All India Radio expanded its information on digital medium wave at https://prasarbharati.gov.in/drm-digital-radio-of-air in February 2021.
https://prasarbharati.gov.in/drm-digital-radio-of-air#1603620010167-2ec2d6be-f473 provides a list of 33 DRM locations. All have links to coverage maps that are dated September 2020 (size approx. 1-2 MB). Four links are not working: Chennai 783 kHz, Delhi 1368 kHz, Guwahati 1026 kHz, and Rajkot 1071 kHz.
Dr. Hansjörg Biener (2021-02-11)