Howard Winter wrote: > That rather depends where you are in relation to the tramsmitter - > I'm about a hundred miles from the MSF 60kHz transmitter in Rugby > (Midlands of England) and I have several clocks that receive it > reliably, and believe me, my house has *lots* of electrical > interference in it! :-) And as I understand it low frequency signals > normally travel by Ground Wave, so shouldn't be affected by diurnal > variations. This isn't a problem when you're on the same small island as the transmitter. 100 miles is quite close. I'm about 2000 miles from WWVB in Boulder Colorado. Around here clocks only synchronize at night. ***************************************************************** Embed Inc, embedded system specialists in Littleton Massachusetts (978) 742-9014, http://www.embedinc.com -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist