Time Signals

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Click the name of a signal to see more detailed information, possible decoding, and additional sound and waterfall samples

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Inactive
(No longer in use)
Active
(Currently in active use)
Status
Unknown or Intermittent
Signal Name Description Frequency Mode Modulation Bandwidth Location Sample Audio Waterfall image
Amplitude Modulation Signalling System (AMSS) Amplitude Modulation Signalling System (AMSS) is a DRM-based radiotext and data technology for AMAmplitude Modulation broadcasting, like RDS that is used for FMFrequency Modulation. It transmits as a subcarrier, phase-modulating the carrier frequency. 100 kHzKiloHertz (kHz) 10^3 Hz — 30 MHzMegaHertz (MHz) 10^6 Hz SSB AMAmplitude Modulation (PSKPhase-Shift Keying) 200 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz). AMSS.jpg
BPC BPC is the callsign of the Chinese low-frequency time broadcasting station, located near Shangqiu, Henan in China. 68.5 kHzKiloHertz (kHz) 10^3 Hz USBUpper Side Band Modulation (Radio, referring to reception and modulation mode)Universal Serial Bus (Computer, referring to USB Ports and cables) AMAmplitude Modulation HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz). China BPC.jpg
BPM BPM is a time signal transmitted by the Chinese Academy of Sciences, broadcasting from CAS's National Time Service Center in Pucheng County, China. 2.5 MHzMegaHertz (MHz) 10^6 Hz — 15 MHzMegaHertz (MHz) 10^6 Hz AMAmplitude Modulation AMAmplitude Modulation 3.5 kHzKiloHertz (kHz) 10^3 Hz China BPM.jpg
CHU CHU is a time signal radio station operated by the Institute for National Measurement Standards of the National Research Council of Canada. 3.33 MHzMegaHertz (MHz) 10^6 Hz — 14.67 MHzMegaHertz (MHz) 10^6 Hz USBUpper Side Band Modulation (Radio, referring to reception and modulation mode)Universal Serial Bus (Computer, referring to USB Ports and cables) FSKFrequency-Shift Keying, OOKOn-Off Keying Modulation 2.25 kHzKiloHertz (kHz) 10^3 Hz Canada CHU.jpg
DCF77 DCF77 is a German longwave time signal radio station based at 77.5 kHzKiloHertz (kHz) 10^3 Hz. DCF uses an AMAmplitude Modulation modulated carrier and phase modulation sidebands to transmit it's time signal. 77.5 kHzKiloHertz (kHz) 10^3 Hz USBUpper Side Band Modulation (Radio, referring to reception and modulation mode)Universal Serial Bus (Computer, referring to USB Ports and cables) AMAmplitude Modulation, PSKPhase-Shift Keying 1.3 kHzKiloHertz (kHz) 10^3 Hz Germany DCF77.jpg
JJY JJY, also known as JJY-40 and JJY-60, is the call sign for a pair of longwave Time Signal stations in Japan. 40 kHzKiloHertz (kHz) 10^3 Hz — 60 kHzKiloHertz (kHz) 10^3 Hz USBUpper Side Band Modulation (Radio, referring to reception and modulation mode)Universal Serial Bus (Computer, referring to USB Ports and cables) AMAmplitude Modulation HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz). Japan JJY.png
Primex Wireless Time Sync Primex Wireless Time Sync is a VHFVery High Frequency (30-300 MHz) Time Synchronization signal used in Primex Wireless's XR Series. 72.02 MHzMegaHertz (MHz) 10^6 Hz — 72.98 MHzMegaHertz (MHz) 10^6 Hz NFMNarrowband Frequency Modulation PSKPhase-Shift Keying kHzKiloHertz (kHz) 10^3 Hz Worldwide A112.jpg
RBU RBU is a time code radio station located in Moscow. It transmits a continuous 10 kW time code on 66.66 kHzKiloHertz (kHz) 10^3 Hz. 66.66 kHzKiloHertz (kHz) 10^3 Hz USBUpper Side Band Modulation (Radio, referring to reception and modulation mode)Universal Serial Bus (Computer, referring to USB Ports and cables) FSKFrequency-Shift Keying 650 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz). Russia RBU .jpg
RWM RWM is a Russian shortwave time signal station. 4.996 MHzMegaHertz (MHz) 10^6 Hz — 14.996 MHzMegaHertz (MHz) 10^6 Hz CWContinuous Wave OOKOn-Off Keying Modulation HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz). Russia RWM.png
TDF TDF is a time signal transmitted on the carrier of France's France Inter longwave AMAmplitude Modulation radio station on 162 kHzKiloHertz (kHz) 10^3 Hz. 162 kHzKiloHertz (kHz) 10^3 Hz USBUpper Side Band Modulation (Radio, referring to reception and modulation mode)Universal Serial Bus (Computer, referring to USB Ports and cables) PSKPhase-Shift Keying HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz). France TDF.jpg
UK AM Data System (UK-AMDS) UK AMAmplitude Modulation Data System (UK-AMDS) was developed by BBC Research and Development in 1984 as a way to transmit low bitrate data on BBC Radio 4's LFLow Frequency (30-300 kHz) AMAmplitude Modulation carrier. Elements of this system were adopted into ETSIEuropean Telecommunications Standards Institute. An independent, not-for-profit, standardization organization in the telecommunications industry in Europe, developing global telecommunications standards.'s AMSS. 198 kHzKiloHertz (kHz) 10^3 Hz SSB AMAmplitude Modulation (PSKPhase-Shift Keying) 85 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz). United Kingdom BBC teleswitch 2.png
UTC (Coordinated Universal Time) Time Standard UTC (Coordinated Universal Time) time standard transmission from NIST (National Institute of Standards and Technology) stations WWV in Fort Collins, Colorado USA and WWVH in Kauai, Hawaii. 2.5 MHzMegaHertz (MHz) 10^6 Hz — 25 MHzMegaHertz (MHz) 10^6 Hz AMAmplitude Modulation kHzKiloHertz (kHz) 10^3 Hz United States UTC Image.jpg

Pages in category "Time"

The following 12 pages are in this category, out of 12 total.