[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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