UHF Ultra High Frequency (300 MHZ and 3000 MHZ) and VHF Very High Frequency (30 MHZ and 300 MHZ) are widely used two different frequencies on same spectrum. Both the frequencies can be used for short distance, and they have their own advantages and disadvantages. Let us discuss about how to choose the best frequency. The points to consider before choosing this are coverage, cost, clarity and availability.
UHF at full power and line of sight can range up to 4+ miles, the signals bounce and good for using in a downtown environment, that is the coverage and performance is good in thickly populated areas. Basically short waves are produced and there by this doesn’t require external antenna. They are suitable for operating GPS, Bluetooth, Wi-Fi, etc., it requires license which is expensive, the device cost and setting up cost is high. Since it can be accessible for 30 floors vertically, it is recommended for both indoor use and outdoor use. Obviously when used in wireless radio, it consumes more power and reduces battery life.
VHF at full power and line of sight can range between 270000 sq ft and 300000 sq ft, and is suitable for operating FM radio, two-way radios, walkies, cordless, house hold gadgets etc. It is not restricted by any types of license to operate for personal use, but for business operation it requires license. This frequency hates obstacles but bends to Earth’s curvature so will not be suitable for indoor use, but good for outdoor use. Setting up an external antenna will boost performance and quality. Radios using this frequency consume less power thereby increasing battery life, the setup cost is low and device cost is also comparatively low.
In brief, UHF is expensive but good, VHF is cheap but it lacks few features of UHF. This is a simple formula to decide by – Higher Frequency = Better Quality, Less Range, and Lower Frequency = Lower Quality, More Range. Based on these descriptions the user can choose whatever is suitable for them.
If you are a new user thinking “should I choose UHF or VHF two-way radios?”, and who doesn’t have much awareness of frequencies, it is recommended to use radios that come bundled with both the frequencies, so that you can choose as per your liking. Always look for trial pack operation and try to use both the frequencies thoroughly before you decide and purchase.