The 500-F205 from RH Laboratories is a RF Variable Attenuator with Frequency 6 to 18 GHz, Attenuation Step 1 dB, Attenuation Accuracy ±0.3 dB, ±0.5 dB (Flatness), Power 100 mW, Insertion Loss 3 dB. Tags: Module with Connectors, Digital. More details for 500-F205 can be seen below.