NOTE: PLEASE TYPE A LONGER DESCRIPTION HERE IF NEEDED OTHERWISE JUST DELETE. IF THERE IS NOTHING TO ADD OR YOU DON'T REQUIRE ALL SECTIONS, JUST DELETE THE TEXT.
PUT EXTRA DESCRIPTIONS ON THE FREQUENCIES USED HERE. Located in NW England and found these signals on 2700KHz, 3320KHz, 4030KHz, 4790KHz, 5750KHz.
Signals in the freq ranges you specify are actually Stanag-4539 bursts in clusters as described by Antonio on his blog in this page here> http://i56578-swl.blogspot.com/2018/09/psk-8-bursts-at-inconsistent-12800bps_19.html There are a few pages on his blog that address these and the different clusters simply search on his provided block. <AT90S2323>