![]() Most two-way radios used today have a frequency range somewhere within 130MHz to 900MHz (except CB & Ham radios). BUT, low frequencies are susceptible to some other issues. CB radios, and some HAM frequencies, are in the HF (High Frequency) range of 29-54MHz, giving them some of these qualities. As a general rule, the lower the frequency, the greater distance it can travel. So these low frequency signals can sometimes be received by radios below the horizon hundreds of miles away. They differ in how they travel, and how they react when they encounter materials.įrequencies below 2MHz (Megahertz) are reflected off the atmosphere, thus they can follow the Earth's curvature. Let's discuss each of these.įirst, not all radio signals are the same. ![]() But taken in combination, they can mean the difference between getting 1/2 mile range, vs 6 miles or more. No single factor is a silver-bullet to extend your communication range. The key considerations that affect range are: signal type, antenna, obstructions, and signal strength (wattage). Discuss new technologies for long range communication.Understand the key factors affecting communication range.That's because the type of equipment and terrain can greatly affect your range. Unfortunately there isn't a quick answer. "How far can this radio talk?" is one of the most common questions people ask when buying a two-way radio. So how far can you really expect to talk? ![]() This maximum range is more theoretical than realistic. The key words in the advertisement are "up to". If you search for reviews on these same radios, you will find many disappointed people saying they can't get anywhere close to the advertised range. You often see ads for two-way radios saying "up to 36 miles" or more. ![]()
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