Denver is about 50 to 60 miles from WWV and there are lots of hills between 
here and Fort Collins where the antennas are.  During the day, you would 
normally think that their 2.5 signal would be booming into Denver but most 
days, from noon to about 3 PM local, I can't copy them strong enough to hear 
the voice announcement.  I can here the carrier, of course, but some days I 
just can bearly hear them on 2.5 MHz.  The 5.0 frequency is fair during the 
afternoon but some nights is 40 over and a few times this winter, I copied 
the actual female voice of WWVH in Hawaii on 5.0 as it transmits on the same 
frequency.  She makes the announcement before the voice out of the Fort 
Collins stations begins to talk and I have copied her over the WWV carrier 
often over the years.  The same is true on 10.0 and 15.0 MHz.  I copied the 
carrier and her the voice in the noise on 20.0 and 25.0 but the one I copy 
the best, being so close, is the 5.0 MHz as I said.  In 1992 with my 2 
element 40 meter beam at 70 feet, some mornings I copied WWVH on 5.0 at 40 
over S9.  In other times, I have copied, how be it a handful of time, WWVH 
on the 2.5 MHz frequency, too, but that has been pretty rare.  As I recall, 
most of those times were back in the mid to late seventies.  I sure miss 
hearing the time and condition levels given in CW like it was back then, 
too.  I've never been able to copy the atomic clock signals down there in 
the 50 to 60 to 70 Hz range but of course I'm not using any kind of super 
long wire, say 500 miles long, at that low frequency range, haha.

Phil.
K0NX