I was monitoring WWVB against a good local standard and evaluating 60kHz
'seeing' 30 years ago. Sometimes it is beautifully quiet, after a storm
front went through as I remember, at other times it's absolute hash... to
the point that the HP 117A would not even hold lock.
-John
=
The randomness of WWVB propagation require incredibly long measurements
to get an interesting degree of accuracy compared to a GPS driven
solution.
The WWVB signal does respond nicely to solar flares if measurements are
integrated
over one minute. Check out the VLF monitoring stuff on my web page.
On 02/21/2014 12:06 PM, John Seamons wrote:
As a starting point: Here's an extension of the SAQrx PC sound card
receiver that supports 192 KHz sample-rate sound cards. Enough to get
you WWVB.
https://sites.google.com/site/swljo30tb
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--
Chuck Forsberg WA7KGX c...@omen.com www.omen.com
Developer of Industrial ZMODEM(Tm) for Embedded Applications
Omen Technology Inc The High Reliability Software
10255 NW Old Cornelius Pass Portland OR 97231 503-614-0430
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