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eHam Forums => CW => Topic started by: N4HAL on December 25, 2013, 02:41:09 AM



Title: RF Supression Keyboard
Post by: N4HAL on December 25, 2013, 02:41:09 AM
Have a conventional keyboard that rf was getting into. Put 3 ferrite beads on it and it seems to be working fine. I see ads for rf suppressed keyboards, any idea what their approach is?

Bill
N4HAL


Title: RE: RF Supression Keyboard
Post by: K8AXW on December 25, 2013, 08:39:49 AM
Many manufacturers use a clamp-on ferrite bead on the keyboard line.  It's usually encapsulated and looks like a plastic knot in the line.

Al - K8AXW


Title: RE: RF Supression Keyboard
Post by: ZENKI on December 28, 2013, 09:47:11 PM
Another thing that also works is to ground your PC case to your station ground. It works so well for me that I could remove the ferrite beads hanging off the cords which can be a pain in the rear end. Either way ferrite and ground the case will help. Just make sure you scrape off the pain to make contact with the cases bare metal.