The LPT-3000RX4-DNC-30000 from LP Technologies is a RF Spectrum Analyzer with Frequency 9 KHz to 30 GHz, Attenuation Range 50 dB, AC Supply 100 to 240 Vac, Sweep Time 50 us to 1000 sec. Tags: USB / Computer Controlled. More details for LPT-3000RX4-DNC-30000 can be seen below.