The TCML1-19+ from Mini Circuits is a Balun with Frequency 800 MHz to 1.9 GHz, Insertion Loss 0.13 to 1.22 dB, Current 30 mA, Power 0.25 W, Return Loss 5.94 to 20.13 dB. Tags: Surface Mount, Balanced to Balanced. More details for TCML1-19+ can be seen below.