ADX2FD/B87A, like all ADX transmitters, sets the stage for exceptional performance, with wide tuning up to 184 MHz, interference protection, advanced rechargeability, streamlined design, and ShowLink remote control for real-time parameter adjustments right from the booth.Main Features: Ability to transmit RF signal on two discrete carriers Optional 50mW High Power mode for driving increased power on a single frequency Durable, moisture-resistant, lightweight metal case Available in black or nickel finish Up to 6.5 hours of runtime with SB920 rechargeable batteries when transmitting on two RF carriers, up to 9 hours battery life when transmitting on a single RF carrier. External contacts for docked charging with optional fully covered radome Diversity ShowLink enabled for remote transmitter control and automatic interference avoidance Two transmission modes: Standard for optimal coverage and new High Density for maximum system channel count and robust coverage Encryption-enabled, secure transmissionSpecifications: Mic Offset Range: 12 to 21 dB (in 3 dB steps) Battery Type: Shure SB920 Rechargeable Li-IonBattery Runtime @ 10 mW: Single Carrier Mode: Up to 9 hours Frequency Diversity: Up to 6.5 hours Dimensions: 254 mm 51 mm (10.0 in. 2.0 in.) L Dia. Weight: 179 g (6.3 oz.), without battery Housing: Cast AluminumAudio Input: Configuration: Unbalanced Maximum Input Level (1 kHz at 1% THD): 145 dB SPL, typical (SM58) Note: dependent on microphone typeRF Output: Antenna Type: Integrated Dual-Band Helical Occupied Bandwidth: <200 kHzChannel-to-Channel Spacing: Standard Mode: 350 kHz High-Density Mode: 125 kHz Modulation Type: Shure Axient Digital ProprietaryPower: Single Carrier Mode: 2 mW, 10 mW, 20 mW, 50 mW Frequency Diversity Mode: 2 20 mWShowLink: Network Type: IEEE 802.15.4 Antenna Type: ZigBee Dual Conformal Frequency Range: 2.40 to 2.4835 GHz (24 Channels) RF Output Power: 10 dBm (ERP)