---
product_id: 527831477
title: "61mm Ferrite Toroid Core 2pcs, 2.4\"x1.4\"x0.5\" Toroidal Ring for Ham Radio Balun Unun, Common Mode Choke EMI RFI Noise Filter, HF Antenna Solar Inverter"
brand: "taigoehua"
price: "NZ$65"
currency: NZD
in_stock: true
category: "Taigoehua"
url: https://www.desertcart.nz/products/527831477-61mm-ferrite-toroid-core-2pcs-2-4x1-4x0-5-toroidal
store_origin: NZ
region: New Zealand
---

# High AL value ~6800nH/N² for superior inductance Precision 61mm OD with ±0.5mm tolerance Effective EMI/RFI noise suppression across multiple devices 61mm Ferrite Toroid Core 2pcs, 2.4"x1.4"x0.5" Toroidal Ring for Ham Radio Balun Unun, Common Mode Choke EMI RFI Noise Filter, HF Antenna Solar Inverter

**Brand:** taigoehua
**Price:** NZ$65
**Availability:** ✅ In Stock

## Summary

> 🛡️ Shield your signals, silence the noise — the pro’s choice for clean RF!

## Quick Answers

- **What is this?** 61mm Ferrite Toroid Core 2pcs, 2.4"x1.4"x0.5" Toroidal Ring for Ham Radio Balun Unun, Common Mode Choke EMI RFI Noise Filter, HF Antenna Solar Inverter by taigoehua
- **How much does it cost?** NZ$65 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.nz](https://www.desertcart.nz/products/527831477-61mm-ferrite-toroid-core-2pcs-2-4x1-4x0-5-toroidal)

## Best For

- taigoehua enthusiasts

## Why This Product

- Trusted taigoehua brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Ready-to-Wind Smooth Core:** Smooth edges with no burrs, perfect for quick, hassle-free coil winding
- • **Proven HF Band Performance:** Tested 9:1 Unun & common mode choke for clean impedance matching
- • **Multi-Device EMI/RFI Filter:** Field-verified to reduce interference on solar inverters, coax, USB, and power lines
- • **Precision Engineered Dimensions:** Exact 2.4" OD × 1.4" ID × 0.5" height for consistent performance
- • **Quality Assured & Securely Packed:** Individually checked and packed to ensure flawless magnetic properties on arrival

## Overview

This 61mm ferrite toroid core set delivers precision dimensions and a high inductance factor (~6800nH/N²) ideal for HF antenna baluns, common mode chokes, and EMI/RFI noise filtering. Tested and trusted for reducing interference in ham radios, solar inverters, and various signal cables, it offers a smooth, burr-free surface ready for winding. Each pair is quality-checked and securely packed, ensuring reliable performance for professional-grade RF and electronic noise suppression.

## Description

Ferrite Toroid Core OD= 2.40 in / 61.0 mm ID= 1.40 in / 35mm Ht = 0.50 in / 12.7 mm AL=6800±25﹪nH/N2（TESTING METHOD：f=1KHz,U=0.3V,25±3℃,N=20Ts） The magnetic ring can play a very good anti-interference effect, it can prevent the display signal from intruding into the equipment and other problems. Suitable for all kinds of electronic equipment and wire/ power cord/platoon line/data line/signal line/USB line/AC line/DC line/audio line/ cable/ connection line/digital camera line and more.

## Features

- 【Precision 61mm Ferrite Toroid Core — 2pcs per Pack】 OD 2.40"(61mm) × ID 1.40"(35mm) × H 0.50"(12.7mm). Uncoated ferrite core, ±0.5mm dimensional tolerance. AL ≈ 6800nH/N² ±25% (tested at 1kHz, 0.3V, 20Ts). Smooth edges, no burrs, ready for winding.
- 【Tested for 9:1 Unun & Common Mode Chokes at HF】 | Works in verified builds: a 9:1 unun for a 29ft random wire antenna, and coax-wound chokes for reducing RF noise on HF bands (40m/20m/10m). One user reported clean 450Ω-to-40Ω impedance matching at feed point using a NanoVNA.
- 【Effectively Suppresses EMI/RFI in Multiple Setups】 | Field-tested by users for: filtering RF noise from solar panel inverters, reducing electromagnetic interference on AC power lines, and cleaning up signal interference on USB, coax, and network cables. Multiple builds confirmed working without modification.
- 【Securely Packed & Dimensional Checked】 | Each pair is individually packed to prevent chipping during transit. All cores are pre-checked for dimensions and magnetic permeability before shipping. If a core shows unusual induction values upon arrival, contact us for replacement.
- 【Simple to Use — Wire and Wind】 | Works with standard coax (RG58/RG8X), magnet wire, and common HF transceivers. No modification needed for basic unun or choke builds. PTFE tape not included; core fits standard coax winding patterns.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0BXW29GNF |
| Best Sellers Rank | #165,787 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #58 in Electronic Ferrites |
| Customer Reviews | 4.4 4.4 out of 5 stars (85) |
| Date First Available | March 9, 2023 |
| Item Weight | 8.8 ounces |
| Item model number | S0019 |
| Package Dimensions | 4.37 x 3.9 x 2.2 inches |

## Images

![61mm Ferrite Toroid Core 2pcs, 2.4"x1.4"x0.5" Toroidal Ring for Ham Radio Balun Unun, Common Mode Choke EMI RFI Noise Filter, HF Antenna Solar Inverter - Image 1](https://m.media-amazon.com/images/I/61UKj8bcHEL.jpg)

## Frequently Bought Together

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- BNTECHGO 16 AWG Magnet Wire - Enameled Copper Wire - Enameled Magnet Winding Wire - 4 oz - 0.0492" Diameter 1 Spool Coil Red Temperature Rating 155℃ Widely Used for Transformers Inductors

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**Shop now:** [https://www.desertcart.nz/products/527831477-61mm-ferrite-toroid-core-2pcs-2-4x1-4x0-5-toroidal](https://www.desertcart.nz/products/527831477-61mm-ferrite-toroid-core-2pcs-2-4x1-4x0-5-toroidal)

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*Product available on Desertcart New Zealand*
*Store origin: NZ*
*Last updated: 2026-10-06*