8:1 Baluns/Ununs +3 FT400-3I, ID=3", RFI Range 1-300 MHz F400-31-1 $39.95 In stock Quantity: 1 Add to Bag Product Details MPN: F400-31 RFI Range (MHz): 1-300 MHz ID-B (in/mm): 3/76.2 OD-A (in/mm): 4/101.6 Height-C (in/mm): 1/25.4 Weight (oz/gm): 420 grams Initial permeability: 1500 Case/Box lot size: 25 Frequency (MHz)/Single turn impedance (ohms): 1MHZ:14 ohms, 5 MHz: 31 ohms, 10 MHz: 45 ohms, 25 MHz: 76 ohms (4″ OD, 3″ ID hole), available in mix 31 only Excellent for large cables or multiple cables – use multiple cores for higher choking. Also useful when you need high turns count for high choking with large cable - works on AC or DC power lines and also coax cable lines. Save this product for later Favorite