Transceiver

One large use is in two-way radios, which are audio transceivers used for bidirectional person-to-person voice communication.

uses transceivers, but there is an active market for pure radio receivers, which are mainly used by shortwave listening operators.

[citation needed] Analog transceivers use frequency modulation to send and receive data.

Although this technique limits the complexity of the data that can be broadcast, analog transceivers operate very reliably and are used in many emergency communication systems.

They are also cheaper than digital transceivers, which makes them popular with the CB and HAM radio communities.

This allows more types of data to be broadcast, including video and encrypted communication, which is commonly used by police and fire departments.

Transceivers are called Medium Attachment Units (MAUs) in IEEE 802.3 documents and were widely used in 10BASE2 and 10BASE5 Ethernet networks.

A modern HF transceiver with a spectrum analyzer and DSP capabilities
A decapped integrated circuit of a transceiver used in handheld communication devices and radio equipment as a modem extension. On-die passfilters are visible.
100BASE-TX connected to a 100BASE-FX transceiver