[NLRS] Link -- New phase-modulation WWVB signal

[Duane - N9DG]

According to the NIST website they have be transmitting this way since Oct 29, 2012. And they have been including two 30 minute periods per day where the PM modulation was turned off. Those 1/2 hour periods are due to end on March 21.

http://www.nist.gov/pml/div688/grp40/wwvb.cfm

Duane
N9DG



--- On Wed, 3/13/13, Chris Elmquist <chrise at pobox.com> wrote:

From: Chris Elmquist <chrise at pobox.com>
Subject: Re: [NLRS] Link -- New phase-modulation WWVB signal
To: w0zq at aol.com
Cc: nlrs at mailman.qth.net
Date: Wednesday, March 13, 2013, 8:05 AM



On Wednesday (03/13/2013 at 08:55AM -0400), w0zq at aol.com wrote:
> 
> 
> 
> Ditto .... my kitchen clock is an "Atomic" clock and it has failed to connect for the first time in several/many years.

WWVB signal levels are much lower here in MN lately.  I have a receiver
with active probe antenna up on the tower that I monitor it with and it's
typically S5 to S7 on this receiver but in the past month it hasn't even
been moving the meter (at least when I've been looking at it).

I have three WWVB clocks and two of them made the DST changeover correctly
last Sunday but one did not (and still has not).

I think signal level, ambient noise and quality of receiver design all
conspire together to decide our fate here.

Chris N0JCF


> -----Original Message-----
> From: tosca005 <tosca005 at umn.edu>
> To: Donn, WA2VOI <wa2voi at mninter.net>
> Cc: nlrs <nlrs at mailman.qth.net>; geraldj <geraldj at netins.net>
> Sent: Tue, Mar 12, 2013 9:30 pm
> Subject: Re: [NLRS] Link -- New phase-modulation WWVB signal
> 
> 
> Did they start testing this new modulation method already?
> Maybe it's just coincidence, but my wristwatch with a WWVB receiver has 
> ailed to connect to their transmitter since 03/07/13 after 5-7 years of 
> egular operation. Naturally, they say that the new modulation will not 
> mpair the function of existing equipment, but how certain is that?
> Or maybe it's just time to buy a new watch.
> W0JT/5