The Original 148 GTL is back... and better than ever! Professional driver-requested improvements include a front panel microphone connector for convenient in-dash installation, 9-foot microphone cord for easy reach anywhere within the cab, and tactile controls for added convenience and safety when adjusting functions. 40 AM & 80 SSB CHANNELS 4W AM & 12W SSB RF GAIN ADJUSTS RECEIVE GAIN IN WEAK & STRONG SIGNAL AREAS SWITCHABLE ANL/NB FOR INCREASED NOISE REDUCTION ADJUSTABLE DYNAMIC BOOST KICKS-UP MICROPHONE FOR INCREASED VOICE CLARITY SWR CALIBRATION OF ANTENNA SYSTEM FOR MAXIMUM PERFORMANCE 9-FT MICROPHONE CORD DIMMER CONTROL ADJUSTS BRIGHTNESS OF FRONT PANEL, CHANNEL DISPLAY & SIGNAL STRENGTH METER TACTILE CONTROL & 3-POSITION TONE CONTROL USE AS PUBLIC ADDRESS SYSTEM WHEN USED WITH PA SPEAKER FRONT MICROPHONE CONNECTOR ALLOWS INSTALLATION IN OR UNDER DASH