YES NOPE9 wrote: >> On Aug 15, 2010, at 5:58 AM, Olin Lathrop wrote: >> >> Sean Breheny wrote: >> =20 >>> In Lexington, MA I also find that CHU is stronger than WWV, although >>> on 5MHz I can usually get both WWV and WWVH (Hawaii - albeit faintly >>> in the background). >>> =20 >> Here in Littleton (three towns north, 2000 miles from Boulder) the =20 >> WWVB >> clocks only pick up the signal at night. I don't know how good the >> receivers in these clocks are, but of the three I know of around =20 >> here none >> of them gets the signal during the day and all of them get it reliably >> overnight. According to the NIST WWVB coverage map, we're right on =20 >> the >> edge. >> >> >> =20 > What kind of antennas are being used ? > Gus > =20 The antennas are ferrite-loop design, similar to those used on AM=20 radios, but at a very low frequency, so the amount of wire used is great and the ferrite TYPE is different. BTW, I drove around the neighborhood and I believe I've discovered the=20 reason(s) it probably won't work: 600 meters away was a cellular phone tower. 1000 meters away was the county police-band radio antennas, on 4 500'=20 steel towers. These are VERY powerful radiators. --Bob A --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .