Standard frequency and time signal service (short: SFTS) is, according to Article 1.53 of the International Telecommunication Union's (ITU) Radio Regulations...

stations is derived from an atomic clock and can be therefore used as frequency standard. Rubidium standard Standard frequency and time signal service...

Clock network Speaking clock Standard frequency and time signal service Time from NPL Time and frequency transfer Time synchronization in North America...

radiocommunication services and the utilisation of radio frequencies. It is the supplementation to the ITU Constitution and Convention and in line with the...

System (RDS) Clock signal Extended Data Services and PBS Global Positioning System § Timekeeping Greenwich Time Signal Low frequency, (LF) Smart Personal...

A standard frequency and time signal service is a station that operates on or immediately adjacent to 2.5 MHz, 5 MHz, 10 MHz, 15 MHz, 20 MHz, and 25 MHz...

Dual-tone multi-frequency (DTMF) signaling is a telecommunication signaling system using the voice-frequency band over telephone lines between telephone...

Recommendation 374, Standard-Frequency and Time-Signal Emissions, and "UTC" became the official abbreviation of Coordinated Universal Time in 1967. In 1961...

satellite-based standard time and frequency broadcast service, which offers IST correct to ±10 microsecond and frequency calibration of up to ±10−10. Time and frequency...

time transfer accomplished by comparing time offsets of the received pulsar signal. Examples of time and frequency transfer techniques include: Simultaneous...

orthogonal frequency-division multiplexing (COFDM), forward error correction (convolutional coding) and time/frequency interleaving are applied to the signal being...

synchronization Clock signal Epoch (astronomy) Frequency standard Radio clock Time in astronomy Time signal Time metrology Time transfer Timekeeping on...

time reference. The time signal is derived from three atomic clocks installed at the transmitter site, and is based on time standards maintained by the...

intermediate frequency is created by mixing the carrier signal with a local oscillator signal in a process called heterodyning, resulting in a signal at the...

Victoria, Australia on 4.5, 7.5 or 12 MHz. VNG is a standard frequency and time signal service of the Australian Telecommunications Commission. This...

as a distress signal in voice-procedure radio communications. It is used to signal a life-threatening emergency primarily by aviators and mariners, but...

longwave time signal and standard-frequency radio station and is used for the dissemination of the Metropolitan French national legal time to the public...

The utility frequency, (power) line frequency (American English) or mains frequency (British English) is the nominal frequency of the oscillations of alternating...

its frequency with a modulator. The (instantaneous) frequency of an oscillator is altered in accordance with the amplitude of a modulating signal. FM...

or frequency mixer, is an electrical circuit that creates new frequencies from two signals applied to it. In its most common application, two signals are...

frequency of the transmitted signal is changed over time. Since the signal takes a finite time to travel to and from the target, the received signal is...

single-frequency network or SFN is a broadcast network where several transmitters simultaneously send the same signal over the same frequency channel...

unoccupied time slot or frequency band may be occupied by a signal inserted at the drop-and-insert point. Signals not of interest at the drop-and-insert point...

the L1 frequency as a 1.023 MHz signal using a bi-phase shift keying (BPSK) modulation technique. The P(Y)-code is transmitted on both the L1 and L2 frequencies...

Hong Kong, South Korean and the Philippines’ busy signal Listen to a busy signal from North America, Hong Kong, South Korea and the Philippines. Example...

single-frequency signaling (SF or SF tone) is line signaling in which dial pulses or supervisory signals are conveyed by a single-frequency tone in each...

reflection at higher frequencies. In signal processing the critical frequency it is also another name for the Nyquist frequency. Critical frequency is the highest...

given for the downlink frequency, the uplink is by standard 10 MHz lower in frequency than the downlink frequency. In UMTS for 3G and 4G mobile telephone...

with an LF receiver for these signals. Since these frequencies propagate by ground wave only, the precision of time signals is not affected by varying propagation...

Frequency modulation (FM) is a signal modulation technique used in electronic communication, originally for transmitting messages with a radio wave. In...