The DHX packs the tools for the pro. The DHX has Auto Scan, where it will search for an available frequency to use and then IR Sync the frequency to a transmitter. The large LCD display shows channel number, frequency, lock mode and volume output. The DHX receiver has an easy to read RF and AF indicator. The UHF diversity antennas ensure quality operation. The DHX works great with any 77 or 65 Series transmitter. 300 Range Auto Scan 120 Selectable UHF Frequencies Diversity Antennas Single/Dual Rack Kit Included - DHXR Receiver - LCD Display IR Sync Receiver to Transmitter Frequency with Channel and Group Selector AF/RF Indicators Tone-key Squelch Squelch Adjustment XLR/1/4" Output Detachable BNC Antennas Metal Chassis - MBP77 Transmitter - LCD Display 3 Bar Battery Life Indicator Channel Selector On / Off / Mute Button IR Sync Transmitter to Receiver Mic/0/-10dB 10 mW Manually Set Frequency Works with WMC-CGR Charger Station Operated on 2 AA Batteries (up to 6 hours Alkaline) - HS-U3BK Microphone - This uni-directional headset comes standard with the ECM, PSE, TRC, DHT, DHX, CTS & Traveler Headset Systems. Its comfortable wrap around design goes over both ears and helps ensure that this mic will stay in place. The HS-U3BK can be wired to work with transm