Unscheduled broadcast of Trans World Radio Africa on July 17

SWAZILAND   Unscheduled broadcast of TWR Africa on July 17
1800-1830 on 11700*MAN 100 kW / 013 deg to EaAf unknown language, Sunday only?
* blocked on 11700 SCB 100 kW / 195 deg to WeAf English Radio Biafra from 1825