SPECTRUM MONITORS
HAARP (Alaska)
HAARP spectrum monitor (1-30 MHz). Past 36 hours data.
Culgoora (Australia)
Culgoora spectrograph, IPS Radio and Space Services (18-1800 MHz). Last hour data.
Hiraiso (Japan)
Hiraiso Solar Observatory spectrograph (25-2500 MHz). Last 6 hours data.
Humain (Belgium)
SIDC Callisto spectrograph (45-387,6 MHz). Last 15 minutes data.
Noise Storms
Last solar radio bursts and storms in HF, VHF and UHF.
ABSORPTION IN THE HF BAND
HF current fading (IPS)
Current fading in the HF band caused by solar X-rays. Updated every 5 minutes.
Last fading event in HF (IPS)
Last HF fadeout event (check the date). Updated in accordance with solar activity.
NOAA DRAP2 Global
Global D-region absorption prediction. Highest affected frequency by 1 dB absorption.
NOAA DRAP2 North Pole
Highest affected frequency by 10 dB absorption.
North Pole radio paths.
NOAA DRAP2 South Pole
Highest affected frequency by 10 dB absorption.
South Pole radio paths.
IONOGRAMS
El Arenosillo (Huelva, Spain)
Latest ionogram from El Arenosillo station (INTA). Updated every 15 minutes.
Roquetes (Tarragona, Spain)
Latest ionogram from the Ebro Observatory. Updated every 2 minutes.
Digisonde Global Station List
Digisonde Global Station List, CAR, Univ. Massachussetts Lowell.
HAARP spectrum monitor (1-30 MHz). Past 36 hours data.
Culgoora spectrograph, IPS Radio and Space Services (18-1800 MHz). Last hour data.
Hiraiso Solar Observatory spectrograph (25-2500 MHz). Last 6 hours data.
Current fading in the HF band caused by solar X-rays. Updated every 5 minutes.
Last HF fadeout event (check the date). Updated in accordance with solar activity.
Global D-region absorption prediction. Highest affected frequency by 1 dB absorption.
Highest affected frequency by 10 dB absorption.
North Pole radio paths.
Highest affected frequency by 10 dB absorption.
South Pole radio paths.
Global map of F2 layer cut frequencies for NVIS. Updated every 1 hour.
Global map of the evolution of NVIS cut frequencies during the past 24 hours.
foF2 variations caused by geomagnetic activity. STORM model.
Near-real-time MUF(3000) global map. Updated every 5 minutes.
Grey line in real time. Map provided by Fourmilab (Switzerland).
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