The Cobra 148GTL is a serious 40 channel SSB-Single Sideband CB radio that is loaded features. The dynamike boost and 12 watts of SSB RF power combine to give you the maximum legal range. And the dual conversion receiver means you will be able to hear them. You also get an RF Gain control, Automatic Noise Limiter, Switchable Noise Blanker and 3 position Tone Switch. Other refinements include: Illuminated S/RF/SWR meter, Dimmer, two color RX/TX LED and front panel mic connection. This is a beefy radio geared towards the professional user.