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Q: 2.4Ghz Radio Frequency Compatibility in Hospitals ( No Answer,   1 Comment )
Question  
Subject: 2.4Ghz Radio Frequency Compatibility in Hospitals
Category: Miscellaneous
Asked by: jorge03-ga
List Price: $40.00
Posted: 01 Aug 2005 09:05 PDT
Expires: 31 Aug 2005 09:05 PDT
Question ID: 550414
Background
I understand the 2.4Ghz spectrum has been reserved by the federal
government as an open frequency for communications technologies and
other new technologies.  Examples of technologies that operate in the
2.4Ghz frequency are Bluetooth, Wi-Fi 802.11, microwave ovens, and
cordless phones etc.

Hypothesis 
Due to this frequency allocation I suspect that equipment in hospitals
(like EKG machines, IV pumps, video towers etc.) have been designed so
that technology operating in the 2.4Ghz frequency do not interfere
with hospital equipment.

Question
I need proof that technology operating in the 2.4Ghz frequency does
not interfere with hospital equipment.  The proof needs to come from
at least one government agency.  White papers from other organizations
will make good back-up material.

Clarifying Points
I don?t need proof that Wi-Fi, Bluetooth, microwave ovens, or cordless
phones do not interfere with hospital equipment.  Those are just
examples of some technologies that operate at 2.4Ghz.

I am working with a company that has developed a new technology for
hospitals that operates in the 2.4Ghz frequency and we need to show
that since it is at 2.4Ghz that it won?t interfere with hospital
equipment.

Payment will be delivered if at least one good and clear resource is
provided from a government agency.  It has to be something that can be
sourced.  A tip will be provided for good back-up material, like white
papers from other organizations, or for material from additional
government agencies.
Answer  
There is no answer at this time.

Comments  
Subject: Re: 2.4Ghz Radio Frequency Compatibility in Hospitals
From: commo-ga on 28 Aug 2005 22:00 PDT
 
I am not a Google Researcher and so this comment will be brief.  No
guarantee can be made that a 2.4 GHz RF signal will not interfere with
hospital equipment because equipment below specified strength levels
do not require licencing, neither for transmission nor reception.
Generally, hospital equipment sensitive to a specified frequency is
both transmitting and receiving on that frequency (or a harmonic of
that freq).  This is not necessarily from a wireless tx/rx
relationship but could be as a function of internal component
oscillation (eg. monitors).  These undocumented RF-user components and
systems are the reason most hospitals have been forced to adopt a
"no-transmitter" policy.  Although it is really they who are in
violation (at least in spirit if not letter) of RF regulatory
guidelines, try explaining to Mom that her daughter just died because
you had to check your email.  While medical groups are pushing
contractors to eliminate components vulnerable to commonly licenced
spectrum allocatiions (eg. wi-fi, bluetooth, cell-phone, etc.) it will
be considerable time before all the legacy equipment is gone.

Comm O

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