The 8329-300 from Bird is a Fixed Attenuator with Frequency DC to 500 MHz, Attenuation 30 dB, Power 4 KW continuous with blower on, 1000 W with blower off, Weight 32 kg (70-1/2 lbs.), Attenuation Accuracy +/- 0.5 dB. Tags: Module with Connectors. More details for 8329-300 can be seen below.