s explore their differences in more detail so that you can make an informed choice.
One of the main differences between VHF and UHF is the width of their coverage. Graphically, UHF waves are much shorter than VHF waves. This characteristic allows UHF to be more efficient in communications when there are obstacles such as buildings, trees, or hills.
Conversely, VHF waves are more easily degraded, making signal reception more challenging when there are many walls, trees, or hills in the way. This also affects the cost of both types, with UHF being more expensive.
Another significant difference is in battery life. UHF radios tend to consume battery power more quickly due to their higher frequency, while VHF radios can have a longer battery life.
Antennas for Receiving These Bands
Now that we understand the differences between VHF and UHF bands, let’s explore some receiving antennas available in our store. Each of these antennas is designed to meet specific needs for these frequency bands.
1. HUSTLER G6-450-1 Fiberglass Base Antenna
We begin with a high-quality fiberglass base antenna from the renowned brand HUSTLER. This antenna offers excellent performance, quality, and durability for receiving UHF frequency bands. Its electrical design provides better coverage reception with a stable pattern.
For the FM band, this antenna covers frequencies from 450 MHz to 458 MHz and can withstand wind speeds of up to 200 km/h. It weighs only 3.63 kilograms and has a height of up to 2.2 meters, all covered in fiberglass for a direct ground connection to protect against electrical discharges.
2. HUSTLER G7-150-4 Aluminum Base Antenna
Next, we have another antenna from the highly regarded HUSTLER brand, part of their G series known for high quality. This model, unlike the previous one, is constructed with an aluminum base to withstand various environmental conditions.
This antenna receives VHF and FM radio bands in the range of 167 MHz to 174 MHz. It can withstand wind speeds of up to 161 m/h and has a height of 4.4 meters for extended range. It also features a direct ground connection to protect against electrical discharges.
3. HUSTLER LMB-150 Mobile Antenna
Our list concludes with a mobile antenna designed for optimal performance through its stainless steel 17-7 PH rod. Built to resist corrosion and last for many years, this antenna receives VHF radio and FM bands within the 148 MHz to 174 MHz range.
It has a power rating of 200 W and can reach heights of up to 130 centimeters, making it an ideal companion for situations requiring mobility.
Do You Now Understand the Difference Between VHF and UHF?
Now that we have explored these VHF and UHF options, you can make an informed decision based on your communication needs.
Understanding the differences between VHF and UHF bands is crucial for selecting the right one for your specific application. Additionally, the antenna options provided here can improve your reception for these frequency bands.