The 3404-70 from Weinschel by Spectrum Control is a RF Variable Attenuator with Frequency DC to 6 GHz, Attenuation Range 70 dB, Attenuation Step 10 dB, Power 180 W, Insertion Loss 3.5 dB. Tags: Benchtop, Programmable, Digital, USB Controlled, Computer Controlled. More details for 3404-70 can be seen below.