Unidentified HF frequency hopping station

(Source: Southgate ARC via Mike Hansgen)

IARUMS reports on mystery frequency hopping station

IARU-R1 Monitoring System reports an intriguing transmission has been spotted giving short beeps exactly on each second, frequency hopping between 10108-10115 kHz and 18834/18899 kHz

One of the mysterious transmitters is located in the vicinity of Chicago, near the town of Aurora or Elburn, Illinois.

The International Amateur Radio Union Monitoring System (IARUMS) Region 1 November 2018 newsletter can be read at
http://www.iarums-r1.org/iarums/news2018/news1811.pdf

Reports of Amateur Band intruders can be logged on the IARU Region 1 Monitoring System Logger at
http://peditio.net/intruder/bluechat.cgi

Monitor the short wave bands on-line with a web based SDR receiver at
http://www.websdr.org/

IARU Monitoring System (IARUMS)
https://www.iarums-r1.org/

Have any Post readers heard this station? I would love to hear a recording or see this station on a spectrum display.