From Amateur Radio Newsline 1075:
Dallas heart monitor failure suggests DTV problems
If you think you have RFI problems, a Dallas Texas television station has
you beaten by a city mile. When it turned on its new high definition
transmitter it caused the wireless heart monitoring system at the Baylor
Medical Center to loose all patient contact.
According to news reports, no patients were injured during the system
outage. The station involved, WFAA Dallas, Texas, did agree to suspend
operations of the new transmitter until the hospital monitoring system was
moved to a new set of frequencies not prone to digital television
interference.
But the shutdown of wireless heart monitors following launch of DTV service
in Dallas is almost certainly is a harbinger of similar problems elsewhere.
According to Communications Daily, the problem centers on the fact that
many hospitals have wireless systems which relay patient heart activity
data to nursing stations. This lets the patients roam about. Unfortunately,
many of these systems rely on previously unused television channels which
just now are being occupied by new Digital Television signals. Moving all
the hart monitoring systems will be an expensive proposition for the
nations hospitals.
And the heart monitors are not alone. Many other types of wireless systems
are believed to use currently unused DTV channels as well.
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