The TT2.5-6-X65+ from Mini Circuits is a Balun with Frequency 0.01 to 50 MHz, Insertion Loss 0.15 to 1.85 dB, Current 30 mA, Power 0.25 W, Return Loss 2.83 to 19.05 dB. Tags: Plug In, Unbalanced to Balanced. More details for TT2.5-6-X65+ can be seen below.