The Physics Club of Kaisei Gakuen (Kaisei Junior High School and the Kaisei High School) has been having an Amateur Radio Club Station JA1YSD "Penken Club". Some members of this club, who enrolled in Kaisei Junior High School in 1968, had established another Amateur Radio Club Station JH1YGS "Space HAM Club", in order to make stronger friendship with students in the same year.
The other members JH1XMM, JR1MTF, JR1MUT, JE1BME, JE1BQE, JE1FZD, JE1IXC, JE1SUF and JF1FZI, who enrolled in the Kaisei Junior High School in 1969, applied the 3rd Amateur Radio Club Station JH1YTU "Snoopy Club" at the house of JE1BQE located in Ueno, Tokyo in July of 1971. The JH1YTU members were very happy to get this callsign, because of YTU (Young Town Ueno).
