A radio transmission!

Here's a breakdown of the message:

* `06:22`: The time of the transmission.

* `JH2KAG/P`: The call sign of the operator. "P" indicates that it's an amateur radio station operating portable (i.e., not from their home QTH).

* `on JP-1422(Enakyo Prefectural Nature Park, JP-GF)`: The location of the transmission. `JP-1422` is a prefix for Japan, and `Enakyo Prefectural Nature Park` is likely the specific location within that prefix. `(JP-GF)` suggests that this is also a grid square reference.

* `7042 FT8 qrt`: This part indicates that:

+ `7042` is the frequency (in kHz) of the transmission.

+ `FT8` is the mode of transmission, which is a digital protocol for amateur radio operators. FT8 stands for "Mode-FT" and is a weak-signal mode designed for propagation on long distances.

+ `qrt` indicates that the transmission is ending or has ended (i.e., "quitting radiating").

So, in summary, this message says: "JH2KAG here, transmitting FT8 from Enakyo Prefectural Nature Park, Japan, at 7042 kHz, and I'm now ending my transmission."