Toroid 2643251002

(Inc. Tax)
(Ex. Tax)

Customers outside the UK pay the lower (Ex. Tax) prices when ordering. However, some countries require you to pay tax on imported parcels. Details here.

(No reviews yet) Write a Review
Calculated at Checkout

Toroid  2643251002

Ferrite Toroid, type 43 material. This model of toroid has been found by various hams to be a good choice for ununs for EFHW antennas, for an average power of up to about 40-50W.

For QRP use, you might like to consider a 2643625002 toroid instead (smaller, lighter and cheaper than this toroid).

Outside Diameter= 1.54 in / 39.1 mm +/- 0.75 mm
Inside Diameter = 0.66 in / 16.75 mm +/- 0.50 mm
Height = 0.875 in / 22.2 mm +/- 0.80 mm




  • "Building an UNUN for an EFHW Antenna" article by Mike Dunstan G8GYW, in Practical Wireless October 2023
  • , , plus various other articles that can be found by searching for 2643251002 on Owen's website