Good item thanks.
2 ferrite Rings arrived wel protected after 1 month. Mesurementes: AL = 9.27µH/winding @ 100kHz. = High. Conduction with separeted 2 x 3 windings: Can be used on LF and lowest HAM bands up to 160m, ...80m becomes difficult. Max is around 200kHz. Picture #1 shows S21 on the whole SW band scale -3dB/div! and picture #2 shows only its lowest part. scale -0.1dB/div! Picture #3: The Rings have not very big differencies. scale -0.1dB/div!