It appears to be a log entry from a amateur radio operator. Here's a breakdown of the information:

* `08:39`: The time of the log entry.

* `JR1WVU/1`: The callsign of the operator, followed by `/1`, indicating that they are operating with 1 kW power output.

* `on JP-1195(Kashiwa no Ha Prefectural Park, JP-CH)`: The location where the operator is transmitting. `JP` indicates Japan and `1195` is a specific grid square in the WGS84 coordinate system. The park name suggests that the operator is using a fixed antenna in a park.

* `18071 CW CW`: The frequency on which the operator is operating (17,071 kHz) and the mode of transmission (`CW`, or continuous wave radio).

* `JCC1217[JR1WVU]`: This appears to be a log entry reference number, possibly generated by a logging software or application. The `[JR1WVU]` part may indicate that this is a specific entry for the operator's callsign.

In summary, this log entry indicates that an amateur radio operator (JR1WVU) with 1 kW power output is transmitting on 17,071 kHz CW from Kashiwa no Ha Prefectural Park in Japan at 08:39.