Time Signals
From Signal Identification Wiki
Click the name of a signal to see more detailed information, possible decoding, and additional sound and waterfall samples
| 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 |
|---|---|---|---|---|---|---|---|---|
| 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 | 1 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz). | China |  |
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| 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 |  |
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| Beta | Beta is the designation of a time signal service which is transmitted from multiple Russian VLFVery Low Frequency (3-30 kHz) stations. | 20.5 kHzKiloHertz (kHz) 10^3 Hz — 25.5 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) | CWContinuous Wave, OOKOn-Off Keying Modulation | 200 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz). | Russia, Belarus, Kyrgyzstan, Worldwide |  |
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| 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 |  |
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| Chilean Naval Time Signal | Naval VHFVery High Frequency (30-300 MHz) time signal found in Chilean Coast, in Vina Del Mar | 148.125 MHzMegaHertz (MHz) 10^6 Hz | NFMNarrowband Frequency Modulation | FMFrequency Modulation | 12.5 kHzKiloHertz (kHz) 10^3 Hz | Chile |  |
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| 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 its 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 |  |
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| Global Positioning System (GPS) | GPS is the USA's global navigation satellite system which provides precision position, navigation, and timing services to devices around the globe. | 1,176.45 MHzMegaHertz (MHz) 10^6 Hz — 1,575.42 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) | BPSKBinary Phase-Shift Keying (1 bit per symbol), QAMQuadrature Amplitude Modulation, DSSS, BOC, TMBOC | 22 MHzMegaHertz (MHz) 10^6 Hz — 25 MHzMegaHertz (MHz) 10^6 Hz | Worldwide |  |
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| 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 | 1 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz). | Japan |  |
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| MSF | MSF is a time signal station in Anthorn, United Kingdom, which broadcasts the UK national time reference | 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) | OOKOn-Off Keying Modulation | 5 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz). | United Kingdom, Europe |  |
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| 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 | 20 kHzKiloHertz (kHz) 10^3 Hz | Worldwide |  |
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| 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 |  |
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| RWM | RWM is a Russian shortwave time signal station. | 4.996 MHzMegaHertz (MHz) 10^6 Hz — 14.996 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) | OOKOn-Off Keying Modulation | 5 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz). | Russia |  |
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| TDF | TDF, also known as ALS162, is a time signal transmitted on the former 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 | 1 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz). | France |  |
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| 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 | SSBSingle-sideband modulation | AMAmplitude Modulation, PSKPhase-Shift Keying | 85 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz). | United Kingdom |  |
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| 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 | 4 kHzKiloHertz (kHz) 10^3 Hz | United States |  |
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| WWVB | WWVB is the lowest frequency time signal in the USA. | 60 kHzKiloHertz (kHz) 10^3 Hz | CWContinuous Wave | AMAmplitude Modulation | 1 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz). | United States |  |
Pages in category "Time"
The following 16 pages are in this category, out of 16 total.
