The TCN2-122+ from Mini Circuits is a Space Qualified RF Balun with Frequency 600 MHz to 1.2 GHz, Amplitude Balance ± 0.15 to 0.62 Db, Phase Balance 0.30 to 7.52 Degree, Insertion Loss 0.36 dB, Power 3 W. Tags: Ceramic, Unbalanced to Balanced. More details for TCN2-122+ can be seen below.