They can be divided into three broad categories&colon; transmitters, receivers and transceivers. The Yaesu FT-857 is one of the smallest MF/HF/VHF/UHF multimode general-coverage amateur radio transceivers. Gigabit Ethernet transceivers and offerings from Intel and ICS. Modern optical SFP transceivers support standard digital diagnostics monitoring (DDM) functions. There are inexpensive adapters allowing SFP transceivers to be placed in a QSFP port. Repackaged for use in several other receivers and transceivers. The digital modulation method is analogous to those used in simple radio transceivers. Trans-oceanic aircraft also carry HF radio and satellite transceivers. "Communication Radio Telecommunication France" is a company producing amateur radio transceivers. This project involves interfacing Icom's UT-118 with other manufacturer's amateur radio transceivers. Communications are provided by a pair of Collins ARC-182 transceivers. Most modern amateur radio SSB transceivers have speech compressors built in. The signal is usually picked up by portable transceivers carried by personnel. Walkie-talkies (also known as HTs or "handheld transceivers") are widely used among amateur radio operators. They may contain one or multiple and different transceivers between nodes.