The PDK-21-15.5G SQ from Crane Aerospace & Electronics is a Power Divider with Frequency 12000 to 19000 MHz, Insertion Loss 1 dB, Isolation 18 dB, Input Power 5 W, Amplitude Balance ±0.25 dB. Tags: Module with Connectors, Wilkinson Power Divider. More details for PDK-21-15.5G SQ can be seen below.