The so-called "atomic clocks" use the 60 KHZ signal from WWVB at the NBS transmitter site north of Fort Collins, CO.
The signal level from the station got a bit of a boost awhile back when the PA from the decommissioned 100 KHZ LORAN C transmitter in ND(?) was moved to Ft. Collins and retrofitted into the 60 KHZ transmitter. The 20 KHZ WWVL rig is/was a beauty ... HB by NBS and painted bright blue ... with a brush. Both VLF antennas are of such High-Q that a thunderstorm overhead will detune them enough to throw the TX's into overload and shutdown protection. 73! Ken - K0PP ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
