The 3-A from Bird is a Fixed Attenuator with Frequency DC to 4 GHz, Attenuation 3, 6, 10, 20, 30 dB, Power 3 W, Weight 3.1 oz, 88 g, 0.088 Kg, Operating Temperature -40 to 40 Degree C. Tags: Module with Connectors. More details for 3-A can be seen below.