Sennheiser AM-2 Antenna Front Mount Kit 615104099128 | eBay
AM2 - Sennheiser AM2 - Audiofanzine
Sennheiser AM2 - Antenna Front Mounting Kit - Truth Seeker Productions/GearTechs.com
Sennheiser Active antenna splitter kit for eight receiver system using front-mount antennas, includes (2) ASA1/NT, (2) GA3, AM2, (2) BB1, G3FRONTKIT8 | Affinitech Inc.