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Re: [RFI] DigiKeyer II

To: rfi@contesting.com
Subject: Re: [RFI] DigiKeyer II
From: Kostas SV1DPI <sv1dpi@otenet.gr>
Date: Thu, 19 Dec 2013 07:30:39 +0200
List-post: <rfi@contesting.com">mailto:rfi@contesting.com>
Hello Peter
Try use a different usb cable with digikeyer. Usually the usb cable is the problem with Microham products. Try also a different route for the cable or even better a different usb port. I had found one time that a usb port in front of my computer had rfi problems and not others. This port was connected with the motherboard with a long cable. Also you will find in Jim's tutorial that mix 31 ferrites are suitable for rfi problems. Use better the 2.5 inches round ferrite. You will find the part number inside the tutorial. By the way I had not ever problems with microkeyer products. I use a mk2r+ all day and I have used a digikeyer in my club's station without problems ever. Once a time I had some rfi in my club's digikeyer but it was because an unshielded cable of the cw key we tried. I changed the cable with a shielded one and all ok.
Good luck

73 Kostas SV1DPI

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