The NCS4-102+ from Mini Circuits is a Space Qualified RF Balun with Frequency 700 MHz to 1 GHz, Amplitude Balance 0.5 dB, Phase Balance 5 Degree, Insertion Loss 0.9 to 1.3 dB, Power 2 W. Tags: Surface Mount, Unbalanced to Balanced. More details for NCS4-102+ can be seen below.