This appears to be a transmission report from a amateur radio operator using the call sign "JP1WAN" in Japan.

Here's a breakdown of what each part of the message means:

* `02:45`: The time of day (02 hours and 45 minutes) that the transmission was made.

* `JP1WAN on JP-1310(Chigasaki Satoyama Prefectural Park, JP-KN)`: This is the operator's location. `JP` indicates Japan, `JP-1310` is a specific geographic area within Japan ( Chigasaki Satoyama Prefectural Park), and `JP-KN` likely refers to Kanagawa prefecture.

* `144460.0 FT8 RBN`: The transmission frequency (in MHz) and mode being used:

+ 14,446,000 kHz = 144.460 MHz

+ `FT8` is a digital amateur radio protocol for efficient communication on VHF bands.

+ `RBN` stands for Reverse Beacon Network, which allows the operator to share their transmission with other stations in real-time.

* `14 dB via JI1HFJ-#[JI1HFJ-#]`: This line indicates the signal strength (14 decibels) and the "via" station, which is likely a nearby repeater or station that helped relay the signal. The `#[JI1HFJ-#]` part may be a reference to another amateur radio operator or station.

If you're an amateur radio enthusiast, this message might be of interest! If not, please let me know if there's anything else I can help with.