Learn About Two Way Radios


Two way radios are electronic devices that send and receive signals. The AM/FM radio in your car or at home is a one way radio. These radios can only receive a signal. You can listen to your AM/FM radio but you can’t talk back to the radio station. Two way radios let you listen and talk.

Radios (this could be a popular radio station or a hand held two way radio) transmit or broadcast on a specific frequency. A popular radio station is known by its frequency; Talk 790 AM or Sunny 95.5 FM. 790 and 95.5 are these stations’ frequencies (measured in kilo hertz for AM radio or mega hertz for FM radio.) Likewise every two way radio transmits or broadcasts on a specific frequency. Two way radios broadcast in the VHF range (very high frequency) or UHF range (ultra high frequency). The difference between VHF and UHF is like the difference between AM and FM for public radio stations.

The second factor in radio broadcasting is the power of the signal measured in “watts.” A commercial radio station might broadcast at 5000, 10000 or 50000 watts. The more wattage or power the further the signal will travel. The Federal Communications Commission (FCC) allows hand held 2 way radios to transmit at 1-5 watts and mobile radios (the kind you might find in a fleet of delivery trucks or taxi cabs) broadcast from 25 watts up to 50 watts. Some mobile radios, also used for base stations, transmit up to 100 watts.

The third factor in radio broadcasting is those things that might block a radio signal. If a radio signal is blocked by buildings, walls, trees or mountains the signal won’t reach the receiving radio. To solve this problem commercial radio stations broadcast from towers. This way the signal is beamed out and down to people wanting to listen to the station. It doesn’t take much power if a receiving radio doesn’t have anything between it and the sending radio tower or antenna. For example the radios that the astronauts used on the moon broadcast with less than 5 watts because there is nothing between the moon and earth to block the signal.


2 Way Radio Recommendations


We usually recommend UHF 2 way radios because the signal that is produced has better ability to travel around objects like trees and buildings. We recommend VHF 2 way radios when they are going to be used in an airplane, on a boat, or outside where there is little between the sender and the receiver. Under these conditions VHF travels further than UHF.

Because some facilities are quite large and two way radios have a limited range, special amplifiers (called repeaters) can be used to extend the 2 way radio range. Generally speaking, two way radios have a range of a couple of miles. The use of repeaters can extend the range or provide better reception in areas with a lot of obstacles.

Two way radios can have multiple channels, just like an AM or a FM radio, and can be tuned to different stations. The two-way radios we sell at Fast Radios could have anywhere from 1 to 16 or as many as 256 different channels. Each channel has a different frequency so people listening and talking on channel 1 won’t hear people talking on channel 2 or one of the other channels. This is particularly important to our customers that want a group of employees to be able to talk to each other without interfering with other groups of employees. For example in a hotel the housekeeping people can use one channel, the maintenance people can use another channel and the banquet people can use a third channel without everyone hearing everything that is being transmitted.


Commercial 2 Way Radios for Business


Would you like some help in solving your communications problems? Would you like to learn more about how 2 way radios can help your company, business, school or hospital become more productive and safe through effective communication?

Call 1-800-691-3970 now. We’re as close as your phone. Or Complete the FREE Online Two Way Radio Guide


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