The SPECMON Series from Tektronix, Inc. is a RF Spectrum Analyzer with Frequency 1 Hz - 26.5 GHz, Resolution Bandwidth 0.1 Hz to 5 MHz, Real Time Bandwidth 25 MHz, 40 MHz, 85 MHz, 165 MHz, Video Bandwidth 1 Hz - 10 MHz, DANL -167 dBm/Hz. Tags: Analyzer with Screen. More details for SPECMON Series can be seen below.