A interesting message!

It looks like a amateur radio transmission log entry. Here's what I can decipher:

* `01:26`: The timestamp of the transmission.
* `JR4HDU/P`: The callsign of the transmitting station, which is a Japanese amateur radio operator's identifier. The `/P` at the end indicates that this is a personal station.
* `on JP-1160(Ageo Undo Prefectural Park, JP-ST)`: This is the location information. It appears to be a park in Japan, specifically Ageo Undo Prefectural Park, which is located in Saitama Prefecture (JP-ST).
* `10136 FT8`: The transmission details. Here's what I think it means:
	+ `10136`: The frequency of the transmission, measured in Hertz (Hz). This is likely a VHF or UHF frequency.
	+ `FT8`: The mode of the transmission, which stands for "Flex" (a software-defined radio technology) and "8" (the modulation scheme used). FT8 is a digital amateur radio protocol that allows for efficient QSOs (contacts).

So, in summary, this log entry suggests that an amateur radio operator with the callsign JR4HDU/P transmitted a signal on frequency 10136 Hz from Ageo Undo Prefectural Park, Saitama Prefecture, Japan, using the FT8 mode.