The TMO-3-1T+ from Mini Circuits is a Balun with Frequency 0.05 to 250 MHz, Insertion Loss 0.43 to 2.12 dB, Current 30 mA, Power 0.25 W, Return Loss 6.8 to 23.28 dB. Tags: Plug In, Unbalanced to Balanced. More details for TMO-3-1T+ can be seen below.