[time-nuts] Lots of Off Topic discussion

Don dlewis6767 at austin.rr.com
Sat Sep 1 19:02:49 EDT 2018


Try receiving wwv or wwvb with your HP3586 SLV and determine precisely
where f(o) is.
It's difficult, ...as propagation and atmospheric conditions will
unwittingly prevail.
This ham prefers my gpsdo's, or my cesium.
Don
N5CID
=================================================================
On Sat, 2018-09-01 at 17:04 -0400, William H. Fite wrote:
> With respect, Scott, EVERY ham knows about WWV.
> 
> 
> On Saturday, September 1, 2018, Scott McGrath <scmcgrath at gmail.com>
> wrote:
> 
> > 
> > I’m concerned with the science
> > 
> > the WWV/WWVB stations provide invaluable information about the
> > condition
> > of the ionosphere with a baseline of DECADES of data.
> > 
> > Also dont forget that pre PSK the NTP daemon in unix had a
> > interface for
> > Spectracom WWVB receivers and any retrofitted with a D-PSK’er still
> > provide
> > network time within all national banking regulations.
> > 
> > As to GPS Jamming well I think its essential that sophisticated GPS
> > users
> > like this community educate decision makers in their sphere of
> > influence
> > just how FRAGILE a system GPS is.    I realize some dont want to
> > hear this
> > but its essential that we as a technological society create backup
> > systems
> > using different techology bases to deliver precise time and
> > frequency in an
> > economical fashion because not everyone can afford a couple of
> > 5071’s.
> > 
> > As to only ‘hams’ using them I dont think many hams unless they are
> > running vintage Collins gear with a WWV position on the bandswitch
> > to align
> > the PTO,  even know about WWV.
> > 
> > Most of the WWV users  I know personally are atmospheric
> > scientists,
> > military and other government users.
> > 
> > 
> > 
> > Content by Scott
> > Typos by Siri
> > 
> > On Sep 1, 2018, at 2:37 PM, Brian Lloyd <brian at lloyd.aero> wrote:
> > 
> > On Sat, Sep 1, 2018 at 9:13 AM, David G. McGaw <
> > david.g.mcgaw at dartmouth.edu>
> > wrote:
> > 
> > > 
> > > I consider saving WWV/WWVH/WWVB to be ON topic.  They may not be
> > > as
> > > precise as some on this list like to achieve, but they are
> > > publicly
> > > available methods of time dissemination.  I am very concerned
> > > that
> > factions
> > > 
> > > of NIST consider that this should no longer be part of their
> > > mission.
> > > 
> > I think it is still on-topic for the following reasons:
> > 
> > 1. In many parts of the world, WWV is still a convenient time
> > reference.
> > You can get human-accurate time with nothing more than a $20
> > shortwave
> > receiver.  No, it is not time-nuts accurate but it will do for most
> > things
> > that people do, including celestial navigation and knowing when to
> > come to
> > dinner.
> > 
> > 2. It is a stable RF source for people monitoring changes in the
> > the
> > ionosphere. Whatever else it is, we KNOW they are emitting ON 2.5,
> > 5, 10,
> > 15, 20, and 25 MHz.
> > 
> > I also consider the discussion of GPS jamming to be relevant
> > because, for
> > people who DO want/need time-nuts accuracy, GPS is far and away the
> > most
> > convenient reference. Knowing how it might fail is useful.
> > 
> > YMMV.
> > 
> > --
> > 
> > 
> > 
> > Brian Lloyd
> > 706 Flightline
> > Spring Branch, TX 78070
> > brian at lloyd.aero
> > +1.210.802-8FLY (1.210.802-8359)
> > _______________________________________________
> > time-nuts mailing list -- time-nuts at lists.febo.com
> > To unsubscribe, go to http://lists.febo.com/mailman/
> > listinfo/time-nuts_lists.febo.com
> > and follow the instructions there.
> > 
> > _______________________________________________
> > time-nuts mailing list -- time-nuts at lists.febo.com
> > To unsubscribe, go to http://lists.febo.com/mailman/
> > listinfo/time-nuts_lists.febo.com
> > and follow the instructions there.
> > 
> 


More information about the time-nuts mailing list