{"product_id":"61mm-ferrite-toroid-core-pack-for-ham-radio-gear-2","title":"61mm Ferrite Toroid Core Pack For Ham Radio Gear, 2 Pieces, Toroidal Ring 2.40 Inch OD X 1.40 Inch ID X 0.50 Inch Thick, Great For Balun Unun, Common Mode Choke EMI RFI Noise Filter, HF Antenna Solar Inverter","description":"\u003cdiv\u003e61mm Ferrite Toroid Core Pack for Ham Radio - 2pcs\u003cbr\u003e\n✔️ OD 2.40 in (61.0 mm) ID 1.40 in (35 mm) Ht 0.50 in (12.7 mm) AL ≈ 6800 nH\/N² \u003cp\u003eThese precision ferrite toroid cores come as a 2-piece pack, ideal for building baluns, common-mode chokes, and EMI\/RFI filters in ham radio gear, HF antennas, and related power or data lines.\u003c\/p\u003e ✅ 2 pieces per pack\u003cbr\u003e\n✅ OD 2.40 in (61.0 mm) and ID 1.40 in (35 mm), height 0.50 in (12.7 mm)\u003cbr\u003e\n✅ AL ≈ 6800 nH\/N² (1 kHz, 0.3V, 20Ts) tested\u003cbr\u003e\n✅ Uncoated ferrite core with smooth edges, ready for winding\u003cbr\u003e\n✅ Works with standard coax (RG58\/RG8X) and magnet wire windings\u003cbr\u003e\n✅ Tested for 9:1 unun \u0026amp; HF choke builds; EMI suppression in multiple setups\u003cbr\u003e \u003cp\u003e💡 What is a 61mm ferrite toroid core pack used for in RF filtering and EMI suppression?\u003c\/p\u003e\n\u003cp\u003eThis handy explanation shows why it's a handy choice for RF work.\u003c\/p\u003e\n1. handy for HF balun and unun builds in ham radio projects\u003cbr\u003e\n2. effective for common-mode chokes that reduce EMI on solar inverters and USB cables\u003cbr\u003e\n3. works with standard coax winding patterns for easy DIY projects\u003cbr\u003e\n4. two-piece pack provides flexible options for multiple winding configurations\u003cbr\u003e\n✝️\u003c\/div\u003e","brand":"Amazon","offers":[{"title":"Default Title","offer_id":48930847949035,"sku":"VXB0BXW29GNF","price":60.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0662\/3268\/0683\/files\/61UKj8bcHEL.jpg?v=1782357878","url":"https:\/\/vxb.com\/products\/61mm-ferrite-toroid-core-pack-for-ham-radio-gear-2","provider":"VXB Bearings","version":"1.0","type":"link"}