То сега сверяване на часовник може да се прави от сто места - едно време не беше така.
инак аз говоря за сверяване по следния начин -
1- европа - мисля че немците не са го ковали за цяла европа ама тва е друг въпрос -иначе кара много надалеч -има картинка с зоната на приемане... колко е вярна е друг въпрос.
DCF77
DCF77 is a German longwave time signal and standard-frequency radio station. It started service as a standard-frequency station on 1 January 1959. In June 1973 date and time information was added. Its primary and backup transmitter are located at 50°0′56″N 9°00′39″E in Mainflingen, about 25 km south-east of Frankfurt am Main, Germany. The transmitter generates a nominal power of 50 kW, of which about 30 to 35 kW can be radiated via a T-antenna.
е тука е цялото вики - https://en.wikipedia.org/wiki/DCF77
2- тука в америка кулата е в Колрадо -аз в Мичиган имах китаиски часовник дето се сверяваше от Колорадо и бачка без грижа -ето и викито
https://en.wikipedia.org/wiki/WWVB
WWVB is a time signal radio station near Fort Collins, Colorado and is operated by the National Institute of Standards and Technology (NIST).[1] Most radio-controlled clocks in North America[2] 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 conveys the year, day of year, hour, minute, and other information as of the beginning of the minute.
|
и хващайте секачките и поялника.