South African Navy w/ Saab Grintek MHF-50 MFSK modem tfc log.
2020-11-13 02:24z, 6504.0 kHz USB
Received from Toronto, Ontario Canada on RSPduo, Barker & Williamson antenna.
2021-02-01 02:28z, 6504.0 kHz USB
Received from Toronto, Ontario Canada on RSPduo, Barker & Williamson and Wellbrook loop antennae. Signal level at 02:28z is -100 dBm. Propagation is inproving, signal level at 03:40z is -88 dBm.
Further information on the MHF-50 MFSK modem can be located at
https://www.sigidwiki.com/wiki/Saab_Grintek_MHF-50_MFSK_Modem