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There are many fields of operation where keeping in touch every moment is important. For such operations, portable two way radio is a must. If you are new to such a field, and don’t know much about such radios, then here are some basic facts about such radios which will help you to choose the best one for yourself: • First of all, there are two formats of portable radios--- UHF or Ultra High Frequency and Very High Frequency or VHF. There is not much difference between the two; both are equally efficient in helping you to communicate. It is your application that will decide which type you will need for your job. • UHF has gained usage in recent years. That is why it has more available channels and so if your need is in a populated area, then this type of portable radio will be a good choice. Also UHF radios are better within a building as the short wavelength of UHF can finds its way more through spaces. • VHF portable two way radios are better in thinly populated area. It travels more area in comparison to UHF radios. But they are not good within a building also since it is in use for a long time now, very few available frequencies are left. Also since FM radio and television broadcasts use VHF for transmission, interference is a big problem with VHF two way radios. • Next important thing to know about your two way radio is its range. It can be anything from few tens of miles to a few hundred meters. In this regard, the signal range you will find in the box of your two way radio may be slightly more than their actual output. It is not false advertising; the manufacturer just reports the best range possible in an optimal condition, something you will rarely have. With the advancement of cellular technology, portable radio saw a slump in demand. However, seeing how cellular technology can be disturbed as it happened in 9/11 or during natural calamity, the demand of portable radio is again rising.
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