Topband: Heartfelt EMI

Bob Eldridge eldridge at
Tue Sep 15 11:12:09 PDT 2009

Anyone have any information from personal experience, or someone else's, using an unshielded dummy load and/or an unshielded balun near a person with an implanted pacemaker?  I have lots of information from Medtronic on possible EMI effects, but it tends to be mostly about distance from hand carried antennas.  I am concerned about a kW or so at 1.8 to 28 MHz into a dummy load in the ATU three feet from the pacemaker-equipped operator pulsing CW.

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