They are not always different. If the communication is between two radios directly, only one frequency is used. This is called simplex operation. It works fine because only one radio is transmitting at a time.
When two radios communicate through a repeater to increase the distance, the repeater must simultaneously receive from one radio while retransmitting the signal to the other radio. A single frequency would not work because the repeater would only hear its own output. So, two frequencies are used. This is called duplex operation.
The above information is partially incorrect. Simplex and duplex do not refer to how many frequencies are used. They refer to the way traffic (data and voice) are sent and received.
The reason for different receive and transmit frequencies is for retransmitting (like stated above) and for satellite communications. Satellites receive on one frequency, then modify, amplify, and retransmit the signal on a different frequency to prevent bleedover.
The tools for performing Radio Frequency Identification (RFID) would be a two-way radio transmitter-receiver and a magnetic field that powers and reads RFID's at a short distance.
A two way radio allows two persons to communicate with each other while separated by some sort of distance. A wireless frequency is used for them to communicate and they must be on the same channel.
Two way radios are used to transmit and receive. What I mean by that is a two way radio allows two people to talk to each with similar devices on the same radio frequency. It's rather unique! One (the operator) can talk, and the other listen. This device allows police officers, detectives, and many other jobs easier.
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Full duplex is when two frequencies are used for stations to transmit to and receive transmissions from each other. A station will transmit on one frequency, while receiving on a different frequency. This is often accomplished through the use of repeater towers. Radiotelephones, cellular telephones, and some two way systems used in businesses, state provided services, and amateur radio are examples of this.
When you purchase your radio system you will also purchase an FCC licence to operate which will give you your own frequency. You can also arrange to have your frequency added to a local repeater so your system will have greater range.
The tools for performing Radio Frequency Identification (RFID) would be a two-way radio transmitter-receiver and a magnetic field that powers and reads RFID's at a short distance.
To find out the frequency you need to buy a frequency counter but they are quite deer so try searching on internet or talk to people that use radios alot and they could tell you
The only way your radio has of separating one station out of the pile, and letting you listen to the one single station you want to hear, is by frequency. If two stations are on the same frequency, then your radio hears them both when it's tuned to that frequency. If there are 100 of them, you hear all 100. The result of that is . . . well, just listen to CB some time.
A two way radio allows two persons to communicate with each other while separated by some sort of distance. A wireless frequency is used for them to communicate and they must be on the same channel.
You can use them to communicate with other people when you need to. Example: A cellphone is a two-way radio.
UHF (Ultra High Frequency) is commonly used for television broadcasting, two-way radio communication, GPS systems, and RFID (Radio Frequency Identification) technology. It is also utilized for wireless networking, satellite communication, and remote control devices.
Radio communication typically uses electromagnetic waves in the radio frequency range, specifically in the Very High Frequency (VHF) and Ultra High Frequency (UHF) bands. These waves have wavelengths that are suitable for transmitting signals over long distances and are commonly used for broadcasting, two-way radio communication, and cellular communications.
Citizens band (CB) radio Two-way radio communication
Two way radios are used to transmit and receive. What I mean by that is a two way radio allows two people to talk to each with similar devices on the same radio frequency. It's rather unique! One (the operator) can talk, and the other listen. This device allows police officers, detectives, and many other jobs easier.
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No the circuits are not designed to handle video frequency