The 16th installation of Callisto at OSRA in Ondrejov, Czech Republic took place on 05.05.2010 during a measurement campaign supported by CRAF (Committee on Radio Astronomy Frequencies).
Top left: "Würzburg Riese" parabolic dish for solar observations
Top right: Configuration of CALLISTO in the laboratory Ondrejov
Bottom: Spectral overview 45 MHz - 870 MHz shows tremendous DBV-T and FM-signals with up to 50 dB above receiver noise level.
Just one small quiet gap in VHF band can be used for astronomical observations.
just a photo of the antenna:
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