It looks like you're sharing a ham radio transmission!

Here's a breakdown of the message:

* "05:12" is the timestamp of the transmission
* "JJ1SWI" is the callsign (identifier) of the transmitting station, which is a amateur radio operator located in Japan
* "JP-1282" refers to the Japanese prefecture and location of the transmission: Musashi Kokubunji Prefectural Park (JP-TK)
* "7008.0" is the frequency (in Hz) being used for the transmission
* "CW" stands for Continuous Wave, which indicates that this is a Morse code transmission (a type of radio communication using dots and dashes to transmit text)
* "[JJ1SWI]" is a square bracket notation indicating the end of the transmission.

In summary, JJ1SWI is transmitting a Morse code message on frequency 7008.0 Hz from Musashi Kokubunji Prefectural Park in Japan!