The PDM-21M-4G from Crane Aerospace & Electronics is a Power Divider with Frequency 3000 to 5000 MHz, Insertion Loss 0.35 dB, Isolation 20 dB, Input Power 1 to 10 W, Amplitude Balance ±0.2 dB. Tags: Module with Connectors, Stripline Power Divider, Wilkinson Power Divider. More details for PDM-21M-4G can be seen below.
