Fair-Rite 5952003801 MnZn Ferrite Toroid, 52 material, for wide band transformers from 1 to 50MHz. These are similar to the older K material and ideal for use as noise or common mode suppressors on cables to reduce interference on the HF bands, or constructing baluns. permeability ui=250.

Size: Diameter 61mm, Height 12.55mm Hole Size 36mm, color Grey, Fair-Rite PN# 5952003801  Please see the 5952003801 data sheet for more information.

I highly recommend the excellent Youtube videos by Colin MM0OPX on tests that he has made with EFHW Transformers.

Tariff Note:  Brand Fair-Rite USA, Manufacturing Country China, Price increase to Australia due to incresed Tariff