P
Phil Hobbs
Guest
On 2020-03-19 16:27, Michael Terrell wrote:
Never had the privilege. BITD at least, the RF safety limits were based
on thermal effects, and as far as I know, that worked OK.
Cheers
Phil Hobbs
--
Dr Philip C D Hobbs
Principal Consultant
ElectroOptical Innovations LLC / Hobbs ElectroOptics
Optics, Electro-optics, Photonics, Analog Electronics
Briarcliff Manor NY 10510
http://electrooptical.net
http://hobbs-eo.com
On Thursday, March 19, 2020 at 1:23:27 PM UTC-4, Phil Hobbs wrote:
On 2020-03-19 13:21, David Brown wrote:
On 19/03/2020 17:07, Rick C wrote:
On Thursday, March 19, 2020 at 5:19:02 AM UTC-4,
jla...@highlandsniptechnology.com wrote:
Is 5G high power? What is especially harmful about 5G?
What is different about 5G is the frequency. In discussions in
a UK group they talk about it including bands well above the 5
GHz we use for cell phones and other devices.
As the frequency increases we do need to consider that at some
point it may start interacting differently with human tissues.
Chemistry does have effects due to specific wavelengths of
radiation. For sure we will find any harmful effects that may
exist if we start selling people millions and billions of
radiators. But it will take a while.
Certainly it is important to consider if the higher frequencies
are likely to have detrimental effects. That is why they /have/
been considered, and tested. So far, nothing conclusive has been
found - either in terms of test results or theoretical methods of
harm - for 5G frequencies. Of course there will be problems if
the signals are strong enough (then you get heating in the manner
of a microwave oven). But since there are many more 5G bases
than 3G or 4G bases, the signals are in fact a good deal lower
power.
As you say, time will tell. Well, it /might/ tell. Testing and
deployment can reveal that there /are/ health problems from 5G,
but they can't show that there are none.
All we know for sure is that there will be countless crackpots
(and some perfectly sane scammers) who claim they get health
problems from 5G. These will be some of the same people that
think they are sensitive to WiFi.
And we know there will be lots of people who think the best idea
is to be prudent and wait until we know more - which sounds very
sensible at first sight. But such skepticism can also backfire -
it is the same thing that gives people such an exaggerated fear
of radiation, and means we kill huge numbers of people with coal
smoke to avoid a miniscule increased risk of cancer in a few
people. There are no simple answers.
If radar technicians aren't dropping like flies, the rest of us
have very little to worry about.
Have you ever worked on RADAR, or at a RADAR site? I did both, in the
early '70s. The main system was a pair of 2MW Westinghouse systems at
Cairn Airfield, outside of Ft Rucker. The rest were portable systems
left over from the Korean war era. Those were the ones that I had to
service when the RADAR section was short handed. I did so well that
they tried to have me transferred from the Weathervision support
section before finished the week.
I also worked at a transmitter site that generated 95 KW of UHF RF,
and it had a 5MW EIRP from the antenna. It didn't affect my health.
Never had the privilege. BITD at least, the RF safety limits were based
on thermal effects, and as far as I know, that worked OK.
Cheers
Phil Hobbs
--
Dr Philip C D Hobbs
Principal Consultant
ElectroOptical Innovations LLC / Hobbs ElectroOptics
Optics, Electro-optics, Photonics, Analog Electronics
Briarcliff Manor NY 10510
http://electrooptical.net
http://hobbs-eo.com