VHF or UHF two way radios?
One of the first steps to take before purchasing new radios is to determine the best frequency band for your needs.
Why is this important, you ask? The simple answer is that it ensures the best possible results for your particular environment.
UHF (Ultra High Frequency) and VHF (Very High Frequency) are the two most commonly used radio frequencies (read more about their differences in our blog post here). While they do have some similarities, there are a few factors that set them apart from each other.
This blog post will help you understand their differences so that you choose the right radios for your needs.
1. Is Your Existing Radio System VHF Or UHF?
To ensure new two way radios are compatible with an existing radio system, you must stay within the same frequency band. In other words, if you are currently using VHF and want your new radios to be able to communicate with the ones you already have, the new radios must also be VHF.
2. Is Your Current Radio System Digital or Analog?
Another important factor is whether your current system is digital or analog – most newer systems in the last five years will be digital, but it is important to confirm this.
Also, a number of the newer radios can operate in either analog or digital mode, but it’s always important to confirm. However, keep in mind that even if you are adding a piece of digital equipment to an existing digital system, they may not be compatible.
Similar to the old VHS vs. Beta scenario from the 1980s on video records, two way radios have a similar consideration today. For example, Motorola digital two way radios can’t work on an ICOM digital radio system.
Be sure to do research to ensure compatibility when adding new equipment to an existing system or talk to one of our experts here at Nova Communications. We provide UHF radios and VHF radios in Canada and would be happy to help you find the best radio solution for your needs.
3. Will You Be Using the Radios Indoors or Out?
Both UHF and VHF are considered line-of-sight systems. This doesn’t mean that you must be close enough to actually see the person with whom you are communicating – all it means is that antennae are used for communication.
You can increase the height of the antenna to increase the distance and quality of communication. For example: two people trying to talk on flat ground will be able to talk about one to two kilometers generally, but if those same two people are trying to talk, but one is on top of a mountain or hill, they will be able to communicate considerably further.
The spectrum of each frequency band has a significant impact on the quality of communication. The VHF spectrum is 136 to 174 MHz, while the UHF spectrum is 403 to 470 MHz in Canada. Basically, the higher the frequency, the better the in-building penetration.
- VHF = Ideal For Outdoor Environments
Lower frequencies travel further in non-obstructed environments. VHF, when operating at 136-174 MHZ, has excellent distance on flat ground, but works very poorly in buildings.
The lower frequency of VHF radios means they have a longer wavelength: they naturally travel longer distances, but can’t penetrate solid materials very well. This makes them better suited for outdoor professions like forestry and oil.
- UHF = Ideal for Indoor Environments
UHF, when operating at 403-470 MHZ, offers the best of both worlds. It has good distance and works well inside buildings. 900 MHZ is excellent for built-up indoor environments but does not offer great distance.
Because UHF radios have a shorter wavelength, they penetrate materials more easily, which is why they’re suited for indoor use – things like steel and concrete aren’t obstacles for UHF radios, which are often used by schools, warehouses, and retail stores.
As a standard rule in Canada, about 85% of radios sold are either in the UHF, or higher frequencies like 700 MHz (for public safety) or 900 MHz. Please feel free to contact us and we’d be pleased to help you select the right frequency range for your business.
Wrapping It Up
Choosing the right frequency band is important because it ensures that your radio is suited toward your unique environment.
However, no matter what band you choose, the most important thing is that you get a quality system. When it comes to radio communications, quality definitely matters.
Recommended Further Reading:
- How to Identify Your Organization’s Frequency Needs and Which Features to Look For to Get Maximum Return on Your Budget
We’ll be happy to help you determine what kind of radio would best suit your needs, and point you toward resources and reviews so you can narrow the field and make an educated choice. Contact us for help in getting started.
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