9mm Snap-on Ferrite Clip

A 9mm Snap-on ferrite clip for keeping RF out of keyboards/mice and other Shack perhiperals. A few loops of a cable around these can work wonders on keyboard/mouse lock-ups and also reducing breakthrough on "Hi-Fi" speakers.  You can obviously use more than 1 on a cable if you have a particularly tricky RFI issue!

SORRY - NOW ALL GONE!

• 7-9mm inner diameter (does NOT fit RG213)

We also sell them in 5mm diameter and 13mm diameter versions.

This generic brand has similar properties to 43-mix - If you plan on using snap-on ferrites on coaxial cable (especially at HF frequencies), it's advisable to use a proper 31-mix Fair-Rite core such as the Problem Solver.

A note about ferrites, mixes and RFI/Noise QRM :
There is no guarantee that any ferrite will cure noise on your radio, and it may not be possible to "filter" any noise from your neighbour's equipment that is radiating in the air (eg: solar-panels, greenhouse/fish-pond equipment etc).  "Ferrite-on-cable" is the best approach, and significant gains can usually be obtained by getting your own house in order before tackling external sources.  Experimentation with placement, turns and quantity of ferrites is key - there is never a one-size-fits-all solution!