I've got nothing running at the moment that decodes or locks to DCF77, and
obviously can't comment on the possibility of localised interference, but
here on the west coast of Scotland the signal certainly looks and sounds
just as it always does.
It's a nice clean signal peaking at approx
Here in north Italy (QTH locator JN45UJ) the DCF77 reception is regular.
On Tue, Jan 1, 2013 at 1:40 PM, Anthony G. Atkielski
anth...@atkielski.comwrote:
For the past several days (now thirty hours straight), none of my
radio-synchronized clocks has been able to synchronize with DCF77. Is
Sent: Tuesday, January 01, 2013 7:40 AM
To: time-nuts@febo.com
Subject: [time-nuts] Is there anything wrong with DCF77?
For the past several days (now thirty hours straight), none of my
radio-synchronized clocks has been able to synchronize with DCF77. Is
there a problem with the transmitter
In message 01cde828$6a8e29d0$3faa7d70$@com, George Race writes:
Hi Anthony, is there any possibility that you have a source of local
interference that started up in your home or area?
For DCF77 a very typical source of trouble is old CRT-based televisions
or monitors, since 15625 Hz
Hi Anthony, is there any possibility that you have a source of local
interference that started up in your home or area?
Maybe, but I'm not sure where it would come from. It's been like this
for days, and today there is no reception by any of the clocks at all.
If just one clock failed to
For DCF77 a very typical source of trouble is old CRT-based televisions
or monitors, since 15625 Hz * 5 = 78125 Hz
I suppose someone nearby could have received a collector's-item
Trinitron for Christmas.
What about Wi-Fi, cell phones, and such? They are way far away in
frequency, but I'm not a
On 01/01/2013 09:54 AM, Anthony G. Atkielski wrote:
For DCF77 a very typical source of trouble is old CRT-based televisions
or monitors, since 15625 Hz * 5 = 78125 Hz
I suppose someone nearby could have received a collector's-item
Trinitron for Christmas.
What about Wi-Fi, cell phones, and
Hi
The first thing to think about is what did I get for Christmas?. If it runs
24 hours a day, it might be the source of the problem. Just about anything
*could* have a switching power supply in it these days. It could be as silly as
the plug in the wall charger for a cell phone.
Bob
On Jan
In message 1991305643.20130101185...@atkielski.com, Anthony G. Atkielski wr
ites:
What about Wi-Fi, cell phones, and such? They are way far away in
frequency, but I'm not a radio engineer. Anything high-tech that could
interfere?
Far more likely are switch-mode power-supplies, either in
Hi
Could be that neighbor with the 1,000,000 light Christmas display ….
Bob
On Jan 1, 2013, at 2:14 PM, Poul-Henning Kamp p...@phk.freebsd.dk wrote:
In message 1991305643.20130101185...@atkielski.com, Anthony G. Atkielski
wr
ites:
What about Wi-Fi, cell phones, and such? They
Could be that neighbor with the 1,000,000 light Christmas display
.
Hmm ... that sounds like a likely culprit. There are some Christmas
lights nearby. We'll see if the problem disappears with the lights.
Good ideas, thanks Bob and Poul.
--
Anthony
, 2013 7:40 AM
To: time-nuts@febo.com
Subject: [time-nuts] Is there anything wrong with DCF77?
For the past several days (now thirty hours straight), none of my
radio-synchronized clocks has been able to synchronize with DCF77. Is
there a problem with the transmitter, or maybe a geomagnetic storm
On 1/1/2013 9:42 PM, Tom Harris wrote:
If you can look at the output of a DCF77 demodulator you should see a nice
clean set of 100ms/200ms pulses every second. All you need is a CRO, or you
could just use a LED to indicate the state.
This is how DCF77 looks, when received with an SDR
On 1/1/2013 9:42 PM, Tom Harris wrote:
If you can look at the output of a DCF77 demodulator you should see a nice
clean set of 100ms/200ms pulses every second. All you need is a CRO, or you
could just use a LED to indicate the state.
This is how DCF77 looks, when received with an SDR
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