It appears you've shared a message from a ham radio operator's log. Let me break down the details:

* `09:41`: Time of the transmission.

* `JH1HST`: The call sign of the transmitting amateur radio station, which belongs to an individual identified as "JH" (Japan) and "1" (first license holder in that area).

* `JP-1174`: The reference for the location where the transmission was made, likely a park or other geographic point with an assigned identifier.

* `Kawagoe Prefectural Park`: The specific park in Japan where this transmission took place.

* `JP-ST`: A shorthand for "Japan" and "Saitama" (prefecture), indicating that the transmission originated from Saitama prefecture.

* `3521.5 CW cw[JH1HST]`: This is the actual transmission data, likely a Morse code message encoded at 3521.5 kHz frequency. The `[JH1HST]` part suggests this was a transmission by JH1HST back to themselves or as an identifier.

Please note that ham radio transmissions are usually encrypted and decoded into readable messages using specialized software. If you have any specific interest in decoding the message (assuming it's not a simple "CQ CQ" - call sign query), I'd be happy to help with tools for Morse code decryption. However, without more context or clearer instructions on what the transmission is supposed to mean, it's challenging to proceed further than this analysis of the given information.