CTC Union BLN-4010, E1 Balun, 75 Ohm BNC Female To 120 Ohm Twisted Pair IDC, 2 Piece LotCondition:*New Surplus Stock, In OEM Packaging. As Pictured. Additional Notes:* Quantity: 2 Pieces* The BLN-4010 Device Allows Conversion of E1 Signal From Balanced To Unbalanced And Back.* BNC 75 Interface is Passively Converted To 120 Balanced Twisted Pair Copper. * BLN-4010 Converts Only One Single BNC. * Conversion Between BNC Female 75 And RJ48c Twisted Pair 120 * Low Cost And Compact Light Design* No Power Required* Connectors: One BNC Female And One Krone IDC Pin Connector* IDC Pin Assignment: PA(-), PB(+), PG(G)CTCUnionBLN-4010