ATW-901A/H

The ATW‑901A/H is part of Audio‑Technica’s System 9 wireless range. It is a VHF wireless system configured in the headworn format (body‑pack transmitter + headworn mic + receiver). The receiver is a single‑channel non‑diversity unit, and the transmitter is a belt‑pack that works with the included PRO 8HEcW headworn microphone. The system is designed for live sound reinforcement, presentations, performance, etc.

Key Features

• Operating frequency band: approx. 169.505 MHz to 171.905 MHz (four selectable channels: 169.505, 170.245, 171.045, 171.905 MHz)

• Balanced XLR output + unbalanced ¼″ (6.3 mm) output on the receiver — allowing connection to a wide range of audio gear

• “Dipole” dual‑antenna design on the receiver to extend operating range by providing a ground element along with signal element

• Squelch control on receiver — helps to mute the audio output when RF signal drops below threshold (reducing noise)

• Body‑pack transmitter: powered by two AA batteries (alkaline) and includes microphone/instrument trim controls plus channel selection switches