Please note that we have already upgraded the software. If the software and driver in the CD does not work properly, please download the newest version: http://s3.amazonaws.com/UV-82L/UV82L-DRIVER%2BSOFTWARE.zip This radio has upped the bar on ham radio technology! Compared to previous Baofeng products (UV-5R and the UV-B Series) this radio comes with a much louder speaker (1 watt!), a more solid design, larger buttons, and a better antenna. This radio can be programmed with or without a PC to also work on private repeater systems. (Save thousands compared to a Motorola / Kenwood setup). Product Features: 25KHz/12.5KHz Switchable. Large LCD Display. LED Flashlight. High /Low RF Power Switchable Voice companding 50 CTCSS/ 104DCS coder and tone searching - dual standby. PC programmable. Wide/Narrow Band (25kHz/12.5kHz). Transmitter time-out timer (TOT). High/Low TX power selectable. Busy channel lock-out (BCLO). Specifications: General Frequency Range: 136-174 & 400-520 MHz Channel Memories: 128. Frequency Stability: ±2.5ppm. Antenna: High gain DualBand antenna. Antenna Impedance: 50Ω. Operating Voltage: DC 7.4V. Mode of operation: Simple or semi-duplex. Antenna: SMA -Female. Earpiece/mic type: Kenwood Plug type. Dimension(W x H x D): 132 x 60 x 35 mm (not included antenna). Weight: 238g (including battery, antenna). Power adapter: Input: AC100-240V, 50-60Hz;Output: DC10V/500mA; Plug Type: US. Transmitter: Output power: 5W / 1W (Max 5W). Maximum deviation: 5kHz (Wide) / 2.5kHz (Narrow).