WWV/WWVH Closure
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What is the justification for continued funding of WWV? Hasn't it been
obsoleted (if that's a verb) by GPS as far as being a time and freq standard? John AE5X https://ae5x.blogspot.com ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
Re: WWV/WWVH Closure
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Well let's start with all of those self-setting watches and wall clocks...
and then the propagation information that is broadcast. Does GPS do that? Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ Owner - Operator Big Signal Ranch K9ZC Staunton, Illinois Owner Operator Villa Grand Piton J68HZ Soufriere, St. Lucia W.I. Rent it: www.VillaGrandPiton.com Like us on Facebook! Moderator North American QRO Group at Groups.IO. email: [hidden email] -----Original Message----- From: [hidden email] [mailto:[hidden email]] On Behalf Of John Harper Sent: Monday, August 20, 2018 10:33 AM To: Elecraft list <[hidden email]> Subject: [Elecraft] WWV/WWVH Closure What is the justification for continued funding of WWV? Hasn't it been obsoleted (if that's a verb) by GPS as far as being a time and freq standard? John AE5X https://ae5x.blogspot.com ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] --- This email has been checked for viruses by AVG. https://www.avg.com ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
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Yes.
https://www.qrp-labs.com/clockn.html https://www.runnersworld.com/gear/a20827055/advanced-gps-watches-for-runners/ and more. Watches and clocks as "justification" for continued WWV broadcasts is laughable. John AE5X https://ae5x.blogspot.com On Mon, Aug 20, 2018 at 10:36 AM Dr. William J. Schmidt <[hidden email]> wrote: > Well let's start with all of those self-setting watches and wall clocks... > and then the propagation information that is broadcast. Does GPS do that? > > > Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ > > Owner - Operator > Big Signal Ranch – K9ZC > Staunton, Illinois > > Owner – Operator > Villa Grand Piton – J68HZ > Soufriere, St. Lucia W.I. > Rent it: www.VillaGrandPiton.com > Like us on Facebook! > > Moderator – North American QRO Group at Groups.IO. > > email: [hidden email] > > > > -----Original Message----- > From: [hidden email] > [mailto:[hidden email]] On Behalf Of John Harper > Sent: Monday, August 20, 2018 10:33 AM > To: Elecraft list <[hidden email]> > Subject: [Elecraft] WWV/WWVH Closure > > What is the justification for continued funding of WWV? Hasn't it been > obsoleted (if that's a verb) by GPS as far as being a time and freq > standard? > > John AE5X > https://ae5x.blogspot.com > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[hidden email] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message > delivered to [hidden email] > > > --- > This email has been checked for viruses by AVG. > https://www.avg.com > > Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
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In reply to this post by Dr. William J. Schmidt, II
And it is a cheap backup for frequency and timing due to GPS lost or
scrambled due to military actions. Don, KI4D -----Original Message----- From: [hidden email] [mailto:[hidden email]] On Behalf Of Dr. William J. Schmidt Sent: Monday, August 20, 2018 11:37 AM To: 'Elecraft Reflector' <[hidden email]> Cc: 'John Harper' <[hidden email]> Subject: Re: [Elecraft] WWV/WWVH Closure Well let's start with all of those self-setting watches and wall clocks... and then the propagation information that is broadcast. Does GPS do that? Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ Owner - Operator Big Signal Ranch K9ZC Staunton, Illinois Owner Operator Villa Grand Piton J68HZ Soufriere, St. Lucia W.I. Rent it: www.VillaGrandPiton.com Like us on Facebook! Moderator North American QRO Group at Groups.IO. email: [hidden email] -----Original Message----- From: [hidden email] [mailto:[hidden email]] On Behalf Of John Harper Sent: Monday, August 20, 2018 10:33 AM To: Elecraft list <[hidden email]> Subject: [Elecraft] WWV/WWVH Closure What is the justification for continued funding of WWV? Hasn't it been obsoleted (if that's a verb) by GPS as far as being a time and freq standard? John AE5X https://ae5x.blogspot.com ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] --- This email has been checked for viruses by AVG. https://www.avg.com ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
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In reply to this post by John Harper
> On Aug 20, 2018, at 11:32 , John Harper <[hidden email]> wrote: > > What is the justification for continued funding of WWV? Hasn't it been > obsoleted (if that's a verb) by GPS as far as being a time and freq > standard? Here is (are?) my two cents: I think this is a significant mistake for at least two big picture reasons: 1) There are still many devices (notably standalone clocks and watches) that set time from these signals, and 2) it is the only global tool w/ have to maintain a reasonable approximation of “correct” time in the event of a GPS failure which _will_ happen some day (ref: Normal Accidents by Perrow- see below) and one small-picture reason: they are a stable, reliable ways to check propagation and HF receiver system performance. Nothing wrong with beacons, but these frequencies are easy to remember ;-) Never mind for the nostalgic value. With regard to #2, I was personally impacted by two failures during the experimental phase of GPS: - ground control uploaded ephemeris data with a “zero” for orbit altitude, all receivers that didn’t crash on math errors produced a position at the center of the ellipsoid, and - the (very limited) constellation orbit inclinations were changed and our rise time predictions were so far off we did not find any satellites to track To the best of my knowledge we haven’t seen any blunders of this scale since the system went into normal operation but eventually we be impacted by either a similar blunder or a successful hack. Normal Accidents, Living with High Risk Technologies by Charles Perrow, 1999 (yeah, old but still true and the book is widely available.) ISBN 9781400828494 -Dale KB1ZKD > > John AE5X > https://ae5x.blogspot.com > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[hidden email] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to [hidden email] ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
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In reply to this post by John Harper
Personal note....
Ever since I home-brewed my first receiver when I was 15, I've used WWV at multiple frequencies as a source of reliable on-air test signals. My early receivers used simple direct-conversion schemes based on JFETs (remember the MPF102?). Get the details wrong, and you'd hear WWV whether you were tuned to it or not, thanks to what I now know was IP2 (AM breakthrough). Do it right, and you'd be rewarded with those undulating time-tones: minimalist, almost musical. Something Phillip Glass would pipe into his sensory-deprevation tank. Oh, and you could set your watch to it. These days I still tune into WWV to check VFO calibration, set clocks in the field, and get an approximation of the MUF (Maximum usable frequency). When propagation is good, even the 20.000000 MHz signal soars across the aether, a faithful and tireless chronological savant. Losing it would be a tragedy, but a nerdy one, not Greek. Wayne N6KR ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
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Yeah, I'd miss them, BUT, my little Elecraft hand-held XG3 sig gen is pretty
handy for that too . Also, I don't believe funding for the 60kHz sig was ever at risk and THAT's what your (antique) watch uses. 73, Charlie k3ICH -----Original Message----- From: [hidden email] <[hidden email]> On Behalf Of Wayne Burdick Sent: Monday, August 20, 2018 11:53 AM To: Elecraft Reflector <[hidden email]> Subject: Re: [Elecraft] WWV/WWVH Closure Personal note.... Ever since I home-brewed my first receiver when I was 15, I've used WWV at multiple frequencies as a source of reliable on-air test signals. My early receivers used simple direct-conversion schemes based on JFETs (remember the MPF102?). Get the details wrong, and you'd hear WWV whether you were tuned to it or not, thanks to what I now know was IP2 (AM breakthrough). Do it right, and you'd be rewarded with those undulating time-tones: minimalist, almost musical. Something Phillip Glass would pipe into his sensory-deprevation tank. Oh, and you could set your watch to it. These days I still tune into WWV to check VFO calibration, set clocks in the field, and get an approximation of the MUF (Maximum usable frequency). When propagation is good, even the 20.000000 MHz signal soars across the aether, a faithful and tireless chronological savant. Losing it would be a tragedy, but a nerdy one, not Greek. Wayne N6KR ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
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Hi Charlie,
This is an exact quote from page NIST-25 of the proposed FY2019 NIST budget: < www.osec.doc.gov/bmi/budget/FY19CBJ/NIST_and_NTIS_FY2019_President 's_Budget_for_508_comp.pdf> "NIST will discontinue the dissemination of the U.S. time and frequency via the NIST radio stations in Hawaii and Ft. Collins, CO. These radio stations transmit signals that are used to synchronize consumer electronic products like wall clocks, clock radios, and wristwatches, and may be used in other applications like appliances, cameras, and irrigation controllers 73 Frank W3LPL ----- Original Message ----- From: "Charlie T" <[hidden email]> To: [hidden email] Sent: Monday, August 20, 2018 4:45:13 PM Subject: Re: [Elecraft] WWV/WWVH Closure Yeah, I'd miss them, BUT, my little Elecraft hand-held XG3 sig gen is pretty handy for that too . Also, I don't believe funding for the 60kHz sig was ever at risk and THAT's what your (antique) watch uses. 73, Charlie k3ICH -----Original Message----- From: [hidden email] <[hidden email]> On Behalf Of Wayne Burdick Sent: Monday, August 20, 2018 11:53 AM To: Elecraft Reflector <[hidden email]> Subject: Re: [Elecraft] WWV/WWVH Closure Personal note.... Ever since I home-brewed my first receiver when I was 15, I've used WWV at multiple frequencies as a source of reliable on-air test signals. My early receivers used simple direct-conversion schemes based on JFETs (remember the MPF102?). Get the details wrong, and you'd hear WWV whether you were tuned to it or not, thanks to what I now know was IP2 (AM breakthrough). Do it right, and you'd be rewarded with those undulating time-tones: minimalist, almost musical. Something Phillip Glass would pipe into his sensory-deprevation tank. Oh, and you could set your watch to it. These days I still tune into WWV to check VFO calibration, set clocks in the field, and get an approximation of the MUF (Maximum usable frequency). When propagation is good, even the 20.000000 MHz signal soars across the aether, a faithful and tireless chronological savant. Losing it would be a tragedy, but a nerdy one, not Greek. Wayne N6KR ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
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In reply to this post by Charlie T, K3ICH
I absolutely love my XG3 and have not even begun to exhaust the list of uses for it....
Reference signal source is NOT on the list.... I have had the priviledge of working with half a dozen XG3s at one time... They are not even CLOSE to precision frequency references.... often varying anywhere from 0 to 30Hz from the programmed frequency.... Of course, that is NOT their purpose.... On the other hand, using the 20 or yes, the 25 MHz signal from WWV, I can get sub 1Hz accuracy when zero beating my K3S. I happen to be fortunate to own frequency counters, external references, et al instruments to get BOTH precise frequency, and AT LEAST equally important, precise TIME syncs.... The VAST majority of filks do not.... If you only have an XG3 then you fall in that vast majority too. WWV is essential to national infrastructure. When the grid goes down and the cell towers go dark.... or the military flips the switch on the satellites, WWV should ALWAYS be there to keep the system running. 73,Clay, KY5G Sent from my Verizon, Samsung Galaxy smartphone -------- Original message --------From: Charlie T <[hidden email]> Date: 8/20/18 11:45 (GMT-06:00) To: [hidden email] Subject: Re: [Elecraft] WWV/WWVH Closure Yeah, I'd miss them, BUT, my little Elecraft hand-held XG3 sig gen is pretty handy for that too . Also, I don't believe funding for the 60kHz sig was ever at risk and THAT's what your (antique) watch uses. 73, Charlie k3ICH -----Original Message----- From: [hidden email] <[hidden email]> On Behalf Of Wayne Burdick Sent: Monday, August 20, 2018 11:53 AM To: Elecraft Reflector <[hidden email]> Subject: Re: [Elecraft] WWV/WWVH Closure Personal note.... Ever since I home-brewed my first receiver when I was 15, I've used WWV at multiple frequencies as a source of reliable on-air test signals. My early receivers used simple direct-conversion schemes based on JFETs (remember the MPF102?). Get the details wrong, and you'd hear WWV whether you were tuned to it or not, thanks to what I now know was IP2 (AM breakthrough). Do it right, and you'd be rewarded with those undulating time-tones: minimalist, almost musical. Something Phillip Glass would pipe into his sensory-deprevation tank. Oh, and you could set your watch to it. These days I still tune into WWV to check VFO calibration, set clocks in the field, and get an approximation of the MUF (Maximum usable frequency). When propagation is good, even the 20.000000 MHz signal soars across the aether, a faithful and tireless chronological savant. Losing it would be a tragedy, but a nerdy one, not Greek. Wayne N6KR ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
Re: WWV/WWVH Closure
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In reply to this post by John Harper
One could make the same argument about CW: there are new modes that
provide reliable communication well below the noise floor. For that matter, HF is subject to propagation, and the internet is like a band that's always open -- and the data rates are higher. Yet there is an "installed base" of "legacy operators" who love CW. There is an installed base of devices that work wonderfully (atomic clocks) that will no longer keep accurate time unless they somehow hear JJY. 73 -- Lynn P.S. no flames from CW ops -- I support your love for the mode and diversity in our hobby. On 8/20/2018 8:32 AM, John Harper wrote: > What is the justification for continued funding of WWV? Hasn't it been > obsoleted (if that's a verb) by GPS as far as being a time and freq > standard? ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
Re: WWV/WWVH Closure
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I haven't checked the rules, but box with a low-power 60 KHz transmitter
and something like a Raspberry Pi to get time via NTP and transmit WWVB-like signals over 100 feet or so might be a viable product. 73 -- Lynn ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
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In reply to this post by Lynn W. Taylor, WB6UUT-3
Except when it isn’t … you must have an exceptional internet provider. It’s like much of the rest of the US communications infrastructure — subject to going dark at the worst possible time.
Grant NQ5T K3 #2091 KX3 #8342 > and the internet is like a band that's always open -- ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
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Folks -
Thread closed. Both OT and way over postiing number limits. While an important topic, yhis is an policy discussion that is outside of Elecraft list guidelines for permitted topics. Please take it off list for further discussion in the interest of reducing list email overload for others. In general, please do not post or discuss amateur radio policy, related general policy issues, or political issues on this list, as they can rapidly overload our list with a high volume of emails. 73, Eric Moderator etc. /elecraft.com/ On 8/20/2018 10:58 AM, Grant Youngman wrote: > Except when it isn’t … you must have an exceptional internet provider. It’s like much of the rest of the US communications infrastructure — subject to going dark at the worst possible time. > > Grant NQ5T > K3 #2091 KX3 #8342 > >> and the internet is like a band that's always open -- > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[hidden email] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to [hidden email] ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
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In reply to this post by Dale Chayes
On 8/20/2018 8:48 AM, Dale Chayes wrote:
> I think this is a significant mistake for at least two big picture > reasons: > 1) There are still many devices (notably standalone clocks and > watches) that set time from these signals, and AFAIK the "self-setting" watches and clocks use the WWVB signal at 60 kHz ,not the HF signals from WWV/WWVH. The downside is that for some reason the 60 kHz signal do not penetrate the walls of my apartment or the noise level is so high or both so I can't even take advantage of that. 73 de K2ASP - Phil Kane Elecraft K2/100 s/n 5402 From a Clearing in the Silicon Forest Beaverton (Washington County) Oregon ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
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In reply to this post by Dr. William J. Schmidt, II
On 8/20/2018 8:50 AM, Walter Underwood wrote:
> The clocks I know about use WWVB (VLF), not WWV or WWVH (both HF). IIRC at one time back in the dark ages of hamdom, Heathkit did sell a clock kit that used either the 5 MHz or 10 MHz signal from WWV/WWVH. One of the many that I never built. 73 de K2ASP - Phil Kane Elecraft K2/100 s/n 5402 From a Clearing in the Silicon Forest Beaverton (Washington County) Oregon ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
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In reply to this post by John Harper
Until someone takes out the GPS birds. It’s always good the have backup.
Sent from my iPad > On Aug 20, 2018, at 8:32 AM, John Harper <[hidden email]> wrote: > > What is the justification for continued funding of WWV? Hasn't it been > obsoleted (if that's a verb) by GPS as far as being a time and freq > standard? > > John AE5X > https://ae5x.blogspot.com > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[hidden email] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to [hidden email] > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
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In reply to this post by John Harper
The GPS system is vulnerable. The systems at NIST aren't nearly as
vulnerable. GPS is a navigation system it is not a time keeping system. Every ballistic missile this country still has uses INS not GPS. It's "jam proof". R. Kevin Stover AC0H ARRL, FISTS, SKCC, NAQCC. "If it doesn't work the first time you push the button it won't work the 20th.Just stop." -----Original Message----- From: [hidden email] <[hidden email]> On Behalf Of John Harper Sent: Monday, August 20, 2018 10:33 AM To: Elecraft list <[hidden email]> Subject: [Elecraft] WWV/WWVH Closure What is the justification for continued funding of WWV? Hasn't it been obsoleted (if that's a verb) by GPS as far as being a time and freq standard? John AE5X https://ae5x.blogspot.com ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
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In reply to this post by Lynn W. Taylor, WB6UUT-3
I assume the RPI is going to have some software that calculates and adjusts
automatically on the fly for network latency from said NTP server. Oh by the way most all NTP servers get their time from an NIST time base...NOT GPS. R. Kevin Stover AC0H ARRL, FISTS, SKCC, NAQCC. "If it doesn't work the first time you push the button it won't work the 20th.Just stop." -----Original Message----- From: [hidden email] <[hidden email]> On Behalf Of Lynn W. Taylor, WB6UUT Sent: Monday, August 20, 2018 12:38 PM To: [hidden email] Subject: Re: [Elecraft] WWV/WWVH Closure I haven't checked the rules, but box with a low-power 60 KHz transmitter and something like a Raspberry Pi to get time via NTP and transmit WWVB-like signals over 100 feet or so might be a viable product. 73 -- Lynn ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
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In reply to this post by kstover
This thread was closed several days ago. Please, -no- more posts on this.
Eric Moderator elecraft.com --- Sent from my iPhone 6S > On Aug 22, 2018, at 4:30 PM, <[hidden email]> <[hidden email]> wrote: > > The GPS system is vulnerable. The systems at NIST aren't nearly as > vulnerable. > ..... ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
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In reply to this post by kstover
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Eric Moderator elecraft.com --- Sent from my iPhone 6S > On Aug 22, 2018, at 4:38 PM, <[hidden email]> <[hidden email]> wrote: > > I assume the RPI is going to have some software that calculates and adjusts > automatically on the fly for network latency from said NTP server. Oh by the > way most all NTP servers get their time from an NIST time base...NOT GPS. > > R. Kevin Stover AC0H > > ARRL, FISTS, SKCC, NAQCC. > "If it doesn't work the first time you push the button it won't work the > 20th.Just stop." > > -----Original Message----- > From: [hidden email] <[hidden email]> On > Behalf Of Lynn W. Taylor, WB6UUT > Sent: Monday, August 20, 2018 12:38 PM > To: [hidden email] > Subject: Re: [Elecraft] WWV/WWVH Closure > > I haven't checked the rules, but box with a low-power 60 KHz transmitter and > something like a Raspberry Pi to get time via NTP and transmit WWVB-like > signals over 100 feet or so might be a viable product. > > 73 -- Lynn > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[hidden email] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html Message > delivered to [hidden email] > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[hidden email] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to [hidden email] Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
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