RF Explorer 6G (4.85GHz-6.1GHz only), Can be Extended to 6G Combo Range, Handheld Range Spectrum Analyzer with Aluminium Case Frequency band: 4.85GHz-6.1GHz;Amplitude resolution: 0.5dBm; Dynamic range -105dBm to -15dBm Backlight for great indoor visibility; Graphics LCD 128x64 pixels, great visibility outdoors PC Windows client supports Windows XP/Vista/Win7;Resolution bandwidth (RBW): automatic 58Khz to 812K Audio Analysis by means of an acoustic signal proportional to the modulation frequency Average noise level (typical): -105dBm; Frequency resolution: 1Khz; Dynamic range -105dBm to -15dBm