The 152-90 from Weinschel by Spectrum Control is a RF Variable Attenuator with Frequency 0 to 26500 MHz, Attenuation Range 0 to 110 dB, Power 100 W, Insertion Loss 0.9 to 2.98 dB. Tags: Benchtop, Programmable, Digital, Computer Controlled. More details for 152-90 can be seen below.