Due to the extreme weather on Mount Washington, both WHOM and WPKQ use specially designed FM antennas which are housed in special cylindrical radomes, manufactured by Shively Labs of nearby Bridgton, Maine.

In 1987, WHOM and WMTW were joined on the peak of the mountain by WMOU-FM ( renamed WZPK and now WPKQ ) on a separate tower.

There are many types of electronic amplifiers, commonly used in radio and television transmitters and receivers, high-fidelity (" hi-fi ") stereo equipment, microcomputers and other electronic digital equipment, and guitar and other instrument amplifiers.

Some codes beginning with VE and VF are also in use to identify radio repeater transmitters.

Existing spacecraft are tracked by their interactions with the transmitters of the Deep Space Network ( DSN ), in effect an inverse GPS.

Once the transmission characteristics of a system are determined, telecommunication engineers design the transmitters and receivers needed for such systems.

LC oscillators are often used at radio frequencies, when a tunable frequency source is necessary, such as in signal generators, tunable radio transmitters and the local oscillators in radio receivers.

They are used to stabilize the frequency of most radio transmitters, and to generate the clock signal in computers and quartz clocks.

These double-balanced mixers are very widely used in microwave communication systems, satellite communication systems, and ultrahigh frequency ( UHF ) communications transmitters and receivers, and in radar systems transmitters and receivers.

There are many types of electronic amplifiers, commonly used in radio and television transmitters and receivers, high-fidelity (" hi-fi ") stereo equipment, microcomputers and other electronic digital equipment, and guitar and other instrument amplifiers.

Reports that pass through many reliable transmitters at each point in the isnad up until their collection and transcription are known as mutawātir.

These reports are considered the most authoritative as they pass through so many different routes that collusion between all of the transmitters becomes an impossibility.

No UK services are relayed via local AM transmitters.

There are further sub-relay transmitters across the island.

To reduce resistance due to skin effect, in high-power inductors such as those used in transmitters the windings are sometimes made of a metal strip or tubing which has a larger surface area, and the surface is silver-plated.

Bureaux de change and money transmitters, such as Western Union outlets, in the UK fall within the ' regulated sector ' and are required to comply with the Money Laundering Regulations 2007.

These are large reinforced buried concrete bunkers, equipped with armoured turrets containing high-precision optics that were connected with the other fortifications by field telephone and wireless transmitters ( known in French by the acronym T. S. F.

There are several stimuli that can activate a neuron leading to electrical activity, including pressure, stretch, chemical transmitters, and changes of the electric potential across the cell membrane.

Even though other transmitters are used in far fewer synapses, they may be very important functionally — the great majority of psychoactive drugs exert their effects by altering the actions of some neurotransmitter systems, often acting through transmitters other than glutamate or GABA.

However, there are several other neurotransmitters as well, jointly labeled Non-noradrenergic, non-cholinergic ( NANC ) transmitters.

There are about 15, 000 TV transmitters.

Some transmitters are capable of direct frequency-shift keying ( FSK ) as they can directly accept the digital signal and change their transmitting frequency according to the mark or space input state.

Although other forms such as closed-circuit television ( CCTV ) are in use, the most common usage of the medium is for broadcast television, which was modeled on the existing radio broadcasting systems developed in the 1920s, and uses high-powered radio-frequency transmitters to broadcast the television signal to individual TV receivers.

Modulation transformers in AM transmitters are very similar.

TDMA is a type of Time-division multiplexing, with the special point that instead of having one transmitter connected to one receiver, there are multiple transmitters.

The high power SSB transmitters were located at Rocky Point, New York and Rugby, England.

It is also common for BBC programmes to air on traditionally Voice of America or ORF transmitters, while their programming is relayed by a station physically located in the UK.

Through the usage of tracking devices such as radio transmitters, rats have been found to occupy dens located in trees, as well as on the ground.

Clandestine broadcasts may emanate from transmitters located in rebel-controlled territory or from outside the country entirely, using another country's transmission facilities.

In more powerful transmitters, the antenna may be located on top of a building or on a separate tower, and connected to the transmitter by a feed line, that is a transmission line.

Low power transmitters for some radio stations and transceivers for some mobile phone operators are located inside the tunnels.

In 1976, Venevisión moved their transmitters, which were located on the top of a building in La Colina, a neighborhood in Caracas where Venevisión's studios can be found, to Los Mecedores, near Venezolana de Televisión's studios and CANTV's installations.

Both transmitters and a large antenna ' farm ' are located just outside Greenville.

The OMEGA system consisted of eight transmitters located throughout the world.

In 1955 Radio Liberty began airing programs to Russia's eastern provinces from shortwave transmitters located on Taiwan, while in 1959 Radio Liberty commenced broadcasts from a base at Playa de Pals, Spain.

* Brinkley Act-Section 325 ( b ) of the Communications Act of 1934 that was written into law in an attempt to halt live broadcasting from radio studios in the United States linked via telephone land lines to superpower border blaster transmitters located along the Mexican side of the Rio Grande ( Rio Bravo ) international border.

Thus, besides the intended signal from within the cell, signals at the same frequencies ( co-channel signals ) arrive at the receiver from the undesired transmitters located ( far away ) in some other cells and lead to deterioration in receiver performance.

These stations have located their transmitters on Vashon and Maury Islands because soil conductivity, important to signal propagation in the AM broadcast frequency range, is greater than elsewhere around Puget Sound.

Since the recorders can sometimes be crushed into unreadable pieces, or even located in deep water, some modern units are self-ejecting ( taking advantage of kinetic energy at impact to separate themselves from the aircraft ) and also equipped with radio emergency locator transmitters and sonar underwater locator beacons to aid in their location.

Radio New Zealand Concert broadcasts in FM stereo via terrestrial transmitters located around New Zealand, as well as from the Optus satellite.

Radio New Zealand International broadcasts on shortwave and DRM to neighbouring countries in the Pacific from transmitters located at Rangitaiki, near Taupo, in the North Island.

Today, WGBH-TV's and WGBX-TV's transmitters are located at the CBS digital television facility in Needham, Massachusetts, where channel 44 first transmitted on September 25, 1967 ; channel 2 moved there on June 18, 1966.

Radio stations with transmitters located in or nearby to Goulburn include -

This station took advantage of HSN's already extensive network of low-power transmitters located in many major metropolitan markets throughout the United States.

The DAB transmitters planned for the multiplex that will serve the Gloucestershire audience are due to be located at Churchdown Hill ( for the Severn Vale, including the Cheltenham / Gloucester conurbation ) and Ridge Hill.

As the system was now intended to offer navigation over a much wider area, the transmitters of a single station would have to be located further apart to produce the required accuracy and coverage.

Consider two radio transmitters located at a distance of 300 km from each other, which means the radio signal from one will take 1 millisecond to reach the other.

The broadcast tower for the station is still located atop the skyscraper known as One Nationwide Plaza in Columbus, along with the transmitters for sister station WBWR.

The WSEN-AM / FM combo is licensed to the Syracuse suburb of Baldwinsville, where the stations ' transmitters are also located.