WWVB
WWVB is a time signal radio station near Fort Collins, Colorado and is operated by the National Institute of Standards and Technology (NIST). Most radio-controlled clocks in North America use WWVB's transmissions to set the correct time. The 70 kW ERP signal transmitted from WWVB is a continuous 60 kHz carrier wave, the frequency of which is derived from a set of atomic clocks located at the transmitter site, yielding a frequency uncertainty of less than 1 part in 1012. A one-bit-per-second time code, which is based on the IRIG "H" time code format and derived from the same set of atomic clocks, is then modulated onto the carrier wave using pulse width modulation and amplitude-shift keying. A single complete frame of time code begins at the start of each minute, lasts one minute, and conve
WWVB
WWVB is a time signal radio station near Fort Collins, Colorado and is operated by the National Institute of Standards and Technology (NIST). Most radio-controlled clocks in North America use WWVB's transmissions to set the correct time. The 70 kW ERP signal transmitted from WWVB is a continuous 60 kHz carrier wave, the frequency of which is derived from a set of atomic clocks located at the transmitter site, yielding a frequency uncertainty of less than 1 part in 1012. A one-bit-per-second time code, which is based on the IRIG "H" time code format and derived from the same set of atomic clocks, is then modulated onto the carrier wave using pulse width modulation and amplitude-shift keying. A single complete frame of time code begins at the start of each minute, lasts one minute, and conve
has abstract
WWVB is a time signal radio st ...... B receiver at over 50 million.
@en
WWVB是由美國國家標準技術研究所所擁有的時碼發播台,位於美 ...... 計超過50萬部時鐘及手錶配備了接收WWVB的對時訊號的能力。
@zh
broadcast area
owning company
thumbnail
Link from a Wikipage to an external page
Wikipage page ID
Wikipage revision ID
744.363.337
country
launch date
network logo
network name
NIST Time & Frequency Service
subject
hypernym
point
40.67805555555555 -105.04694444444445
type
comment
WWVB is a time signal radio st ...... e, lasts one minute, and conve
@en
WWVB是由美國國家標準技術研究所所擁有的時碼發播台,位於美 ...... 計超過50萬部時鐘及手錶配備了接收WWVB的對時訊號的能力。
@zh
label
WWVB
@en
WWVB
@zh
lat
4,067805555555555e+1
long
-1,0504694444444445e+2