Re: [bmelist] mobile phone towers.

[Ray Bowles]

John,
Thanks and thanks to all who responded.

Ray

-Original Message-
From: Coles John [mailto:john.co...@petermac.org] 
Sent: Tuesday, 14 October 2014 10:19 AM
To: Ray Bowles; bmelist@bme.asn.au
Subject: RE: mobile phone towers.

At Peter Mac, Telstra produced a field strength survey.  The antennae
are quite directional. The field strength inside the building directly
behind the units was very low. 
A much higher field strength was received from those on the Mercy
Maternity Hospital across the Fitzroy gardens.

John Coles

-Original Message-
From: bmelist-boun...@bme.asn.au [mailto:bmelist-boun...@bme.asn.au] On
Behalf Of Ray Bowles
Sent: Monday, 13 October 2014 5:52 PM
To: bmelist@bme.asn.au
Subject: [bmelist] mobile phone towers.

Hello all,

 

Just wondering if anyone out there has had experience with mobile phone
towers on their hospital building.

Any issues that need consideration?

Ie. Induced interference?

  

 

regards

 

Ray Bowles

Manager - Biomedical Engineering

Goulburn Valley Health  I  Graham Street  I SHEPPARTON VIC 3630

t: 03 5832 3130  I  f: 03 5832 2013  I  m: 0407 322  037 

I  e: ray.bow...@gvhealth.org.au <mailto:ray.bow...@gvhealth.org.au>   I
w: www.gvhealth.org.au <http://www.gvhealth.org.au/> 

 

 

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Re: [bmelist] mobile phone towers.

[Coles John]

At Peter Mac, Telstra produced a field strength survey.  The antennae are quite 
directional. The field strength inside the building directly behind the units 
was very low. 
A much higher field strength was received from those on the Mercy Maternity 
Hospital across the Fitzroy gardens.

John Coles

-Original Message-
From: bmelist-boun...@bme.asn.au [mailto:bmelist-boun...@bme.asn.au] On Behalf 
Of Ray Bowles
Sent: Monday, 13 October 2014 5:52 PM
To: bmelist@bme.asn.au
Subject: [bmelist] mobile phone towers.

Hello all,

 

Just wondering if anyone out there has had experience with mobile phone towers 
on their hospital building.

Any issues that need consideration?

Ie. Induced interference?

  

 

regards

 

Ray Bowles

Manager - Biomedical Engineering

Goulburn Valley Health  I  Graham Street  I SHEPPARTON VIC 3630

t: 03 5832 3130  I  f: 03 5832 2013  I  m: 0407 322  037 

I  e: ray.bow...@gvhealth.org.au <mailto:ray.bow...@gvhealth.org.au>   I
w: www.gvhealth.org.au <http://www.gvhealth.org.au/> 

 

 

This communication is intended only to be read or used by the addressee. The 
information contained in this communication may be confidential information. If 
you are not the intended recipient, any use, interference with, distribution, 
disclosure or copying of this material is unauthorised and prohibited. The 
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of the mistaken delivery to you. If you have received this communication in 
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Confidentiality and legal privilege attached to this email 
(including any attachments) are not waived or lost by 
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If you have received this email in error, please delete it 
and notify us immediately by telephone or email.  Peter 
MacCallum Cancer Centre provides no guarantee that this 
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[bmelist] mobile phone towers.

[Barnett, Robert]

No problems at Alfred either...

Rob.


-Original Message-
From: bmelist-boun...@bme.asn.au [mailto:bmelist-boun...@bme.asn.au] On
Behalf Of Ray Bowles
Sent: Monday, 13 October 2014 17:52
To: bmelist@bme.asn.au
Subject: [bmelist] mobile phone towers.

Hello all,

Just wondering if anyone out there has had experience with mobile phone
towers on their hospital building.

Any issues that need consideration?

Ie. Induced interference?

  

 

regards

 

Ray Bowles

Manager - Biomedical Engineering

Goulburn Valley Health  I  Graham Street  I SHEPPARTON VIC 3630

t: 03 5832 3130  I  f: 03 5832 2013  I  m: 0407 322  037 

I  e: ray.bow...@gvhealth.org.au <mailto:ray.bow...@gvhealth.org.au>   I
w: www.gvhealth.org.au <http://www.gvhealth.org.au/> 

 

 

This communication is intended only to be read or used by the addressee.
The information contained in this communication may be confidential
information. If you are not the intended recipient, any use,
interference with, distribution, disclosure or copying of this material
is unauthorised and prohibited. The confidentiality attached to this
communication is not waived or lost by reason of the mistaken delivery
to you. If you have received this communication in error, please destroy
it and notify the sender by return email.
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Re: [bmelist] mobile phone towers.

[Michael Flood]

Hi Ray

Have a chat with Frank Meaco at Monash.

My recollection was that they had antennae all over the roof, and on the
wall just outside ICU back in the days when phones were GSM 2 (TDMA), and we
knew they did cause some problems with equipment because of the pulsatile
nature of the RF envelope for TDMA.

..but I don't believe Monash ever had a problem !!

If you think about it, the manufacturer wants to maximise the RF radiation
where it can be useful .ie forward of the antenna, any energy out the
back is wasted energy.  Secondly, typically the energy envelope for a
mounted antenna hits the ground a couple of hundred meters from the
antenna.by which time the inverse square law means the E-field is really
low and does not present a hazardsomething those who did not want a
tower 'in their backyard' could never get their head around !!  For them,
that was the safest place for it to be.

Since the phone systems changed to CDMA, WCDMA, spread spectrum and other
modulation technologies which I don't profess to understand, the RF envelope
is no longer pulsatile in nature, and as a consequence phone interference is
almost a non-event these days.  

Hope this helps.

Regards 


Michael Flood

Principal
Locus Consulting Pty Ltd
Email:  m...@locusconsulting.net.au
Phone:  +61 (0)2 6112 8325
Mob:+61 (0)40 1147 605



-Original Message-
From: bmelist-boun...@bme.asn.au [mailto:bmelist-boun...@bme.asn.au] On
Behalf Of Bernie Kobier
Sent: Monday, October 13, 2014 6:46 PM
To: Ray Bowles
Cc: 
Subject: Re: [bmelist] mobile phone towers.

At Goulburn we have had mobile phone cell on the building for about 2 years
now and recently had an addition off antennas. As far as we are aware there
has been no interference issues. 



Bernie kobier

Electronics tech
Goulburn NSW
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Re: [bmelist] mobile phone towers.

[Bernie Kobier]

At Goulburn we have had mobile phone cell on the building for about 2 years now 
and recently had an addition off antennas. As far as we are aware there has 
been no interference issues. 



Bernie kobier

Electronics tech
Goulburn NSW
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[bmelist] mobile phone towers.

[Ray Bowles]

Hello all,

 

Just wondering if anyone out there has had experience with mobile phone
towers on their hospital building.

Any issues that need consideration?

Ie. Induced interference?

  

 

regards

 

Ray Bowles

Manager - Biomedical Engineering

Goulburn Valley Health  I  Graham Street  I SHEPPARTON VIC 3630

t: 03 5832 3130  I  f: 03 5832 2013  I  m: 0407 322  037 

I  e: ray.bow...@gvhealth.org.au    I
w: www.gvhealth.org.au  

 

 

This communication is intended only to be read or used by the addressee. The 
information contained in this communication may be confidential information. If 
you are not the intended recipient, any use, interference with, distribution, 
disclosure or copying of this material is unauthorised and prohibited. The 
confidentiality attached to this communication is not waived or lost by reason 
of the mistaken delivery to you. If you have received this communication in 
error, please destroy it and notify the sender by return email.
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