... Resolution : Minimum 1 Hz Compact and lightweight package Pre Amp as standard Wide Input Dynamic Range : -130 dBm ~ ... dBm ~ -105 dBm, +20 dBm ~ -130 dBm(Pre Amp ON)Average Noise Level (1kHz RBW, 10Hz VBW)≤-105 dBm150 ... kHz ~ 2.7 GHz ≤-127 dBm(Pre Amp On) 20 MHz ~ 2.7 GHz≤-100 dBm, ... -123 dBm(Pre Amp On) 2.7 GHz ~ 3 GHz≤-130dBm(Pre Amp On) ; TypicallyAmplitude UnitdBm, dBmV, ...