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FT-240-43 Ferrite Toroid Core – Mix 43 for RFI Suppression & HF Baluns (2.4" OD, High Permeability) (PACK OF 1)

FT-240-43 Ferrite Toroid Core – Mix 43 for RFI Suppression & HF Baluns (2.4" OD, High Permeability) (PACK OF 1)

Q: Are the north and south poles, axially (top and bottom) or diametrically (side to side)?

Your question indicates that you assume this product is a magnet. This product is not a magnet. It is a ferrite core used to construct impedance matching transformers by winding wires repeatedly through the center and tightly wrapped around the edges of core.

Q: works for dash cam radio interference???

You can use the clip on type for that as well. Get good ones, not unknown cheap chinese.

Q: Would this help with noise on AM radio? Wrap the antenna wire around and through this?

If the antenna wire is just that a wire then you will only decrease the signal and the noise. Find the source of the noise. LED lights, wall plug-in power sources, or other electrical appliances. If you find the source then maybe using snap on ferrite cores. They see these on Amazon also. I found a source for my AM noise was a power supply for a blue tooth adapter I had. After unplugging this the noise went away. If you shield the antenna as using coax and running an outside antenna wire to get away from the noise that might work also, but that depending where you live might not be possible.

Q: what is the dimater of the inner hole?

I don't have an ID micrometer handy but an eyeball guess with a desk ruler is about 1 3/8 inch. If you need something more precise or in metric, I can figure that tomorrow.

Product ID: 157872753

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⚡Supports up to 1 kW power handling

📏2.4" OD large core for multi-turn winding

📶Effective RFI suppression 20-250 MHz

Frequently Bought Together

FT-240-43 FT240-43 Ferrite Toroid Core 43 Material

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

FT-140-43 Ferrite Toroid Core | 43 Material

Description

📡 Crush RFI & boost your signal game with the FT-240-43!

BUILT FOR POWER - Handles up to 1 kW, perfect for demanding HF baluns and impedance transformers.
SPACIOUS DESIGN - Large 2.4" outer diameter accommodates multiple turns of RG-8, RG-213, or speaker wire effortlessly.
VERSATILE APPLICATIONS - Ideal for 1:1, 4:1, 9:1 baluns, common-mode chokes, and RFI suppression across various devices.
MAXIMIZE SIGNAL CLARITY - High initial permeability (µi ≈ 850) ensures superior EMI filtering with minimal signal loss.
RELIABLE UNDER PRESSURE - Thermally stable core maintains performance even in high-stress environments.

The FT-240-43 Ferrite Toroid Core, crafted from premium Mix 43 material, is engineered for high-efficiency RFI suppression and HF balun construction. With a large 2.4" outer diameter and high permeability, it supports multiple wire turns and power handling up to 1 kW, making it a top choice for RF engineers and ham radio pros seeking reliable EMI filtering and antenna performance enhancement.

Have a Question? See What Others Asked

Are the north and south poles, axially (top and bottom) or diametrically (side to side)?

works for dash cam radio interference???

Would this help with noise on AM radio? Wrap the antenna wire around and through this?

what is the dimater of the inner hole?

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