51500 serves as the talkgroup of MOARC, INC. — Mindanao Organization of Amateur Radio Communicators, Inc. (DX8WMG), which is an affiliated club of the Philippine Amateur Radio Association (PARA). It is duly registered with the Securities and Exchange Commission (SEC) and accredited by the National Telecommunications Commission (NTC).

Mindanao Organization of Amateur Radio Communicators, Inc. (DX8WMG) was founded in 2020 (renamed in 2026). Members of this group enjoy using analog and digital voice transmissions and encourage and support their members to utilize different modes, whether they're analog or digital (FM, DMR, C4FM, M17, etc.).