Understanding the difference between UHF and VHF two way radios

What does VHF or UHF stand for?

One of the first steps to take before purchasing a new two-way radios is to determine the best frequency band for your needs. The reason behind this is to ensure you receive optimum results from your investment. 

By selecting the right frequency band for your radio system you can ensure that it will support your workplace environment, thus increasing productivity and safety for your team.

There are two radio frequency bands available VHF (Very High Frequency) and UHF (Ultra High Frequency). Generally, VHF (very high frequency) radio systems are used for short-range communication, while UHF (ultra high frequency) radio systems are used for longer-range communication. There is also less interference and better signal clarity when you compare UHF to VHF radios.

Commercial two-way VHF radios typically have a high band of between 136-174 MHz, while commercial two-way UHF radios have a high band of 420-470 MHz. The higher the frequency, the better the in-building penetration.

Consider where you will be using your two way radios

The selection of UHF or VHF does depended on your required operational area, both UHF and VHF are considered line-of-sight two way radio systems, which means they rely on a direct path between the sender and receiver. 

• A major advantage of UHF walk talkie radios is their ability to work through signal barriers such as concrete, steel, and wood. As a result, this type of radio is best suited for use indoors, including in multi-level buildings. UHF radios also have a much longer range than VHF radios, allowing them to communicate over greater distances. Furthermore, they are ideal for businesses that operate both indoors and outdoors.
• It is recommended that you use VHF two-way radios outside, as their signal has a tendency to degrade in built up areas with many obstacles such as tall buildings.
• When simple back to back (radio to radio) communications do not reach the required coverage footprint the range can be extended through the use of a repeater base station and antenna on the same frequency band.

Below are examples of where you would deploy UHF or VHF radios systems

VHF

• Farming and agriculture
• Road and bridge construction
• Search & rescue
• Logistics & Transportation
• Forestry
• Offshore

 UHF

• Construction sites
• Manufacturing, factories, and warehouses
• Hotels
• Hospitals
• Museums and theatres
• Shopping centres
• Schools, colleges and universities

Can UHF and VHF radios talk to each other?

No, UHF and VHF radios operate on different frequencies and are not compatible with each other.