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<DIV><FONT face=Arial size=2>Yes, you make a good point. Electromagnetic
fields are another source of ingress, whether from a nearby cell phone or by
being located a mile away from a 50 KW AM radio transmitter (etc.).</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>>one does wonder why there's
such inadequate shielding
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>As a ham radio operator, I can say that has been a
question raised about consumer electronics in general for many decades,
particularly since the advent of solid state devices with their low voltage
diode detecting capability. The answer, unfortunately, is
simple--economics. If only 1 out of 1000 devices is exposed to a situation
that results in interference, the manufacture is loathe to spend even a nickel
to protect against it--especially if the volume is large. Five cents on
1,000,000 products is $50,000. Depending on the strength of the
interfering signal, it can take a lot more than five cents to protect it.
Cell phones aren't very high power, The 50 KW transmitter--well that's
another story.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Wilton</FONT></DIV>
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