The RSA6000 Series from Tektronix, Inc. is a RF Spectrum Analyzer with Frequency 9 kHz - 20 GHz, Resolution Bandwidth 0.1 Hz to 8 MHz, Real Time Bandwidth 40 MHz - 110 MHz, Video Bandwidth 1 Hz - 10 MHz, DANL -167 dBm/Hz. Tags: USB / Computer Controlled. More details for RSA6000 Series can be seen below.