Roy’s Two-Way Radios

Digital two way radios may communicate text from computer-aided dispatch. For example, a display in a tow truck may give a textual location for a call and any related details. The tow truck driver may press an acknowledge button, sending data in the opposite direction and flagging the call as received by the driver. They can be used for analog telemetry systems, such as livestock tank levels, as described above. Analog conditions are translated into data words. Some systems send radio paging messages which can either: 1) beep a paging receiver, 2) send a numeric message, or 3) send a text message.

Digital systems typically use data rates in the 1,200-19,200 kilobit-per-second rates and may employ modulation schemes such as frequency shift keying, audio frequency shift keying, or quadrature phase shift keying to encode characters. Modern equipment have the same capabilities to carry data as are found in Internet Protocol. Working within the system’s protocol constraints, virtually anything can be sent or received.

A two way radio is a radio that can both transmit and receive, unlike a broadcast receiver which only receives content one way. A push-to-talk or “Press To Transmit” button is often present to activate the transmitter. Hand-held portable two-way radios are often called walkie-talkies. Two-way radios are available in mobile and stationary base configurations.

An example of a two-way radio that both transmits and receives at the same time is a cellular telephone, which uses two different radio frequencies to carry the two directions of the conversation simultaneously.

At Roy’s Two Way Radios, we have been working hard to bring newer and better products to the table. So while we are doing so, I wanted to remind everybody that if you we should add specific radios, a specific manufacturer, or any other products you think we should carry. Let us know! Send an email to support@roystwowayradios.com and let us know what you want to see on our site!

Once again, we are sorry for the lack of products lately and thank you for your patience, but please keep checking the site for new products. If you have any questions or comments, Email Us!