The 151-058-008 from Broadwave Technologies is a Power Divider with Frequency 20 to 500 MHz, Insertion Loss 1.2 dB, Isolation 20 dB, Input Power 1 W, Amplitude Balance ±0.5 dB. Tags: Module with Connectors, Reactive Power Divider. More details for 151-058-008 can be seen below.
