The FCKL 1528 from Schwarzbeck Mess - Elektronik OHG is a RF Spectrum Analyzer with Frequency 9 kHz to 30 MHz, Attenuation Range 0 to 30 dB, AC Supply 110 to 240 VAC, Storage Temperature -20 to 70 Degree C, Operating Temperature 0 to 50 Degree C. Tags: USB / Computer Controlled. More details for FCKL 1528 can be seen below.