Strong unmodulated carriers on 9390, 9825, 12100 kHz, March 27/29

UNKNOWN   Strong unmodulated carriers on March 27/29
0600-0632 on  9825 unknown tx / unknown, not WHRI Angel 2
0700-0714 on 12100 unknown tx / unknown, plus test tone
0900-0911 on  9390 unknown tx / unknown, test BIB/TAC/UDO