The ending song of an anime television series called Le Eden de la Grisaia here has a light flashing. I suspect it may be Morse Code. By watching the video a little more slowly than usual (frame by frame), it's easy to see that

  • dit is 2 frames
  • dah is 6 frames
  • intra-character gap is 2 frames
  • gap between characters is 6 frames
  • gap between words is 14 frames

So it probably is Morse Code.

I've managed to translate it into letters. Here's my recording of the transmission. - means the light is on. means the light is off.

At the beginning:

--- - --- - --- --- - ---       --- - --- - --- --- - ---       --- --- -   -       -   --- - -   -   --- -

Which is "CQ CQ GE EDEN". Notice there is only 1 dit's time between "C" and "Q".

And at around 1:25:

--- - -       --- - -

Which is "DD".

I haven't used Morse Code before, so I don't know what these letters mean. What do they mean?


Thanks to to a comment by Phil Frost. The TV show is Japanese. I looked up the Japanese equivalent of Morse Code, Wabun Code. If it's in Wabun Code, the transmission would be

リヘ ヘホヘタ



Unfortunately, I don't know Japanese. So if anyone who sees this happens to know Japanese, please tell me whether the above makes any sense. Googling yielded no results.

  • $\begingroup$ "GE" instead of "DE", and the "DD" at the end makes me suspect this is either some Japanese convention I don't know, or just the Morse code equivalent of Engrish. $\endgroup$ – Phil Frost - W8II Jun 28 '17 at 14:44
  • $\begingroup$ @Phil, you never cease to amaze me. I have worked Japan on CW hundreds of times and they stick to the format pretty well. Never considered that they have their own alphabet. $\endgroup$ – SDsolar Jun 29 '17 at 2:44
  • $\begingroup$ @PhilFrost Please see my edit. "DE" would make more sense, but I checked that I didn't mistakenly copy "DE" into "GE". $\endgroup$ – pj-yn9aq Jun 29 '17 at 2:47

CQ is common in amateur radio (not just morse) as a way to initiate communications. It basically means "anyone who can hear this, please respond if you want to talk".

GE could maybe be a typo of DE (-..), which is used in morse and text-based communications to mean "this is" or "from" and usually precedes the callsign of the person sending.

Not sure about DD.

  • $\begingroup$ Does "CQ" usually have 1 or 3 dits' blank between "C" and "Q"? I checked again. "GE" is correct. $\endgroup$ – pj-yn9aq Jun 28 '17 at 11:44
  • $\begingroup$ I'm not a morse user myself, but I believe it should have the normal gap between letters, but again, it could quite easily be an error. $\endgroup$ – Muzer M0SWT Jun 28 '17 at 12:30
  • $\begingroup$ DD is probably something like a producer's initials. I have to laugh when I watch "Last Man Standing" how much ham gear they have. If you can get away with it, why not show it off. And since it is not transmitted through ham bands there is no reason for an ID like we use. It is someone's equivalent to "Sit, Ubu, sit" is my quess. $\endgroup$ – SDsolar Jun 29 '17 at 2:46

Perhaps "GE" means "good evening"!

  • $\begingroup$ Eden is in the show title, so maybe it is calling anyone to say Good Evening Eden. (Although I would use QRZ even in Morse for that) $\endgroup$ – SDsolar Jun 29 '17 at 2:47

"CQ CQ DE EDEN" would make perfect sense, meaning "This is Eden calling anyone." Though I'm not sure why a submarine would flash that on a signal lamp while submerged. "GE EDEN" must be a mistake.

I've no idea what "DD" at the end means. It could be Wabun code. Or it could be someone's initials or similar of significance to the show's creators. Or perhaps an obscure reference to something in the show. Or, another mistake.


A long time ago I lived in Japan for 2 years. I still can speak enough Japanese to hold a conversation. This seems to be just gibberish. It actually sound more like something real in English than Japanese, at least to me. Using online translators also yielded no results.


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