[Amps] Experience with Heart Pacemakers?

[Roger (K8RI)]

On 8/2/2014 5:57 PM, Jim Brown wrote:
> On 8/2/2014 12:07 PM, Carl wrote:
>> Put the amp in another room or seperate it from you by a grounded 
>> screen wall/enclosure....never give up the amp! 
>
> A grounded screen wall/enclosure shields only the electric field and 
> the EM field. It is completely ineffective for magnetic shielding, and 
> that's the potential hazard of the amp.

Jim, most "present day" cardiac pace makers and defibrillators are 
pretty much immune to RF except at their link and internal operating 
frequencies.  The ones developed by Cleveland clinic, which I have had 
no limitations as to ham radio frequencies, or welding.  They did 
recommend routing the cables away from your core.

Typically the cables would run lengthwise with your body. They 
recommended not to do that, but to bring them in from the side. They 
actually have a tutorial on welding.

The only real restriction was to not carry a cell phone in your shirt 
pocket over the pacemaker/defib.
I've been welding, using a plasma torch and operating HF for nigh onto 
10 years with no problems.
BTW the amp is between 2 to 3 feet from me.

73

Roger (K8RI)


>
> 73, Jim K9YC
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