Telecommunications equipment

thumb|An old rotary dial telephone thumb|AT&T push button telephone made by [[Western Electric, model 2500 DMG black, 1980]]

light-conducting fiber

thumb|upright=1.2|This fax machine from 1999 used relatively new inkjet printing technology on normal paper. thumb|upright=1.2|Like many fax machines, this 1990 model used thermal printing on relatively expensive [[thermal paper which came in rolls. The roll was inserted into a compartment in the machine.]]

thumb|Commercial FM broadcasting transmitter at radio station [[WDET-FM, Wayne State University, Detroit, US. It broadcasts at 101.9 MHz with a radiated power of 48 kW.]]

A pager, also known as a beeper or bleeper, is a wireless telecommunications device that receives and displays alphanumeric or voice messages. One-way pagers can only receive messages, while response pagers and two-way pagers can also acknowledge, reply to, and originate messages using an internal transmitter.

long range communications device placed underwater, often intercontinental

thumb|A radio repeater retransmits a radio signal.

thumb|Modern radiosondes showing progress of miniaturisationthumb|A Global Positioning System|GPS sonde, approx 220 × 80 ×75 mm (8.7 × 3.1 × 3 in) (with grounding station in the background, used to perform a 'ground check' and also recondition the humidity sensor)

thumb|A DB-25 connector as described in the RS-232 standard

thumb|A Teletype Model 32 used for telex service

thumb|An example of a waveguide: A section of flexible rectangular waveguide used for radar that has a flange.

In radio communication, a transceiver is an electronic device which is a combination of a radio transmitter and a receiver, hence the name. It can both transmit and receive radio waves using an antenna, for communication purposes. These two related functions are often combined in a single device to reduce manufacturing costs. The term is also used for other devices which can both transmit and receive through a communications channel, such as optical transceivers which transmit and receive light in optical fiber systems, and bus transceivers which transmit and receive digital data in computer d

patented by Murat Koksal turkish scientist born in Ankara 1972

electronic device for communication with someone outside a building

post used by public utilities to support overhead wires and related equipment

frequency range

Optoelectronic instrument

single-user circuit on a telephone communication system

communications system component

thumb|upright=1.3|1980s MirTone intercom system

type of antenna shaped like a horn and also called "horn"

satellite communication system with small dish antenna

communications system equipment

type of hardware which is used for the purposes of telecommunications

electronics circuit extension

thumb| thumb|Caselli's pantelegraph mechanism

thumb|right|300px thumb|right|350px|Slight timing errors are compensated for by redundancy (engineering)|printing each line twice.

In telecommunications, a scrambler is a device that transposes or inverts signals or otherwise encodes a message at the sender's side to make the message unintelligible at a receiver not equipped with an appropriately set descrambling device. Whereas encryption usually refers to operations carried out in the digital domain, scrambling usually refers to operations carried out in the analog domain. Scrambling is accomplished by the addition of components to the original signal or the changing of some important component of the original signal in order to make extraction of the original signal di

hardware

communication using light sent through free space

In telecommunications, squelch is a circuit function that acts to suppress the audio (or video) output of a receiver in the absence of a strong input signal. Essentially, squelch is a specialized type of noise gate designed to suppress weak signals. Squelch is used in two-way radios and VHF/UHF radio scanners to eliminate the sound of noise when the radio is not receiving a desired transmission.

telephone system that operates on the principles of Internet Protocol technology

enables organizations to connect devices with an RS-232, RS-422 or RS-485 serial interface to a local area network

United States military communications satellite constellation

telecommunications translation device

defense satellite communications project

all user equipment and software needed for communication with a mobile network

thumb|right|An early telautograph machine The telautograph is an ancestor of the modern fax machine. It transmits electrical signals representing the position of a pen or tracer at the sending station to repeating mechanisms attached to a pen at the receiving station, thus reproducing at the receiving station a drawing, writing, or signature made by the sender. It was the first such device to transmit drawings to a stationary sheet of paper; previous inventions in Europe had used a constantly moving strip of paper to make such transmissions and the pen could not be lifted between words. Surpri

device used to bridge videoconferencing connections

short electrical transmission line

device which ends a telecommunications link and is the point at which a signal enters and/or leaves a network

form of color code used in wiring

transmission line in radio antennas

networking cable used for serial communication

Latvian Microwave Data transmission equipment company

Networking

cellular phone surveillance device

precision clock that provides timing signals to synchronise slave clocks as part of a clock network

A CSU/DSU (channel service unit/data service unit) is a digital-interface device used to connect data terminal equipment (DTE), such as a router, to a digital circuit, such as a Digital Signal 1 (DS1) T1 line. The CSU/DSU implements two different functions. The channel service unit (CSU) is responsible for the connection to the telecommunication network, while the data service unit (DSU) is responsible for managing the interface with the DTE. A CSU/DSU can have an external connection point or it can be integrated into a modular card installed in a router.

electromechanical multi-pole switch controled by a chain of pulses

switch that operates when sound over a certain threshold is detected

thumb|3D printed lens holder of KORUZA Scientific variant

optical network component

series of specifications by the PCI Industrial Computer Manufacturers Group

line, conductor, or other conduit by which information is transmitted

torture device

device used in the transmission of satellite signals

term used in telecommunication