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VHF Data Radio

m7-smallVery High Frequencies (VHF) have been used for voice and data radio communications since the middle of the last century. Bands withing the frequency range of136-174MHz are used throughout the world for reliable wireless data communications.

In the United States and in many other countries, the 136-174 MHz range is used for commercial wireless communications. Raveon has data radios in these bands:

A)136-155MHz

B) 150-174MHz

VHF Radio Frequencies

The two major data radio modem bands used worldwide are the Ultra High Frequency (UHF) band and the Very High Frequency (VHF) band. Raveon provideds data radio modems in both the VHF abd UHF bands.

VHF and UHF each have advantages and disadvantages to them. There is no one best band. VHF antenna are typically larger that UHF, but in many instances, the communication range will be greater with a VHF system. UHF has a shorter wave length, so the antennas are more compact and less obtrusive.

UHF signals may penetrate foliage better, and will reflect off of rock and other obstructions very well. UHF will also work indoors somewhat better than VHF and it penetrates buildings better. In open areas, most users will find that VHF data radios communicate furthur then UHF data radios. But in heavily wooded areas, or rough terrain, UHF data radios may work better.

For more details about Raveon’s VHF data radio products, click on the Products link above or visit
http://www.raveontech.com/Products.html

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