The RBL-2012-G9D4-TR from Raltron is a Balun with Frequency 0.88 to 0.96 GHz, Amplitude Balance ±1 dB, Phase Balance ±10 Degree, Phase_Shift 180 Degree, Insertion Loss 1.3 dB. Tags: Surface Mount, Balanced to Balanced. More details for RBL-2012-G9D4-TR can be seen below.