Audio-Technica ATW-A3 Half-Wave UHF Antennae Pair Band D Green Replacement Antennnae for AudioTechnica 3000 Wireless Systems The ATW-A3D Wireless Antennae pair are direct replacements for Audio-Technica 3000 series wireless systems The ATW-A3D Half-wave Antennae have a UHF frequency range of 655-680 MHz and feature BNC connectors The ATW-A3D Wireless Antennae pair are direct replacements for Audio-Technica 3000 series wireless systems The ATW-A3D Half-wave Antennae have a UHF frequency range of 655-680 MHz and feature BNC connectors