Feature Benefit SWR Calibration Allows calibration of antenna system for maximum performance. 9 Foot Microphone Cord For easy reach within any area of the vehicle. Front Microphone Connector Allows convenient installation to be in dash or under dash. Adjustable Dynamike Boost Dynamically boosts microphone for increased voice clarity. Tactile Controls Allows you to actually feel where the dial is in it's rotation without taking your eyes off the road. PA Capability Use CB radio as a Public Address System with PA speaker. Receive signals can also be monitored through PA. RF Gain Adjusts receive gain in weak and strong signal areas. Switchable Noise Blanker For increased noise reduction. Dimmer Control Adjusts brightness of the front panel, channel display and signal strength meter. 4 Watts AM RF Power Output The maximum allowed by law. Antenna Warning Indicator Illuminates when antenna needs checking. Instant Channel 9 Instant access to emergency channel 9 Delta Tune Used to clarify incoming signals.