[TowerTalk] OT but relevant

[Big Don]

The results ot 1991 US Army testing of pacemakers in *EMP*,,
are discussed in http://www.dtic.mil/dtic/tr/fulltext/u2/a242990.pdf
At that time, the latest ones were OK, the old ones had problems....

73 Don N7EF

On Thu, Feb 25, 2016 at 11:46 AM, Earl Morse <kz8e at wtd.net> wrote:

> I remember watching Medtronic testing their pacemakers at a lab we used to
> use in MN back in the day.  I remember thinking that they were testing at
> ridiculously high levels at the time.
>
> The pacemakers are small and relatively immune to RF.  On Medtronics
> webpage I couldn't find what levels they test to but would guess that they
> are around 100 V/m.
>
>
> http://www.medtronic.com/patient-services/cardiac-emc-guide/communications-office-equipment/index.htm
>
> Medtronics doesn't really seem to worry unless you get within a couple
> feet of the antenna.  Distance will vary with power and gain of the antenna
> but their rules of thumb seem to support that they are relatively immune.
> They don't break it out by frequency but by power and distance 12" = 3-15
> watts, 24" for 15-30 watts.  So your handheld has a better chance of
> causing you distress than your home HF station just due to proximity.
>
> YMMV, so if you feel funny stop transmitting.
>
> Earl
> N8SS
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