The high-power, high-frequency (HF) ionospheric radio facility in Tromsø, Norway is used to conduct fundamental research in plasma physics, ionospheric physics, and geophysics. This facility is making possible new discoveries in the fields of space plasma physics and upper atmospheric physics. Built by the Max-Planck Institut fur Aeronomie and inaugurated on September 12, 1980, it was purposely located next to the European Incoherent Scatter Scientific Association (EISCAT) incoherent scatter radars at 931 MHz and 224 MHz. These are the primary diagnostic instruments of the perturbations produced in the ionospheric plasma by the powerful HF radio waves [Rietveld et al., 1993].
If you can't find a tool you're looking for, please click the link at the top of the page to "Go to old article view". Alternatively, view our Knowledge Base articles for additional help. Your feedback is important to us, so please let us know if you have comments or ideas for improvement.