FT-140-43 Ferrite Toroid Core - Amidon | 43 Material

The folks at FW Electronics are great. This was a product I needed and wanted. I ordered it and the product arrived quickly and painlessly. Nearly all the way good. I opened the packaging and noticed a discrepancy between what I ordered and what I received. Quickly a mistake was realized and communicated to FW-Electronics. Of course, these discrepancies can cause problems if you aren't careful. FW-Electronics sent a replacement just as quickly and without additional cost to me. For most everyone, these are the critical details. Product sold, good product, fast turnaround, etc. All of those things I report about FW - Electronics. Here's the important part of the review: This company made a mistake, initially. These things happen and nobody was upset. Understanding that toroid core mixes are very specific for use in amateur radio applications (as in other applications). So there's a confidence concern in my case when I lack the test equipment to identify the different mixes. FW - Electronics helped me visually identify the core types and sent the correct (though properly labeled) toroid cores without cost to me, and let me keep the incorrect toroids (which I still will readily put to good use at my QTH or to a deserving ham learning to use RF chokes). My point in this detail is I appreciate great products and great service. But I appreciate it so much more when things *don't* go well and the company and staff make it right. Nobody's perfect, but making it perfect when it isn't shows me the company appreciates the customers' work product and respects their own. I'll keep coming back to FW! 73 DE K6RCS

Used to make 9:1 end fed antennas. Works good. <1.5 swr 10 to 80 meters.

Because this is an Amidon core, I can rely on it to perform per its specs. Off-brand cores that "work like" Amidon or FairRite cores simply can't be relied upon to perform as well. This is especially true in antenna systems where high power is used.

I used it to make a 1:49 transformer for my End Fed Half Wave antenna and It's worked great. It came well packed.

Works as advertised. Excellent condition no defects.. Used as a matching transformer in an EFHW antenna as the. Heart of a 49:1UNUN.