Radio station WWV
15000 kHz - 10 kW, sito trasmittente: Fort Collins CO -
Stazione radio facsimile JMH2
7795 kHz - 5kW, sito trasmittente: Kagoshima Broadcast
Station,
Japan - JMH2 on 7795 - 22/03/2023
Stazione radio facsimile VMC
20469 kHz - 1kW, sito trasmittente: Charleville, Qld -
Australia Weather East - Charleville ( VMC) -
Radio station WWVH
15000 kHz - 10kW, sito trasmittente: Island of Kauai,
Hawaii -U.S.A. National Institute of Standards and Technology
Radio station CHU
3330 kHz - 3kW, sito trasmittente: Ottawa ON -
CBV Valparaiso Playa Ancha Radio, Chile
17146.4 kHz - 1kW, sito trasmittente: Valparaiso Playa
Ancha - Chile
Centro de Telecomunicaciones Maritimas de Valparaiso
Radio station WWV
20000 kHz - 2.5kW, sito trasmittente: Fort Collins CO -
Stazione radio facsimile JFX
8658 kHz - 1kW, sito trasmittente: Kagoshima - Japan
Radio station CHU
14670 kHz - 3kW, sito trasmittente: Ottawa ON -
Radio station WWV
25000 kHz - 2.5kW, sito trasmittente: Fort Collins CO -
U.S.A. National Institute of Standards and Technology
WWV on 25000 kHz - 03/02/2023
VMW on 15615 kHz - 09/01/2023
Stazione radio facsimile VMW
15615 kHz - 1kW, sito trasmittente: Wiluna, WA -
Australia Weather West - Wiluna ( VMW) -
Stazione radio facsimile VMC
13920 kHz - 1kW, sito trasmittente: Charleville, Qld -
Australia Weather East - Charleville ( VMC) -
Stazione radio facsimile XSQ
16826,25 kHz - 5kW, sito trasmittente: GUANGZHOU
COAST RADIO STATION, CHINA Guangdong Meteorological
Observatory, South China Sea Weather Forecast Center -
Stazione radio facsimile JMH4
13988.5 kHz - 5kW, sito trasmittente: Kagoshima fishing
ASSOCIAZIONE AMICI di ITALCABLE
Segnale Orario SRC 10
E' attiva la stazione amatoriale e sperimentale della radio trasmittente sulla frequenza 10MHz Modulazione d'Ampiezza, 24 ore su 24 il segnale orario Italiano, Locator: JN53DV.
http://www.associazioneitalcable.it/
Ricezione del 30 maggio 2021 ore 11.30 UTC - ricevitore SDRplay RSPdx - antenna T2FD 14,5 m installata in configurazione inverted vee
Beta (Time signal)
Beta è un network di stazioni radio russe che trasmettono il segnale di tempo nella gamma di frequenze VLF. È operato dall istituto di metrologia per il tempo e lo spazio che ha sede a Mosca in Russia.
Il network Beta è costituito dai seguenti trasmettitori radio: RJH69 Trasmettitore VLF di Vileyka vicino a Molodečno (Bielorussia); RJH77 Arkhangelsk; RJH90 Nižnij Novgorod (Goliath transmitter); RJH66 Chaldovar (Kirghizistan); RJH63 Krasnodar(Russia); RAB99 KhabarovskSessione di ricezione stazioni di tempo e frequenza campione in VLF
RJH63, RJH66, RJH69, RJH77, RJH90, appartenenti alla Marina Militare Russa
Setup di ascolto: ricevitore SDR ELAD FDM-S1, antenna Falcon OUT-250B, elaborazione segnale con PskovNDB2.1
RBU (radio station)
RBU is a time code radio station located in Moscow (56°44′00″N 37°39′48″ECoordinates: 56°44′00″N 37°39′48″E).[1] It transmits a continuous 10 kW time code on 66⅔ kHz.[2] This is commonly written as 66.66[1] or 66.666 kHz,[3] but is actually 200/3 kHz = 66.6̅ kHz.[2] Until 2008, the transmitter site was near Kupavna 55°44′04″N 38°9′0″E and used as antenna three T-antennas spun between three 150 metres tall grounded masts. In 2008, it has been transferred to the Taldom transmitter at 56°44′00″N 37°39′48″E.[4]
RBU is controlled by All-Russian Scientific Research Institute for Physical-Engineering and Radiotechnical Metrology. It is operated by Russian Television and Radio Broadcasting Network.[5]
Radio Station WWV
NIST radio station WWV broadcasts time and frequency information 24 hours per day, 7 days per week to millions of listeners worldwide. WWV is located near Fort Collins, Colorado, about 100 kilometers north of Denver. The broadcast information includes time announcements, standard time intervals, standard frequencies, UT1 time corrections, a BCD time code, and geophysical alerts.Notice: Beginning April 19, 2019, Radio Stations WWV and WWVH will be announcing upcoming and current Military Auxiliary Radio System (MARS) and U.S. Department of Defense (DoD) exercises. Founded in 1925, MARS is an organization established by DoD that trains volunteer Amateur Radio operators to provide contingency high-frequency (HF) radio communications assistance in times of natural disasters and other urgent situations. MARS volunteers also assist DoD by providing humanitarian assistance and disaster relief, and morale and welfare communications. The MARS exercises will take place several times per year, on a regional and nationwide basis. The WWV and WWVH announcements will provide information to Amateur Radio participants regarding the purpose, dates, times and locations of the exercises and other information. WWV will air MARS announcements on the 10th minute of each hour, and WWVH will use the 50th minute. The announcements will air for about two weeks, prior to and during each exercise. For more information about MARS, see: http://www.usarmymars.org/home/history-of-mars and https://www.mars.af.mil/. MARS exercise participants are directed to www.dodmars.org.
Broadcast Frequencies
WWV operates in the high frequency (HF) portion of the radio spectrum. The station radiates 10 000 W on 5 MHz, 10 MHz, and 15 MHz; and 2500 W on 2.5 MHz and 20 MHz. Each frequency is broadcast from a separate transmitter. Although each frequency carries the same information, multiple frequencies are used because the quality of HF reception depends on many factors such as location, time of year, time of day, the frequency being used, and atmospheric and ionospheric propagation conditions. The variety of frequencies makes it likely that at least one frequency will be usable at all times.Antennas
The WWV antennas are half-wave vertical antennas that radiate omnidirectional patterns. There are antennas at the station site for each frequency. Each antenna is connected to a single transmitter using a rigid coaxial line, and the site is designed so that no two coaxial lines cross. Each antenna is mounted on a tower that is approximately one half-wavelength tall. The tallest tower, for 2.5 MHz, is about 60 m tall. The shortest tower, for 20 MHz, is about 7.5 m tall. The top half of each antenna is a quarter-wavelength radiating element. The bottom half of each antenna consists of nine quarter-wavelength wires that connect to the center of the tower and slope downwards to the ground at a 45 degree angle. This sloping skirt functions as the lower half of the radiating system and also guys the antenna.
Time Service Division - DSHO
The task of the Time Service Division (DSHO) of the National Observatory (ON) is to generate, to keep and to disseminate the Brazilian Legal Time (HLB) according to the Brazilian Laws and also to do Research & Development in Time and Frequency metrology area.
As a Designated Institute by the National Institute of Metrology, Quality and Technology (Inmetro), the DSHO is in charge of the standardization of the Brazilian National Time and Frequency (TF) Reference and also affords the activities of accreditation of laboratories by the Inmetro. So, the DSHO keeps the time and frequency standards assuring the brazilian metrological time and frequency traceability and establishes a permanent international comparison with the Bureau International des Poids et Mesures (BIPM).
The Legal Time (HLB) is also intercompared in real-time with others international time references by means of the Inter-American Metrology System (SIM) which is accessible by the internet link SIM Time Scale Comparisons via GPS Common-View.
National Physical Laboratory time signal
The National Physical Laboratory (NPL) has installed three atomic clocks at Anthorn and on 27 February 2007 Britain’s national time signal transmissions, retaining their original call sign of MSF, were transferred there on a trial basis, moving formally on 1 April 2007. The signals originally came from the transmitter located at Rugby, administered by BT. The data transmitted includes both time and date information and can be decoded using suitable software readily available.
Monitoring and logging of the clocks and control of the transmissions is by Internet link from the NPL offices at Teddington, using comparison with GPS signals at both locations. Signal monitoring is by radio. To ensure accuracy, dynamic adjustment of the aerial according to local conditions (such as wind distortion) is controlled from computers on site. The signals, transmitted at 60 kHz, also provide a national frequency standard. The effective radiated power is 17 kW.
DCF77
Stazione di tempo campione
Con la sigla DCF77 si definisce un sistema tedesco di trasmissione dell'ora legale e delle previsioni meteorologiche attraverso delle onde radio, verso un'ampia zona di copertura. È stato creato dal Physikalisch-Technische Bundesanstalt (PTB) su iniziativa del governo tedesco.La stazione radio
Le sue antenne sono situate a Mainflingen, nei pressi di Francoforte. Dispone di tre orologi atomici e distribuisce quindi l'ora assoluta con uno scarto minimo. Le due antenne sono sostenute da dei cavi orizzontali, sostenuti in posizione da diversi pilastri della lunghezza di circa 200 metri.Il segnale è emesso in onde lunghe, con frequenza della portante pari a 77,5 kHz, da un trasmettitore da 50 kW; la portata del segnale, con riflessione sulla ionosfera, è di circa 1900 km di giorno e 2100 km di notte: riesce quindi a coprire quasi tutta l'Unione europea ed alcuni paesi dell'Europa orientale.
L'informazione sul segnale è controllata da tre orologi atomici (uno al rubidio e due al cesio); la loro azione fa sì che la frequenza della portante abbia un margine di errore relativo di 2·10−12 in un giorno, e di 2·10−13 sulla media di un periodo di cento giorni.
Time and Frequency Station CHU (Canada)
This signal is broadcasted on three frequencies: 3 kW (3330, 14670 kHz) and 10 kW (7850 kHz). The transmitter is located just south of Ottawa, Canada. The signal follows a strict pattern of CW beeps, along with 9 seconds where a digital time code is transmitted in a 300 Bd FSK mode using the Bell 103 standard, a 2225 Hz tone to represent a mark (1 bit) and 2025 Hz tone for a space (0 bit).
ASSOCIAZIONE AMICI di ITALCABLE
Segnale Orario SRC 10
E' attiva la stazione amatoriale e sperimentale della radio trasmittente sulla frequenza 10MHz Modulazione d'Ampiezza, 24 ore su 24 il segnale orario Italiano, Locator: JN53DV.
AUDIO MP3
Segnale Orario S.IP 15
E' attiva la stazione amatoriale e sperimentale della radio trasmittente sulla frequenza 15MHz Modulazione d'Ampiezza, 24 ore su 24 il segnale orario Italiano, Locator: JN53DV.
STANDARD FREQUENCY AND TIME SIGNAL STATIONS
RWM, Moscow, Russia
Frequencies: 4996, 9996, 14996 kHz
Carrier accuracy: ∆f / f < 5 • 10-12 Call sign: RWM
Location: Moscow, 56° 44’ n, 37° 38’ e
Operating hours: Continuous
Power: 4996 kHz - 9996 kHz, 14996 kHz; 10 kW
Modulation: On-off keying (A1B)
Identification signal: Call sign in Morse in minutes 09 and 39
Programme: Schedule repeats every 30 minutes, see Table 13
Time code: None
signals A1N = 20m00s - 29m55s | and | 50m00s - 59m55s |
signals A1X = 10m00s - 19m55s | and | 40m00s - 49m55s |
| "rwm rwm rwm …" in Morse code (before 2004: “vvv cq cq cq de rwm rwm rwm”) | 09m00s - 09m55s | 39m00s - 40m55s |
| 08m00s - 09m00s | 38m00s - 39m00s | No transmission |
| 00m00s - 07m55s | 30m00s - 37m55s | Unmodulated carrier |
Table 13. RWM hourly transmission schedule
Figure 5. Coding of the deviation between astronomical time UT1 and atomic time
UTC. The difference in seconds is given by 0.1 x DUT1 + 0.02 x dUT1. In this
example, DUT1 is +4 and dUT1 is -3, hence UT1 - UTC = +0.34 seconds
tratto da:
Klaus Betke, Standard Frequency and Time Signal Stations On Longwave and Shortwave
aggiornato al 2007 con dati forniti dallIstituto
RWM Moscow_4996_30-10-17_1539
Ricezione segnali EFR Teleswitch
Articolo pubblicato su Radiorama n. 72, pag. 91
Radio Utility - Ricezione segnali EFR Teleswitch
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