[time-nuts] New WWVB format...
Bob Camp
lists at rtty.us
Wed Sep 26 16:54:29 UTC 2012
Hi
At least from here, that link appears to be broken. If it's the same details
as on the NIST web site, they are already part of a thread here.
Bob
-----Original Message-----
From: time-nuts-bounces at febo.com [mailto:time-nuts-bounces at febo.com] On
Behalf Of Burt I. Weiner
Sent: Wednesday, September 26, 2012 11:49 AM
To: time-nuts at febo.com
Subject: [time-nuts] New WWVB format...
I'm sure most of this group has seen the information put out by NIST
regarding the changes to the WWVB format. But, for those who may not
yet have seen this, here's a link to it:
http://f1.grp.yahoofs.com/v1/cBhjUH41xVccWM9P8EU4JqzmFNevFgDUFkRcgfLyry1Rn3H
qMV5iDqYDgsd2pM1-Vq3nhF9WERTjVF_WmRjAezjU9CCrAda_8RqV/NIST-Enhanced-WWVB-Bro
adcast-Format.pdf
The results of this change will apparently no longer allow WWVB to be
used as a high accuracy frequency standard signal. This does not
seem to be much of an issue considering the availability of the GPS
signals all over the world.
I use GPS as my frequency reference for my "Off-Air" broadcast
frequency measurement service. Some broadcast stations also use GPS
as a reference for their transmitters. I'm sometimes asked why I use
GPS as a reference when it is not recognized by NIST as the U.S.
Frequency Standard? Other than explaining the capabilities of GPS as
a reference, I don't have a real answer for their specific
question. I have publications from NIST showing the accuracies
obtainable using GPS, but it still does not appear to be an
"Official" U.S. Frequency Standard. So, I guess my question is, when
will NIST officially recognize GPS as, at least an alternate, U.S.
Frequency Standard? Have I missed something?
Thanks,
Burt, K6OQK
Burt I. Weiner Associates
Broadcast Technical Services
Glendale, California U.S.A.
biwa at att.net
www.biwa.cc
K6OQK
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