| Information |
WWV |
WWVH |
WWVB |
| Data Service Began |
March 1923 |
November 1948 |
July 1956 |
| Geographical Coordinates |
Denver, Colorado |
Honolulu, Hawaii |
Denver, Colorado |
| 40° 40' North, 105° 02' West |
21° 59' North, 159° 46' West |
40° 40' North, 105° 02' West |
| Standard Carrier Frequencies |
2,5 und 20 MHz |
5, 10 und 15 MHz |
2,5 MHz |
5, 10 und 15 MHz |
60 kHz |
| Power |
2,5 kW |
10 kW |
5 kW |
10 kW |
23 kW planed 1998: 45 kW |
| Standard Audio Frequencies |
440, 500 and 600 Hz |
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| Time Intervals |
1 pulse/sec; minute mark; hour mark |
sec.; min. |
| Time Signals: Voice |
Once per minute |
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| Time Signal: Code |
BCD code on 100 Hz subcarrier, 1 Puls/sec. |
BCD code |
| UT1 Corrections |
UT1 corrections are broadcast with a accuracy of ±0.1 s |
| Special Announcements |
Omega Reports, Geoalerts, Marine Storm Warnings, Global Positioning System Status Reports |
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