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25796

Re: Anyone planning to record VLF signals during the eclipse

Hi, There is a slight chance to observe effects via the propagation paths from NAU, NAA or NML to Europe. Especially NAU looks promising since the C-flare from
Peter
Jul 19
#25796
 
25795

Re: Anyone planning to record VLF signals during the eclipse

Hi Joe it seems that most will be recording amplitude. There is a problem here as at LF/VLF there are two causes of amplitude change. First the change in the
Alan Melia
Jul 18
#25795
 
25794

Re: Anyone planning to record VLF signals during the eclipse

Here is an effort to monitor the 60kHz WWVB during the 2017 eclipse. Joe http://www.hamsci.org/node/148 ________________________________ From:
Schober, Joseph
Jul 18
#25794
 
25793

Re: 4KHz

... Qué plau ! Don't know if they say that in Languedoc, but it's gascon for sure :) That almost the only thing I know. I was born in Bordeaux but don't speak
thierry alves
Jul 18
#25793
 
25792

Re: sid ?

Hi Jochen, Jean-Marie, all, ... Five SID, not big ones, was recorded here today on Skelton GBZ (19.58 kHz) and Tavolara ICV (20.27 kHz), with max at 0727,1036
Jean-Pierre Godet
Jul 16
#25792
 
25791

Re: sid ?

I can confirm it. Started around 06:00.. 73's de HB9DRT Jochen [Non-text portions of this message have been removed]
jochen.richert
Jul 16
#25791
 
25790

sid ?

Bonsoir à tous, peut être un ! qui peut confirmer ? 73's JM F5VLB Moderate G2 geomagnetic storm (Kp6) /Threshold Reached: 14:54 UTC/ Moderate G2 geomagnetic
f5vlb
Jul 16
#25790
 
25789

SUMMARY: Geomagnetic Sudden Impulse

Space Weather Message Code: SUMSUD Serial Number: 222 Issue Time: 2017 Jul 16 0609 UTC SUMMARY: Geomagnetic Sudden Impulse Observed: 2017 Jul 16 0601 UTC
SWPC Product Subscription Service
Jul 16
#25789
 
25788

Re: list of stations

... +54.911643N,-3.278456E http://wikimapia.org/#lang=en&lat=54.911643&lon=-3.278456&z=13&m=b&search=54.911643N%2C-3.278456E ... Most of the time. It goes off
Paul
Jul 15
#25788
 
25787

Re: list of stations

I make the frequency of GBZ, averaged over 5 days, to be 19579.999999955 Hz +/- 7e-9 Hz, that's an offset of -45e-9 Hz. Here's a 6 day phase plot at 19580.000
Paul
Jul 15
#25787
 
25786

Re: list of stations

... I have measured the center frequency and it is actually 19.575 rather than 19.58 kHz. Being 200 Bd MSK means it is keying 19.55 and 19.60 kHz (a
David L. Wilson
Jul 15
#25786
 
25785

Re: list of stations

Does anybody have details on transmission GBZ 19.58 kHz station. I am trying to use it as a long duration VLF pattern spectrogram. Is it still in operation?
pajakc
Jul 15
#25785
 
25784

Re: Powering Raspberry Pi remotely

Thanks Tom, My unit is all surface mount, except for the FET's so that might not be so easy to try but next step is shielding around the cable and the device
Simon Kennedy
Jul 13
#25784
 
25783

Re: Powering Raspberry Pi remotely

Simon, looking at the shot again I realized that there is a series resistor on the Gate in the Harbor Freight part. If yours is similar you might try
Tom Becker
Jul 13
#25783
 
25782

Re: list of stations

... suggestion can ... I had assumed that it was probably not your list but wanted to add more information. I was kind of fun trying a (very little) French
David L. Wilson
Jul 13
#25782
 
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