Do you know these about radios?

Do you know these about radios?

1. The difference between UHF and VHF

There are UHF and VHF versions of radios, so what’s the difference? Which version should I choose, and how do I know which version I should choose?

First, UHF and VHF are different frequency bands, UHF is suitable for use in areas with many obstacles, and VHF is suitable for open areas with few obstructions. If you need to use the radio in an area with dense crowds and many obstacles, you can choose the UHF version; if you use it in an open area with few obstacles, you can choose the VHF version.

Please note that the radios in the UHF band and the VHF band cannot communicate with each other. When making a selection, please pay attention to the frequency band if it can communicate with your existing radios.


For analog radios, if a radio has CTC/DCSS turned on, the other radios that want to communicate with the radio also need to set the corresponding CTC/DCSS. In a word, if analog radios want to communicate with each other, not only the same frequency, but also the same CTC/DCSS is required. It is also possible to turn off the CTC/DCSS of the two radios. If the analog radios cannot communicate with each other, please check whether the CTC/DCSS settings of the radios are the same.


Most of the license-free radios will have the FRS version, MURS version and PMR446 version. What are the differences between the different versions and how should you choose?

First, the FRS version and the MURS version are license-free radios suitable for use in the United States. FRS is in the UHF frequency band, and MURS is in the VHF frequency band.

Secondly, PMR446 is a license-free radio suitable for use in Europe, and its frequency band is within the UHF frequency band.

Now do you know these about radios?

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