[time-nuts] WWVB anomoly yesterday?

John R. Ackermann N8UR jra at febo.com
Tue Oct 26 09:46:19 EDT 2004

I'm about 1100 miles out, and I do get destructive interference 
sometimes for a few minutes around sunrise.  But this lasted for over 12 
hours and the "lock" indicators were still on when it was happening. 
I've never seen anything like this before.

When I have some time later today I'll figure out what the delay would 
be on a one-hop path versus the groundwave path, though I suspect the 
difference isn't as great as I'm seeing.


Poul-Henning Kamp wrote:
> In message <417E515F.9000603 at febo.com>, "John R. Ackermann N8UR" writes:
>>Anyone out there monitoring WWVB?  I noticed a strange anomaly that 
>>started at about 1730UTC on Monday and resolved at around 0730UTC today 
>>(Tuesday).  My ntp offset went from their normal levels (a nominal 
>>offset of about 2ms) to about -17 to -22ms with a lot of jitter, all 
>>showing as downward noise (increased negative offset) from the baseline.
> How far are you from colorado ?  If you are more than a few hundred
> miles it could be the skywave hitting you you loud enough to squelch
> the groundwave signal ?

More information about the time-nuts mailing list