Introduction
Although, cell phones have largely taken over our daily communications, sometimes the reception and clarity of a land line is preferable. On the other hand, you don't always want to sit or stand in one place to have a phone conversation. The cordless phone makes using a phone around the house as convenient as possible, allowing you to travel anywhere within range and keep up with the other tasks in your life while talking on the phone. If you've ever wondered how the cordless phone is able to clearly transmit your conversation, here's a look at the process.
Sound
Sound is transmitted through sound waves. In a traditional hardwired telephone, the voice of the person you're speaking with is converted into sound waves by a microphone and then sent via electrical current through the phone line and into your phone where a speaker converts the current back into audible sound waves that allow you to hear the person's voice. A cordless phone performs this exact function; however, since there is no wire to connect your phone's receiver, a radio serves to bridge the gap between the base and the handheld receiver.
Transmission
The two main parts of the cordless phone are the base and the handset. The base is plugged into the phone jack and electrical outlet. It receives the signal from the phone jack, and then a radio transmitter in the base sends the signal via radio wave to the handheld receiver and vice versa when you talk into the phone. This happens for both the ring and the actual phone conversation. The radio transmitter pushes current up and down the antenna until it creates an electromagnetic field that sends radio waves out. You've probably noticed that cell phones come in varying frequencies. These relate to the frequency of the radio wave that the phone transmits.
Reception
The radio waves are picked up by the handset's antenna and are then sent to the speaker on your phone allowing you to hear. When you speak, the headset transmits radio waves to the base, and the base then sends through the phone line and back to the person you're speaking with. Cordless phones use a duplex frequency, which allows them to transmit and receive at the same time (as opposed to a radio, which only receives).
Tags: cordless phone, radio waves, sound waves, your phone, cell phones, handheld receiver, into phone