Token has posted a YouTube video of receiving the DW Whooper at his home along with a detailed description of the beacon's characteristics.
https://youtu.be/LEKZDaD7J8g "This is a pirate beacon, probably located in the US desert south west. Some of these beacons have names, either given by the person who built / place the beacon or given by listeners who monitor the beacons, this one, at this time, is being called the "Desert Whooper", for obvious reasons. The chirps have a distinctive, and one assume intentional, non-linear chirp, or "whoop", and the CW ID is "DW". This beacon was first reported on the associated forums on HFUnderground in November, 2020. It is assumed that it started operations about the same time.
The frequency of this beacon is 4095.6 kHz, and it consists of a series of chirpy CW dashes, or short, frequency chirping, duration carriers. Each dash shifts downwards in frequency by about 600 Hz from start to stop. A "cycle" for this beacon has a CW ID consisting of the letters "DW", followed by 22 chirping dashes, the first dash after the CW ID is slightly longer than the other dashes. As far as I know, whoever placed this beacon has not yet released any details of its hardware.
Two other pirate beacons are seen in this video, a new and as yet unnamed beacon on 4097.2 kHz consisting of 2 second long flat chirps, and the long active Windy beacon in a failed mode.
Recorded at my location in the Mojave Desert of California, USA, on 26 November, 2020, 2353 UTC."
He has lots of neat beacons and other signals on videos which are available at his channel
https://www.youtube.com/user/FirstToken/videoshttps://www.youtube.com/user/FirstToken/videos