NHESS Natural Hazards and Earth System Sciences NHESS Nat. Hazards Earth Syst. Sci. 1684-9981 Copernicus Publications Göttingen, Germany 10.5194/nhess-10-215-2010 <i>Brief communication</i> "A pre seismic radio anomaly revealed in the area where the Abruzzo earthquake (<i>M</i>=6.3) occurred on 6 April 2009" Biagi P. F. 1 2 Castellana L. 1 Maggipinto T. 1 Loiacono D. 1 Schiavulli L. 1 Ligonzo T. 1 Fiore M. 3 Suciu E. 4 Ermini A. 5 Department of Physics, University of Bari, Via Amendola 173, 70126 Bari, Italy Inter-Department Centre for the Evaluation and Mitigation of the Volcanic and Seismic Risk, University of Bari, Via Amendola 173, Bari, Italy Elettronika s.r.l., Palo del Colle 70027, Bari, Italy Elettronika Research, Brasov, Romania Department of Mechanical Engineering, University of Roma Tor Vergata, Via di Tor Vergata, 00133 Rome, Italy 09 02 2010 10 2 215 216 Copyright: © 2010 P. F. Biagi et al. 2010 This work is licensed under the Creative Commons Attribution 3.0 Unported License. To view a copy of this licence, visit https://creativecommons.org/licenses/by/3.0/ This article is available from https://nhess.copernicus.org/articles/10/215/2010/nhess-10-215-2010.html The full text article is available as a PDF file from https://nhess.copernicus.org/articles/10/215/2010/nhess-10-215-2010.pdf

We report the information that in the days of the radio anomaly presented in the paper Biagi et al. (2009) an interruption of the broadcasting from the transmitter (RMC, France) happened. It remains unclear if the action resulted in a complete power off of the system, or in a reduction in the radiated power, and if this has affected France only, or every direction. Should a complete power off have occurred, the proposed pre-seismic defocusing is inexistent. Our doubts on this action are reported.

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