It looks like you've copied a snippet of amateur radio communication data from a online propagation tool or network, likely WSJT-X or the Reverse Beacon Network (RBN).

Let's break down what this text means:

**07:52**: The time of day in 24-hour format.

**7M3DUU/P**: The callsign of an amateur radio operator. "P" typically indicates that the station is operating portable, i.e., not from a fixed location.

**on JP-1177 (Arakawa Oaso Prefectural Park, JP-ST)**: This line specifies the location and map reference point for the amateur radio station (JP-1177) in Arakawa Oaso Prefectural Park, which is presumably located in Japan (JP).

**24915.0**: The frequency in Hz at which the operator is transmitting using FT8 mode.

**FT8**: A digital mode of amateur radio operation that allows for efficient and accurate communication over long distances.

**RBN -11 dB via JI1HFJ-#[JI1HFJ-#]**: This line indicates that the Reverse Beacon Network (RBN) has detected this station's transmission and reported it to other operators. The "-11 dB" value is a measure of signal strength, with lower numbers indicating stronger signals. "via JI1HFJ-#[JI1HFJ-#]" suggests that this report was relayed through another amateur radio operator (JI1HFJ) who is acting as an intermediary or repeater for the RBN.

In summary, this text snippet contains information about a specific amateur radio station's transmission parameters and its detection by the Reverse Beacon Network.