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Ferrite Toroid FT240-61

Ferrite Toroid FT240-61
Brand: Ham Goodies
Product Code: HG-FT24061
Availability: 10
Price: £10.00
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A large ferrite toroid as used in our QRO CobWeb balun (2 ferrites are required) and also used as part of G8JNJ's UnUn tests.

  • Size: 60.0x35.5x12.7mm, 2.4x1.4x0.5in

Toroid sizes/types are easy to ID, the "140" translates to 1.4" (diameter) and the "61" is the ferrite mixture. What type do you need? 61 is used for the G3TXQ CobWebb balun, 43 is good from 7MHz and up (and a good general-purpose 7-30MHz solution) while 31 is good for lower HF bands. Remember, you can stack the cores for increased choking and power-handling. As always, ratings need to factor in the aerial (SWR) match and duty-cycle.

See our video on Ferrite Toroids and Baluns here...

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