The NCS1-222-75+ from Mini Circuits is a Balun with Frequency 950 MHz to 2.2 GHz, Amplitude Balance ± 0.02 to 0.88 dB, Phase Balance 0.02 to 4.34 Degree, Insertion Loss 0.76 to 1.01 dB, Power 3 W. Tags: Ceramic, Unbalanced to Balanced. More details for NCS1-222-75+ can be seen below.