Gas Mask Adapter (DGMA)DISCO32 Accessory Gas Mask Adapter (DGMA) Routes PTT audio through your gas mask's internal microphone, bypassing the headset boom mic. Enables clear voice transmission in CBRN and riot control environments without removing protective equipment. How It Works The DGMA inserts between your PTT and headset. The U 174 U (NATO) end plugs into your PTT, while the U 173 U (ECP) end connects to your gas mask's Electronic Communications Port. When keyed, audio