[time-nuts] WWVB phase-modulation test

[paul swed]

I did want to add to my earlier comments that I have 3 radio clocks and all
worked during this time. So from the east coast it seems the modulation
does not effect radio clocks.
Regards
Paul
WB8TSL

On Sun, Apr 15, 2012 at 12:59 PM, Jim Hickstein <jxh at jxh.com> wrote:

> >psk fixer-uppers not working all that well. Back to the drawing boards as
> >they say.
>
> My Spectracom 8170 was showing lock but not time sync, for a while last
> night, several hours.  Longer than usual, when it's just getting a grip.
>  (I didn't set up to record its outputs, alas!)  At other times, and this
> morning, it's just unlocked.
>
> The 8164 has been unlocked throughout, as expected, and its strip-chart
> recorder shows the usual open-loop pattern.  When the test ends I should
> have a nice picture bracketing it.
>
> My MFJ-133 clock is happy enough, as predicted.  The Junghans Mega seems
> to be.  It's harder to tell with the others, that only have hands and no
> direct indication of receiver state.
>
> Interesting that the NIST's own monitoring stations (
> http://tf.nist.gov/tf-cgi/**wwvbmonitor_e.cgi<http://tf.nist.gov/tf-cgi/wwvbmonitor_e.cgi>)
> variously show readable time codes, and highly atypical plots of relative
> field strength.  I wonder how they're measuring those.  Again, LaCrosse is
> the big loser on readability, for some reason.
>
> I also finally hauled the spectrum analyzer (HP 141T/8552B/8553B) up from
> the basement, got together a DC block and a BNC tee, and tried to see what
> I could see.  Nothing.  60 kHz is mighty close to DC, on this thing.  Too
> close, evidently.  Perhaps I should be looking somewhere inside the 8164.
>
>
> ______________________________**_________________
> time-nuts mailing list -- time-nuts at febo.com
> To unsubscribe, go to https://www.febo.com/cgi-bin/**
> mailman/listinfo/time-nuts<https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts>
> and follow the instructions there.
>