The TC9-1-75+ from Mini Circuits is a Balun with Frequency 0.3 to 475 MHz, Insertion Loss 0.29 to 1.40 dB, Current 30 mA, Power 0.25 W, Return Loss 7.44 to 23.86 dB. Tags: Surface Mount, Unbalanced to Unbalanced. More details for TC9-1-75+ can be seen below.