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 hazard........something 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: <bmelist@bme.asn.au> 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 _______________________________________________ bmelist mailing list bmelist@bme.asn.au http://lists.bme.asn.au/mailman/listinfo/bmelist _______________________________________________ bmelist mailing list bmelist@bme.asn.au http://lists.bme.asn.au/mailman/listinfo/bmelist
