No. 82: Jul-Aug 1992
Y-H. Ohtsuki, a physicist at the Waseda University, Tokyo, reports (in pretty good English):
"A large circle appeared in the doublyfenced compound of a Radio Nippon transmitting station near Tokyo. At the same time the survey protection equipment of the transmitting system worked abnormally. This shows that the circles effect is not simply a matter of hoaxing.
It was the night of 31 August 1991 when the survey protection equipment (electromagnetic-noise warning detector) of the transmitting system of the Radio Nippon station in Kisarazu, Chiba prefecture, worked seventeen times during 40 minutes from 2.00 a.m. (that is, on 1 September). This is a wholly abnormal occurrence because the survey protection goes off only once a week on average.
Next morning one of the staff discovered a 10-metre circle in the doubly-fenced ground of the Radio Nippon station. The grass in the ground was pushed down, but without leaving a clear spiral mark. The ground area is approximately 20,000 m2 , and three antenna towers are located in the ground. The fences are formed by 2.5-m-high wire netting and the station was watching for 24 hours. There were only two men in the station, and they were in a watching room for eight hours from 10.00 p.m. to 6.00 a.m.. Moreover, I can add that neither of the men had ever heard of the circles effect at that time, so that after the discovery of the grass circle the next day they did not report it for 40 days. By the way, there are no roads or railway which a hoaxer could have used to approach by car or train."
(Ohtsuki, Yoshi-Hiko; "An Example of the Circles Effect Which Appeared in a Well-Protected, Fenced Compound in Japan," Journal of Meteorology, U.K., 17:115, 1992.)