This figure is used as the back-ground image of the recent membership certificate.
Two Chinese characters written here is read from right-up to left-down "Den Shin" in Japanese pronunciation.
It means "to communicate heart (or mind)".
In same pronunciation but with another characters, there is another "Den Shin". That means "Telegraph" = CW.
See the article "Spirit of Japanese CW enthusiasts "
73! Atsu JE1TRV