The 2-3487-15A from ARRA Inc. is a RF Variable Attenuator with Frequency 925 MHz to 1.225 GHz, Attenuation Range 15 dB, Attenuation Accuracy ±0.5 dB, Power 50 W, Insertion Loss 0.5 dB. Tags: Module with Connectors, Rotary, Continuously Variable. More details for 2-3487-15A can be seen below.