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

I wrapped both my power cable and coax thru two of these as I was having rfi getting into my new Yaesu Ft-710. I am using my radio inside my car with a 20 meter hamstick on a magmount on the roof. I was only able to go up to 60 watts or so before my rig would beep on transmit and lock the radio. With one of these on my coax and power cable I can now transmit using 100 watts with zero problems.

Quality ferrite. Built common mode choke and a 49:1 unun for an EFHW antenna. Works great with low SWR.

Value and build quality cant be beat. It’s functional if you use it correctly.

I have not tested in a circuit yet, but seems well constructed. It is very similar to other toroids that I have used.

Works great, but not packaged really well for shipping. They are somewhat brittle. I ordered one of these along with all the other part I needed to build a 49:1 unun for an end-fed half-wave antenna for amateur radio. Unfortunately it was all stuffed into one of Amazon's paper envelopes, which resulted in one casualty - this toroid, which was literally snapped in half, because they put it in a bubble wrap and then into a plastic bag. Amazon gladly setup a return and replacement, but would take a week to deliver the replacement, which was a disappointment to say the least. This motivated me to place a separate order, this time for two of these instead of one, for higher power handling, and quicker delivery (and the hope that at least one of them would be good enough to build with), which was in time for me to continue my antenna project before the weather changes on me again.

This ferrite ring was perfect for building a 'common mode' current choke as used in amateur radio transmissions lines. It is large enough to accept up to twenty turns of RG-58X coaxial cable.

I needed an FT-240-43 toroid to construct a common mode choke. This fit the bill and the price was right. The toroid arrived undamaged, although the packaging looked sketchy. The vendor could do a better job there, but this is a review of the product, not the vendor.I have no way to test if this really was a mix 43 or not, but it definitely was an FT-240! NI have no reason to believe they didn't ship ne a mix 43, but it would be nice if it was marked in some way.I wound my choke and my common mode noise issues went away, so the toroid (or is it a toe roid?) did its job.

Esta es una ferrita FT 240-43. Y cumple con los requisitos. Construí un choke para HF y funcionó como se esperaba. Se recomienda.