david-tay...@blueyonder.co.uk said:
> Thanks for that, Hal. I would set up some monitoring myself except that I
> don't have a UPS so even a 16-second outage would not be recorded. Could
> use a portable PC, I suppose... We have perhaps one outage every two years
> on average, and they last for
Le 28/06/2012 00:28, Stijn Nestra a écrit :
Hello,
I have build a NTP server using the Soekris and M12 concept and I am
using a freebsd image that Jason has made.
The problem is that I am a total fbsd noob and that I want the
oncore_msg logged on a syslog server. I have tried several things an
Hello,
I have build a NTP server using the Soekris and M12 concept and I am
using a freebsd image that Jason has made.
The problem is that I am a total fbsd noob and that I want the
oncore_msg logged on a syslog server. I have tried several things and I
get the messages only on my console. Can
Hi Tony,
I'd try a battery pack instead of the wall-wart. If it's an ebay china special
it may be pretty bad. Why are you using DCF rather than MSF? I have an old
Radiocode Clocks MSF receiver running in the garage without a problem, I'm in
Cambridge too.
Many years ago I tried a MSF receiver ba
Kasper Pedersen wrote:
>
> When I did my DCF77 receiver, my first source of interference was the
> common noise on the output of the supply I was powering it off of.
So I'm using a cheap and cheerful (there's a theme here) wall wart with
micro-USB connector which I guess is pretty horrid in this
Good idea... do you think to use batteries or along the differential line
run a power line? Power... only a few mA would be enough.
On Wed, Jun 27, 2012 at 6:20 PM, Chris Albertson
wrote:
> One trick that works, place the entire receiver. on a pole (black ABS pipe)
> fixed to the back yard fence.
One trick that works, place the entire receiver. on a pole (black ABS pipe)
fixed to the back yard fence. This places it as far from any house or
power line. I don't think the pole needs to be tall. 8 feet get should be
enough.Of course now you need a long wire and a pair of RS422 driver
chi
This sounds way more complicated than the jamming done by Nellis AFB. Their
gear is just a Marconi signal generator, and roof mounted antenna. It can
generate two bands of broadband noise (mil and civilian). The gear looks
totally COTS to me. They have omni and directional antennas.
If the coo
Yes, this last is exactly my same experience with the DCF77: the receiver
used alone with a linear power supply was running fine, connected to the PC
or a microproccesor board with a switching power supply was a problem.
On Wed, Jun 27, 2012 at 5:59 PM, Kasper Pedersen wrote:
> On 06/27/2012 04:0
On 06/27/2012 04:04 PM, Tony Finch wrote:
> Are there any basic steps I should take to improve the reception quality
> of a radio clock? I have a cheap and cheerful DCF77 receiver for
> connecting to some GPIO pins, but its PPS output is basically noise with
> maybe a one-second period. Perhaps it
Someone asked about the short ADEV tutorial I wrote a few years ago. The text
and graphs are at:
www.leapsecond.com/pages/adev/
/tvb (iPhone4)
On Jun 26, 2012, at 14:32, "Tom Van Baak (lab)" wrote:
> With four points one can compute ADEV...
>
>
>
Andrew Back wrote:
>
> I got one of those SYMTRIK modules working but the antenna orientation
> did seem a bit fiddly, and this was MSF and not DCF77.
>
> http://www.designspark.com/content/atomic-time-raspberry-pi
>
> Don't suppose you're using a Raspberry Pi for this? I'd like to get
> this wo
Hi Tony,
On 27 June 2012 15:04, Tony Finch wrote:
> Are there any basic steps I should take to improve the reception quality
> of a radio clock? I have a cheap and cheerful DCF77 receiver for
> connecting to some GPIO pins, but its PPS output is basically noise with
> maybe a one-second period. P
Hi Tony:
The loopstick antenna has a pattern with a couple of nulls so the orientation
is important.
Also during the daytime there's probably too much noise to receive a good
signal so best to listen around local midnight.
Have Fun,
Brooke Clarke
http://www.PRC68.com
http://www.end2partygover
Are there any basic steps I should take to improve the reception quality
of a radio clock? I have a cheap and cheerful DCF77 receiver for
connecting to some GPIO pins, but its PPS output is basically noise with
maybe a one-second period. Perhaps it's just cheap and nasty.
I am in Cambridge.
Tony
Folks, I have received the following notice:
__
NOTIFICATION OF A GPS JAMMING EXERCISE SENNYBRIDGE TRAINING AREA, WALES,
DURING THE PERIOD 24 SEPTEMBER - 5 OCTOBER 2012
Details of Low Power Jamming.
Dates: Between 24-28 September and 1-5 O
Interesting this idea: mounting a bottom GPS antenna to check for
unexpected signals... and you don't need a complete GPS receiver maybe only
a sort of selective field strength meter or something like the codeless GPS
receiver used by Vaisala on their radiosondes.
On Wed, Jun 27, 2012 at 6:45 AM,
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