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Disappearance of Short Wave Time Signals at 5, 10, 15, 20kHz
Disappearance of Short Wave Time Signals at 5, 10, 15, 20kHz
Thirty years ago, that ticking atomic clock could be picked up on any shortwave receiver, whether one paid $40 or $400 for it, or even on the boom-boxes of that day, of which the majority featured at least SW1 & SW2. Starting in the 1990s, it became increasingly more difficult to tune them in, even with a dedicated shortwave radio. They'd come in on only certain of those frequencies, or only at certain times of day. Now, they are all but inaudible except for once in a while, every other day, on one frequency or another. All I hear at those frequencies is loud static or noise. What's going on?? I actually use the signals to adjust 'dumb' clocks and watches(windup ones or basic battery ones). |
Disappearance of Short Wave Time Signals at 5, 10, 15, 20kHz
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Disappearance of Short Wave Time Signals at 5, 10, 15, 20kHz
Michael Black wrote:
- show quoted text - "It helps if you tune in the right frequencies. WWV (and WWVH in Hawaii) are on 5, 10, 15 and 20MHz, not KHz, and I think WWV is back on 25MHz" I am severely dyslexic and always confuse what's in mHz or kHz. But I have distinct long-term memories of these time signals being much easier to pick up decades ago than now, merely by flipping up the telescopic antenna on the radio or boombox I was using then. Didn't have to be right near a window or have an external antenna. The wikipedia article also mentions, about halfway down, a power reduction at one or more of the sites transmitting time signals, around 10 years ago. Perhaps people just don't rely on broadcast signals for accurate time anymore? Getting the time from a shortwave source guarantees next to no latency issues, unlike getting those same signals off the internet or the telephone. Yes - it matters. that. much. ;) |
Disappearance of Short Wave Time Signals at 5, 10, 15, 20kHz
Joe from Kokomo wrote:
Michael Black wrote: - show quoted text - "It helps if you tune in the right frequencies. WWV (and WWVH in Hawaii) are on 5, 10, 15 and 20MHz, not KHz, and I think WWV is back on 25MHz" On 6/18/2016 3:54 PM, wrote: I am severely dyslexic and always confuse what's in mHz or kHz. But I have distinct long-term memories of these time signals being much easier to pick up decades ago than now, merely by flipping up the telescopic antenna on the radio or boombox I was using then. Didn't have to be right near a window or have an external antenna. The wikipedia article also mentions, about halfway down, a power reduction at one or more of the sites transmitting time signals, around 10 years ago. Perhaps people just don't rely on broadcast signals for accurate time anymore? Getting the time from a shortwave source guarantees next to no latency issues, unlike getting those same signals off the internet or the telephone. Yes - it matters. that. much. ;) "I guess I have to respectfully ask what you are doing that requires such critical timing... For my ham station I am operating the JT9 and JT65 modes that are *VERY* sensitive to timing issues; there are several free apps (Dimension 4, for one) that will adjust your computer clock. Internet latency has not been a problem, keeping my computer clock within milliseconds. Would being within milliseconds be close enough for your application(s)? " Just the satisfaction of having the most accurate time on my 'dumb' timekeepers(my aforementioned watch and wind-up clocks, and even the one on the microwave). Last time I worked in an office, most of my co-workers wore watches, and many of them beeped at the top of the hour. After syncing mine to the time signals on SW, I'd go to work and start hearing watches beeping 2-6 minutes before mine and up to 5 minutes after mine. Just amusing, that's all, having the most accurate time and everyone else is all over the place. As are the DJs and announcers on local radio stations. I've witnessed internet time being as much as 1/2second behind the shortwave tones. |
Disappearance of Short Wave Time Signals at 5, 10, 15, 20kHz
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Disappearance of Short Wave Time Signals at 5, 10, 15, 20kHz
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Disappearance of Short Wave Time Signals at 5, 10, 15, 20kHz
BDK wrote:
In article , says... - show quoted text - "Fired my POS $14 portable, and it was blasting in at 5 and 10 MHZ, as usual at night. In the daytime, I can hear it at 15 and 20 almost all the time, and often at 10MHZ too. I'm not in a quiet RF zone, so I have no idea what you're babbling about. . " Guess it just depends on where each of us lives. I've lived in CT all my life, and your situation describes my time signal reception up until about twenty years ago. Since then, the noise went up and the time signals faded away. Not for nothing, I do get them occasionally - 2-3x per week on my Grundig Buzz Aldrin Edition 400. |
Disappearance of Short Wave Time Signals at 5, 10, 15, 20kHz
BDK wrote:
In article , says... - show quoted text - "Fired my POS $14 portable, and it was blasting in at 5 and 10 MHZ, as usual at night. In the daytime, I can hear it at 15 and 20 almost all the time, and often at 10MHZ too. I'm not in a quiet RF zone, so I have no idea what you're babbling about. . " Guess it just depends on where each of us lives. I've lived in CT all my life, and your situation describes my time signal reception up until about twenty years ago. Since then, the noise went up and the time signals faded away. Not for nothing, I do get them occasionally - 2-3x per week on my Grundig Buzz Aldrin Edition G6. |
Disappearance of Short Wave Time Signals at 5, 10, 15, 20kHz
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Disappearance of Short Wave Time Signals at 5, 10, 15, 20kHz
analogdial wrote:
- show quoted text - "Have you used different radios? Alot radios use simple RF stages which can be damaged by static discharge. The input stage gets knocked out but the radio still has enough gain to get some reception. This sort of damage can go unnoitced because it doesn't affect the internal ferrite antenna and the AM BC band still works fine. As others have noted, the noise floor is now MUCH higher than it used to be. " At least I know SOMETHING in the SW environment changed - the noise floor, and for whatever reason, probably budgetary, they reuduced transmission power on some of those stations. |
Disappearance of Short Wave Time Signals at 5, 10, 15, 20kHz
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Disappearance of Short Wave Time Signals at 5, 10, 15, 20kHz
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Disappearance of Short Wave Time Signals at 5, 10, 15, 20kHz
BDK wrote: "That's too bad. I just wish I could get rid of all
the moneysucking preachers" ??? Off topic! |
Disappearance of Short Wave Time Signals at 5, 10, 15, 20kHz
BDK wrote:
That's too bad. I just wish I could get rid of all the moneysucking preachers.. It'll take more than a mere wish. Even death can't keep Doc Scott from berating his listeners for not sending in enough money. |
Disappearance of Short Wave Time Signals at 5, 10, 15, 20kHz
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Disappearance of Short Wave Time Signals at 5, 10, 15, 20kHz
BDK wrote:
In article , says... - show quoted text - "So? I would rather listen to WWV/WWVH/CHU than listen to those scumbag preachers. " - show quoted text - What do evangelists have to do with my problems picking up WWV/H/B time syncs?? puhleeez... |
Disappearance of Short Wave Time Signals at 5, 10, 15, 20kHz
analogdial wrote: "can be damaged by static discharge. The input stage gets knocked out
but the radio still has enough gain to get some reception. " Wouldn't it take EMP or outright dropping the radio on the floor to cause that sort of damage? Or just years of gentle, normal usage? |
Disappearance of Short Wave Time Signals at 5, 10, 15, 20kHz
thekma @gmail.com wrote in message
... Disappearance of Short Wave Time Signals at 5, 10, 15, 20kHz Thirty years ago, that ticking atomic clock could be picked up on any shortwave receiver, whether one paid $40 or $400 for it, or even on the boom-boxes of that day, of which the majority featured at least SW1 & SW2. Starting in the 1990s, it became increasingly more difficult to tune them in, even with a dedicated shortwave radio. They'd come in on only certain of those frequencies, or only at certain times of day. Now, they are all but inaudible except for once in a while, every other day, on one frequency or another. All I hear at those frequencies is loud static or noise. What's going on?? What's going on is, you're a trolling dumb ****. This was all explained to you when you trolled a different group with this same nonsense. You showed that you don't even know what station you're trying to listen to, let alone what frequency it's on. You've confirmed that again, here. The simplest explanation is that you just don't know how to find the station on your radio. Too stupid! This was explained to you on the other newsgroup, but it probably could not penetrate your granite skullbone. You cited the Wikipedia article, too. But that's about a different station, which broadcasts on 60 Hz. This was explained to you, too. And the article does not say that the station reduced it's power about a decade ago. You'd know that if you could apply a bit of reading comprehension, but that's obviously not possible. And, of course, this was spelled out in the other group. None of this ever gets through to you, does it? As for the ridiculous claim that most boomboxes and radios from thirty years ago received SW, well, it's no surprise that you're an utter dumb**** on that subject too. So now what? Find yet another newsgroup, for you to pinch off more turds of trolldom? |
Disappearance of Short Wave Time Signals at 5, 10, 15, 20kHz
analogdial wrote: "can be damaged by static discharge. The input stage gets knocked out but the radio still has enough gain to get some reception. " On 6/21/2016 6:56 AM, wrote: Wouldn't it take EMP or outright dropping the radio on the floor to cause that sort of damage? Or just years of gentle, normal usage? This type of damage occurs on a fairly regular basis -- without anything as drastic as an EMP. Just walking across a carpet on a dry winter's day in a home with a low humidity level can create enough static electricity to damage some radios...no matter how gentle you are. ;-) |
Disappearance of Short Wave Time Signals at 5, 10, 15, 20kHz
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Disappearance of Short Wave Time Signals at 5, 10, 15, 20kHz
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Disappearance of Short Wave Time Signals at 5, 10, 15, 20kHz
On Tuesday, June 21, 2016 at 11:53:40 AM UTC-5, Michael Black wrote:
On Tue, 21 Jun 2016, wrote: analogdial wrote: "can be damaged by static discharge. The input stage gets knocked out but the radio still has enough gain to get some reception. " Wouldn't it take EMP or outright dropping the radio on the floor to cause that sort of damage? Or just years of gentle, normal usage? Yes and no. MOSFETs are very sensitive to static electricity, their very high input impedance (especially with no circuit built around them) does nothing to put a load on the static electricity, so they can be punched out. JFETs should be less vulnerable, but in more recent times I've seen talk of JFETs being vulnerable as if they are MOSFETs. That said, I was using a Delco car radio as a bedside radio, and at some point it lost sensitivity on the AM band, initially I just thought it was bad radio conditions. But eventually I changed the JFET and it was back to "normal" sensitivity", so it actually can be a problem. I have no recollection of anything that might have done the deed, this was a few feet of wire inside so it wouldn't have been lightning. Michael www.jimstone.is EMP ...jimstone.is, 82.221.129.208 |
Disappearance of Short Wave Time Signals at 5, 10, 15, 20kHz
Joe from Kokomo wrote:
"This type of damage occurs on a fairly regular basis -- without anything as drastic as an EMP. Just walking across a carpet on a dry winter's day in a home with a low humidity level can create enough static electricity to damage some radios...no matter how gentle you are. ;-) " So should I just buy a new radio, so I can be assured I have the latest and best circuitry? The G6 Buzz Aldrin Ed is about 7-8 years old, but everything except for the start timer(supposed to turn set on at user-set time) works on it. AM & FM recept is flawless, and I get lots of shortwave loud n clear between 2.5 and 30mHz, and occasionally those time signals. Sony seems to top all the Amazon reviews for compact units, by external and internal customers. What ever happened to Sangean? |
Disappearance of Short Wave Time Signals at 5, 10, 15, 20kHz
On Tuesday, June 21, 2016 at 12:39:01 PM UTC-5, wrote:
Joe from Kokomo wrote: "This type of damage occurs on a fairly regular basis -- without anything as drastic as an EMP. Just walking across a carpet on a dry winter's day in a home with a low humidity level can create enough static electricity to damage some radios...no matter how gentle you are. ;-) " So should I just buy a new radio, so I can be assured I have the latest and best circuitry? The G6 Buzz Aldrin Ed is about 7-8 years old, but everything except for the start timer(supposed to turn set on at user-set time) works on it. AM & FM recept is flawless, and I get lots of shortwave loud n clear between 2.5 and 30mHz, and occasionally those time signals. Sony seems to top all the Amazon reviews for compact units, by external and internal customers. What ever happened to Sangean? No such thing as having too many radios. Go buy that radio. |
Disappearance of Short Wave Time Signals at 5, 10, 15, 20kHz
Joe from Kokomo wrote: "This type of damage occurs on a fairly regular basis -- without anything as drastic as an EMP. Just walking across a carpet on a dry winter's day in a home with a low humidity level can create enough static electricity to damage some radios...no matter how gentle you are. ;-) " On 6/21/2016 1:39 PM, wrote: So should I just buy a new radio, so I can be assured I have the latest and best circuitry? The G6 Buzz Aldrin Ed is about 7-8 years old, but everything except for the start timer(supposed to turn set on at user-set time) works on it. AM & FM recept is flawless, and I get lots of shortwave loud n clear between 2.5 and 30mHz, and occasionally those time signals. So why buy a new radio? Sounds like yours is working just fine. Sony seems to top all the Amazon reviews for compact units, by external and internal customers. What ever happened to Sangean? No clue what happened to Sangean. Also, price is no indication if you will have a static problem. The Sony 2010 was a top drawer radio but it had a MOSFET front end and was thus subject to static damage. |
Disappearance of Short Wave Time Signals at 5, 10, 15, 20kHz
On 6/21/2016 12:54 PM, Michael Black wrote:
That said, I was using a Delco car radio as a bedside radio, and at some point it lost sensitivity on the AM band, initially I just thought it was bad radio conditions. But eventually I changed the JFET and it was back to "normal" sensitivity", so it actually can be a problem. I have no recollection of anything that might have done the deed, this was a few feet of wire inside so it wouldn't have been lightning. Unless you live in a Faraday cage, lightning can still be a problem. At one time I had a 15 foot indoor antenna. I put an NE-2 neon bulb -- which fires at about 60 volts -- across it and ground and when a thunderstorm got within 2 or 3 miles, the neon bulb would flash, so in your case there was a slight possibility it could have been lightning, but more likely shuffling across the rug or wearing polyester clothes static issue. |
Disappearance of Short Wave Time Signals at 5, 10, 15, 20kHz
On Tuesday, June 21, 2016 at 6:15:10 PM UTC-5, Joe from Kokomo wrote:
On 6/21/2016 12:54 PM, Michael Black wrote: That said, I was using a Delco car radio as a bedside radio, and at some point it lost sensitivity on the AM band, initially I just thought it was bad radio conditions. But eventually I changed the JFET and it was back to "normal" sensitivity", so it actually can be a problem. I have no recollection of anything that might have done the deed, this was a few feet of wire inside so it wouldn't have been lightning. Unless you live in a Faraday cage, lightning can still be a problem. At one time I had a 15 foot indoor antenna. I put an NE-2 neon bulb -- which fires at about 60 volts -- across it and ground and when a thunderstorm got within 2 or 3 miles, the neon bulb would flash, so in your case there was a slight possibility it could have been lightning, but more likely shuffling across the rug or wearing polyester clothes static issue. www.ham-radio.com/k6sti (Sangean) ...orrr, What happened to Sangean? |
Disappearance of Short Wave Time Signals at 5, 10, 15, 20kHz
On Tuesday, June 21, 2016 at 7:25:51 AM UTC-4, None wrote:
thekma @gmail.com wrote in message ... Disappearance of Short Wave Time Signals at 5, 10, 15, 20kHz Thirty years ago, that ticking atomic clock could be picked up on any shortwave receiver, whether one paid $40 or $400 for it, or even on the boom-boxes of that day, of which the majority featured at least SW1 & SW2. Starting in the 1990s, it became increasingly more difficult to tune them in, even with a dedicated shortwave radio. They'd come in on only certain of those frequencies, or only at certain times of day. Now, they are all but inaudible except for once in a while, every other day, on one frequency or another. All I hear at those frequencies is loud static or noise. What's going on?? What's going on is, you're a trolling dumb ****. This was all explained to you when you trolled a different group with this same nonsense. You showed that you don't even know what station you're trying to listen to, let alone what frequency it's on. You've confirmed that again, here. The simplest explanation is that you just don't know how to find the station on your radio. Too stupid! This was explained to you on the other newsgroup, but it probably could not penetrate your granite skullbone. You cited the Wikipedia article, too. But that's about a different station, which broadcasts on 60 Hz. This was explained to you, too. And the article does not say that the station reduced it's power about a decade ago. You'd know that if you could apply a bit of reading comprehension, but that's obviously not possible. And, of course, this was spelled out in the other group. None of this ever gets through to you, does it? As for the ridiculous claim that most boomboxes and radios from thirty years ago received SW, well, it's no surprise that you're an utter dumb**** on that subject too. So now what? Find yet another newsgroup, for you to pinch off more turds of trolldom? It is for clocks' synchronization. It is 60 KHz. |
Disappearance of Short Wave Time Signals at 5, 10, 15, 20kHz
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Disappearance of Short Wave Time Signals at 5, 10, 15, 20kHz
analogdial: CHU
Yes, I get them at 3330. I will try their other frequencies also. I use them as a last resort as I don't know if they are just a repeater for WWVB/H. Latency, y'know? I thought about this a couple days ago, and it gave me some pause: If the noise floor for world band has gone up so much in the last 10 years, then why is it only the time signals that I no longer pull in like I used to? |
Disappearance of Short Wave Time Signals at 5, 10, 15, 20kHz
analogdial: CHU
Yes, I get them at 3330. I will try their other frequencies also. I use them as a last resort as I don't know if they are just a repeater for WWVB/H. Latency, y'know? I thought about this a couple days ago, and it gave me some pause: If the noise floor for world band has gone up so much in the last 10 years, then why is it only the time signals that I no longer pull in like I used to? |
Disappearance of Short Wave Time Signals at 5, 10, 15, 20kHz
analogdial: CHU
Yes, I get them at 3330. I will try their other frequencies also. I use them as a last resort as I don't know if they are just a repeater for WWVB/H. Latency, y'know? I thought about this a couple days ago, and it gave me some pause: If the noise floor for world band has gone up so much in the last 10 years, then why is it only the time signals that I no longer pull in like I used to? |
Disappearance of Short Wave Time Signals at 5, 10, 15, 20kHz
analogdial: CHU
Yes, I get them at 3330. I will try their other frequencies also. I use them as a last resort as I don't know if they are just a repeater for WWVB/H. Latency, y'know? I thought about this a couple days ago, and it gave me some pause: If the noise floor for world band has gone up so much in the last 10 years, then why is it only the time signals that I no longer pull in like I used to? |
Disappearance of Short Wave Time Signals at 5, 10, 15, 20kHz
Michael Black wrote: "Put the radio near the window, the time signals
will come in as well as ever. Because you're getting away from all the inside noise, and closer " I can take the set outside, to a nearby open park, and the reception of the time sigs is just as awful as it would be if I put the radio next to my computer or mobile phone. |
Disappearance of Short Wave Time Signals at 5, 10, 15, 20kHz
On Fri, 24 Jun 2016, analogdial wrote:
wrote: What do evangelists have to do with my problems picking up WWV/H/B time syncs?? puhleeez... Have you tried tuning in CHU? Maybe that's the problem. I don't think I've ever heard CHU on the 14MHz frequency, and that's going back to 1971. The 7MHz one always seemed the most useful, but they moved it a few years ago, so if someone had an old book, they might think CHU wasn't coming in, when it's really just on a different frequency. The 3MHz one seems fine, but mostly at night. Michael |
Disappearance of Short Wave Time Signals at 5, 10, 15, 20kHz
analogdial wrote: "Have you tried tuning in CHU? "
Oh yeah, 33.3mHz. I'm concerned about latency issues and use them only as a backup. I don't know if they are just a repeater for the American time sources. Something else I was thinking about the last couple days that gave me pause: If the noise floor has gone up so much lately for world band, then how come it is only these time signals that I can't pull in as readily as I used to years ago? |
Disappearance of Short Wave Time Signals at 5, 10, 15, 20kHz
For anyone who doesn't believe classic-era boom boxes didn't have
shortwave bands on them: http://componit.de/wp-content/upload...05/Boombox.jpg Zoom in and count how many bands are on the scales of most of them... |
Disappearance of Short Wave Time Signals at 5, 10, 15, 20kHz
analogdial wrote: "Have you tried tuning in CHU? " On 6/24/2016 3:41 PM, wrote: Oh yeah, 33.3mHz. Oooops, decimal point in the wrong place, should be 3.33 MHz I'm concerned about latency issues and use them only as a backup. Huh? NO "latency" (not quite sure what you mean by that). Just the RF propagation delay (at the speed of light) from their transmitter to your location. No reason to use them as a "backup", they are every bit the equal to WWV. I don't know if they are just a repeater for the American time sources. Again, NO. They are their own man, so to speak. They use their own atomic clock, radio transmitters, etc. A complete, stand-alone Canadian equivalent of WWV and just as accurate as WWV. They are NOT WWV repeaters. See: http://www.nrc-cnrc.gc.ca/eng/servic...hort_wave.html for a complete description of Canada's time service. |
Disappearance of Short Wave Time Signals at 5, 10, 15, 20kHz
Joe from Kokomo wrote: "Oooops, decimal point in the wrong
place, should be 3.33 MHz " sigh... I never got this numbers thing - and I never will. My relationship with math and numbers makes Kennedy and Khrushchev look like lovers by comparison! |
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