[time-nuts] WWVB BPSK Receiver Project?

paul swed paulswedb at gmail.com
Thu Mar 15 01:22:51 UTC 2012


OK thats great a maybe pic chip answer. They do cure all ill's after all.
Really scratching my head here. But I do think there is an answer as long
as the phase reversal is accurately controlled and still referenced to the
reference standard.
A I say I need to read.
Regards
Paul

On Wed, Mar 14, 2012 at 9:14 PM, WB6BNQ <wb6bnq at cox.net> wrote:

> Brooke,
>
> In speaking with John Lowe of NIST (Group Leader for Time & Frequency
> service), he stated that the absolute time recovery of
> their intended new modulation scheme is 10 milliseconds.  Nothing stellar
> there !
>
> BUT you are right, all of us that have hp-117 type receivers are just out
> of luck.  John Lowe did say they are going to
> produce a PIC (Microchip) project that will grab the data stream and
> reconstruct the carrier signal so that can then be fed
> back into a hp-117 type receiver so it can still be used.  However, he did
> say that is a dream at the moment as they have
> not really started to work on it.  He then said I could do it and they
> would consider my efforts.  While I had a number of
> thoughts running though mind when he said that; I did hold my comments
> back.
>
> I have to tell you, John Lowe sounded like he was drinking the Kool-Aid
> because I told him I was quite negative to the whole
> idea and he went into a nonstop mode of telling me all the good things
> that were going to come about with this modulation
> scheme.  The same kind of hype that occurred with the HDTV.  By the way,
> all those good things have nothing to do with
> anything Time-nutty except for pissing us off, as it were.
>
> His enthusiasm was aimed totally at new products.  Although he admitted it
> leaves all the real Timenut type people, actually
> using the system for its intended purpose, out in the cold, he really did
> not seem to care.  Pointing out that a failure
> with the GPS system left WWVB as the only alternate did not seem to matter
> either.
>
> OH Well,
>
> Bill....WB6BNQ
>
>
> Brooke Clarke wrote:
>
> > Hi John:
> >
> > They are going to maintain the existing AM modulation format so all the
> WWVB "Atomic Clocks" will still work.  The phase
> > modulation is added on top of that.
> >
> > Yes, I expect my HP 117 may no longer work, but I'd much rather have the
> improved s/n and timing accuracy.
> >
> > Have Fun,
> >
> > Brooke Clarke
> > http://www.PRC68.com
> > http://www.end2partygovernment.com/Brooke4Congress.html
> >
> > J. Forster wrote:
> > > All very nice, but if this change renders all existing receivers
> useless.
> > > How does that improve things?
> > >
> > > All it does is wipe out all the existing phase tracking infrastructure.
> > >
> > > The only benefit is to the government who can reuse the WWVB
> transmitter
> > > and frequency allocation. Everybody else will have to buy new stuff.
> > >
> > > Sounds a lot like HDTV fiasco. Making jobs (in China or Korea) by
> making
> > > scrap.
> > >
> > > YMMV,
> > >
> > > -John
> > >
> > > ==============
> > >
> > >
> > >> Dear Time-Nuts,
> > >>
> > >>
> > >>> I sure would like a WWVB BPSK receiver for the new modulation. (..)
> > >>>
> > >>> I'm sure in time there will be plenty of low cost ICs designed to
> > >>> receive the
> > > [SNIP}
> > >
> > >
> > > _______________________________________________
> > > 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.
> > >
> > >
> >
> > _______________________________________________
> > 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.
>
>
> _______________________________________________
> 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.
>



More information about the Time-nuts_lists.febo.com mailing list