Hi !
8918 kHz is also a Regional RDARA frequency for Region 6C which is:
"Sub-Area 6C.
From the point 20°N 130°E, through the point 04°N 130°E, to 04°N 118°E. Thence along the
border between North Borneo and Indonesian Borneo to the point 03°N 109°E, and through the points
03°N 106°E, 10°S 106°E, 10°S 141°E, 00° 141°E, 00° 170°W, 10°N 170°W, 20°N 176°W, to 20°N 130°E."
So Ambon could be possible.
73,
Patrick