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Click here to view live plots of VLF stations DHO, JXN, NAA, NLK, NPM, NTS and NWC.
Gallery of UltraMSK VLF data
Below is a sample of VLF data obtained using UltraMSK. All signals were received in Dunedin, New Zealand, using a vertical electric field antenna.
Each plot has a title of the form XXXYYYYMMDD.txt where XXX is the transmitter call sign and YYYYMMDD is the date. All times and dates are given in UTC. On each plot the blue trace represents the high frequency of the MSK modulation and the red is the low frequency.
Interested in setting up your own UltraMSK receiver? The UltraMSK system requirements section has more information.
NLK 25 September 2009
25 Sep 2009
NPM 25 September 2009
Sunspot region 1026 produced a C2 x-ray flare at 0102 UT
25 Sep 2009
NLK 25 March 2008
M1.7 solar flare starting at 1836UT from sunspot region 989
25 Mar 2008
NAA 25 March 2008
M1.7 solar flare starting at 1836UT from sunspot region 989
25 Mar 2008
NPM 25 March 2008
M1.7 solar flare starting at 1836UT from sunspot region 989
25 Mar 2008
NPM 13 December 2007
C1.7 solar flare starting at 2152UT from sunspot region 978
13 Dec 2007
NLK 2 May 2007
C8.5 solar flare at 2348UT
02 May 2007
NTS 18.6 kHz 2 May 2007
C8.5 solar flare at 2348UT
02 May 2007
NTS 18.6 kHz 28 April 2007
28 Apr 2007
NPM 27 April 2007
B6.3 solar flare at 2037UT
27 Apr 2007
NLK 27 April 2007
B6.3 solar flare at 2037UT
27 Apr 2007
NPM 24 April 2007
C2.8 solar flare at 2256UT
24 Apr 2007
NLK 24 April 2007
C2.8 solar flare at 2256UT
24 Apr 2007
NWC 24 April 2007
C2.8 solar flare at 2256UT
24 Apr 2007
NWC 11 January 2007
B9 solar flare at 0105 UT
11 Jan 2007
2006 Gallery
More UltraMSK data can be viewed in the 2006 UltraMSK Gallery.
01 Jan 2007