Advantest R3361B Overview The Advantest model R3361B is a spectrum analyzer. Specifications: Dynamic Range: +25 dBm - -120 dBm Frequency Range: 9 kHz - 2.6 GHz Input Impedance: 50 ohm Other Features: -105 dBc/H Residual FM: Tracking G - -101 dBc/H Resolution Bandwidth: 30 Hz - 1 MHz Video Bandwidth: 1 kHz - 3.6 GHz