It looks like you've shared a radio frequency listing!

Here's what I can decipher from the text:

* `09:59` is the time.

* `JA9IAX/1` appears to be the amateur radio station calling sign, using the Japanese amateur radio prefix "JA".

+ `/1` might indicate that the station is operating on a specific frequency or mode (1 = 144-146 MHz FM in this context).

* `on JP-1249(Hikarigaoka Prefectural Park, JP-TK)` suggests that the station is transmitting from a location within Japan, specifically from Hikarigaoka Prefectural Park (JP-TK being the IARU reference for Tokyo metropolitan area).

* `145240 FM` indicates the frequency and mode used by JA9IAX:

+ `145.24` MHz is the frequency.

+ `FM` stands for Frequency Modulation.

So, in summary: JA9IAX was transmitting on 145.24 MHz FM from Hikarigaoka Prefectural Park at 09:59 (Japan time).