According to announcements heard on the station, AIR Kolkata B Sanchayita Channel  (100 kW) will be back to DRM Simulcast mode as follows from tomorrow 14 November 2022.

AM Mode 1008 kHz
DRM Simulcast Mode 999 kHz

Many thanks to Rajarshi Roy, Kolkata, West Bengal, India for the tip.

For a long time they have been operating in Pure DRM Mode on 1008 kHz. Before that they were on  Simulcat Cast Mode, AM Mode.

Jose Jacob to dxindia iog (2022-11-13)