[time-nuts] True to there word.

[Bob Camp]

Hi

I suppose you could pull down weather data off of the internet. It might be easier than it sounds. My guess is that it's actually more difficult than it sounds....

Bob


On Feb 8, 2010, at 10:44 PM, WarrenS wrote:

> 
> Concerning WWVB from someone that used it way back to check my reference for a few years before I had GPS.
> 
> Short conclusion, with what I was doing and the equipment I had (a WWVB receiver Tracor 599),
> Its Ok to about 1 part in 1e9  for most of the day and with luck and care on a good day, to a few parts in e10.
> 
> It was pretty useless at night, hard to keep track of what cycle it was on, too much jumping around and time shift drift.
> It was completely useless at the diurnal shift, It went to zero for a few minutes,
> lost sync and then came back with a new random sync on the 60 KHz phase and the 100KHz reference Freq.
> During the winter season it made a better weather station than a Freq standard,
> with the day time fluxuations being more a function of the weather between Calif and Colorado than of my Osc.
> It was OK in the summer, but I could still use it to predict bad weather in-between me and the transmitter.
> 
> Don't think you would NEVER ever want to lock on to it for a WWVB-DO, It is just used to watch for phase drift during the lucky part of the day.
> 
> Oh, I don't miss them good ol days.
> 
> ws
> 
> **************************
>> Hi
> 
>> My assumption is that that the same propagation effects that move the phase also delay the arrival of the modulation. The ID on WWVB is a 45 degree (?) >carrier phase shift. At the very least, I think you would need to let the loop know about that.
> 
>> I do hardware one week and software the next. Right now I'm writing a bunch of Perl ....
> 
>> Bob
> 
> *****************
> On Feb 8, 2010, at 8:51 PM, Bob Paddock wrote:
> 
>> On Mon, Feb 8, 2010 at 8:40 PM, Bob Camp <lists at cq.nu> wrote:
>> 
>>> I assume that you are going to have to train your loop to "expect" the ID shifts and time
>>> markers. Again, they are predictable.
>> 
>> Would it not be easier to use the WWVB Zero-Crossings to sync something?
>> Then the power shifts should not mater.
>> 
>>> It's just software ....
>> 
>> You must be a hardware person... :-)
>> 
> 
> 
> ****************
>> Yes, but WWVB is a PITA to use (because of the diurnal shifts) compared to
>> LORAN.
>> 
>> -John
>> 
>> ===============
>> 
>>> Hi
>>> 
>>> WWVB is pretty safe. When they do a cost/benefit thing on these services,
>>> they take a look at how many taxpayers are using the service as intended.
>>> The "mission" of WWWVB is to put out time signals. There are a *lot* of
>>> taxpayers with WWVB "atomic clocks" on their walls.
>>> 
>>> Bob
>>> 
>>> -----Original Message-----
>>> Subject: [time-nuts] True to there word.
>>> 
>>> The lights went out (actually red) on my Austron 2100 r this morning.
>>> (whats  next WWVB ?)
>>> Don H
> 
> 
> _______________________________________________
> time-nuts mailing list -- time-nuts at febo.com
> To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
> and follow the instructions there.
>