Short Answer
UHF is often well suited for buildings, urban environments, and compact antennas, while VHF may have advantages in open terrain and for certain applications. However, there is no universally best solution. Critical factors include the location of use, radio licenses, antennas, topography, building structure, interferences, and existing systems. In professional projects, the choice should be supported by measurements and frequency planning.
The question of UHF or VHF is one of the most common radio inquiries. The correct answer is rarely a single frequency band but rather a technical consideration.
UHF and VHF Comparison
| Criterion | UHF | VHF |
|---|---|---|
| Buildings | Often cheaper in indoor areas. | May depend more on structure and antenna. |
| Open Terrain | Good, but not always optimal. | Often strong in clear line-of-sight with suitable antenna. |
| Antenna | More compact antennas are possible. | Longer antennas are common. |
| Availability | Dependent on frequency planning. | Dependent on frequency planning. |
How to Decide Correctly?
- Consider the location: buildings, terrain, vehicles, basements.
- Consider existing systems and frequencies.
- Include antenna locations and device form factors.
- Conduct radio measurements and frequency clarifications.
- Check for expandability and accessories.
Typical Mistakes
Often, VHF is simplistically equated with range, and UHF with buildings. This as a mnemonic is helpful but does not replace a site review.
FAQ
Which is better: UHF or VHF?
It depends on the application. UHF is often strong in buildings, while VHF can have advantages in open terrain.
Is PMR446 UHF?
Yes, PMR446 is in the UHF range. However, it is a separate license-free radio service with clear boundaries.
What frequency does the fire department use?
This depends on the country, organization, and system. In Switzerland, POLYCOM and alerting/pager solutions are among the key players.
Can you mix UHF and VHF?
Only with appropriate devices, frequencies, and system concepts. Devices do not automatically operate on both bands.
Sources and Currency
This page was created on July 6, 2026. Technical and regulatory information must be cross-referenced with current manufacturer data, standards, frequency specifications, and site conditions for concrete projects.