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MSSV Toroids
Designed for EMI suppression and RFI reduction, this ferrite toroid core offers high-end specifications and effective performance Suitable for various applications, including HAM radio, power line filters, and impedance matching.
William
Reviewed in the United States on May 4, 2025
I've been using this in a 49:1 unun and it has performed flawlessly with my 20W rig. I have another mix-31 toroid from this brand that I use as a choke. Recommended.
OtakuN3rd
Reviewed in the United States on May 4, 2025
This is a well manufactured toroid core. There's minimal pitting from the molding process, and the edges are chamfered so that they won't damage wire insulation.Its a great item for making an end-fed half wave antenna.
ERROR404
Reviewed in the United States on May 29, 2025
Nicely made ferrite toroid core. It doesn't suffer from significant temperature related loses until the temps rise above 212*F. It can be used to build a high frequency antenna that can operate across a broad frequency range. I'm still experimenting with my antenna build as I'm newer to HAM. But its a nice component to have in your kit.
dan
Reviewed in the United States on May 26, 2025
The FT-240-43 ferrite core is well made and has a smooth finish without any noticeable, pits, roughness or blemishes. Type 43 ferrite material is suitable for winding balun transmission transformers that can operate over the frequency range of about 25-200MHz without excessive heating and/or power loss. Design of baluns can be found in the book "Transmission Line Transformers" by Jerry Sevick (Scitech Press).
David
Reviewed in the United States on May 24, 2025
Bought 2 of these, have noticed no difference whatsoever. Not 100% of the composition of the material.
Thomas Kitz
Reviewed in the United States on May 15, 2025
This is a good quality core and has worked well in my tests. This is well made and the edges are not rough. Good part.
MAExecutive
Reviewed in the United States on May 14, 2025
The FT-240-43 ferrite toroid core is a great toroid. It has a smooth finish free from chips or pitting. Its dimensions match the specs listed: 2.4" outer diameter, 1.4" inner diameter, and 0.5" height.I incorporated this toroid into a 49:1 transformer for an end-fed half-wave (EFHW) antenna, and it performed as expected. I don't get much EMI/RFI noise on the antenna, so it seems comparable to other toroid chokes, making it a solid choice for noise suppression in the 20 MHz to 250 MHz range . I imagine it can be used for baluns above 250 MHz, its efficiency may decrease.Regarding power handling, the FT-240-43's capacity depends on the winding and wire gauge used. For instance, using 14-gauge wire, it can handle up to 200 watts SSB. For higher power applications, stacking multiple cores or opting for a larger core might be better.Overall, the toroid offers excellent value for its price.
David Sundquist
Reviewed in the United States on May 11, 2025
Item arrived in good condition, in a box that protected it well during shipping. Used it to build a 4:1 unun and it performed as expected on all bands!
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