The Roger technology uses the latest digital standard and operates on the license-free 2.4 GHz band. The wireless Roger communication system includes a transmitter and features an advanced microphone, which is used by the speaker, and a virtually invisible receiver that is hidden in the listener’s comfortable, tiny earpiece. Roger systems are ideal for people working in broadcasting and show business, who rely on seamless communication with directors, producers, and sound technicians. They are utterly discreet, easy to use and install, and offer unrivaled intelligibility.

FEATURES

• License free 2.4 GHz transmission
• Adaptive automatic frequency hopping
• Balanced audio in (XLR or 6.3)
• Audio input graphical display
• Volume control: –14 to +12 dB
• Bandwidth: 100–7200 Hz
• Transmission range: 15–40 m (depending on environment)
• Rack and wall mount included
• Weight: 488 g
• Housing dimensions: 132 x 132 x 44 mm

Here is a link for the Roger BaseStation User Guide.