Radiation from wireless TV sender harmful?

[ANON]

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I've recently purchased the Philips SBC VL1200 TV Sender/Receiver kit to
transmit TV pictures across my home. I do worry about mobile phone
radiation and the like, and use hands-free where possible.

Is the radiation from this device also cause for concern? Here are the
specs:

Carrier freq: 2.4 GHz
Transmission power: <10 mW
Type: FM
Range: 100m outdoor/30m indoor

Product page: http://tinyurl.com/2s83k
Leaflet:
http://www.p4c.philips.com/files/s/sbcvl1200_05/sbcvl1200_05_pss_eng.pdf

Thanks.

Richard H.

 

[Guest]

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Anon wrote:
>
> I've recently purchased the Philips SBC VL1200 TV Sender/Receiver kit to
> transmit TV pictures across my home. I do worry about mobile phone
> radiation and the like, and use hands-free where possible.
>
> Is the radiation from this device also cause for concern? Here are the
> specs:
>
> Carrier freq: 2.4 GHz
> Transmission power: <10 mW
> Type: FM
> Range: 100m outdoor/30m indoor
>
> Product page: http://tinyurl.com/2s83k
> Leaflet:
> http://www.p4c.philips.com/files/s/sbcvl1200_05/sbcvl1200_05_pss_eng.pdf

10 mW is mightly small. Don't plaster the transmitter antenna to your
forehead. Does your girlfriend (sister? mother?) know about the
pinhole camera now in the loo?

--
Uncle Al
http://www.mazepath.com/uncleal/qz.pdf
http://www.mazepath.com/uncleal/eotvos.htm
(Do something naughty to physics)

 

[Guest]

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"Anon" <anon@anon.con> wrote in message
news:RYRoc.3100$aq7.27832486@news-text.cableinet.net...
> I've recently purchased the Philips SBC VL1200 TV Sender/Receiver kit to
> transmit TV pictures across my home. I do worry about mobile phone
> radiation and the like, and use hands-free where possible.

Then you worry too much..! The scaremongering comes from the use of the
word "radiation" which puts into people's minds visions of nuclear
reactors and the like. The radio frequency energy coming from a device
such as a phone is very small and unless you walk around with your phone
plastered to the side of your head (and in a call) all day every day you
have nothing to worry about.

> Is the radiation from this device also cause for concern?

Only if you stick the transmitter up your nose..!

Ivor

 

[Guest]

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Anon wrote:

> I've recently purchased the Philips SBC VL1200 TV Sender/Receiver kit to
> transmit TV pictures across my home. I do worry about mobile phone
> radiation and the like, and use hands-free where possible.
>
> Is the radiation from this device also cause for concern?

Only if you're using it to watch what passes for "entertainment" these days.
;-)

--

Fundamentalism is fundamentally wrong.

To reply to this message, replace everything to the left of "@" with
james.knott.

 

[ANON]

Archived from groups: alt.internet.wireless,sci.med.physics,sci.physics,uk.people.health,uk.telecom.mobile (More info?)

Judging by your replies, you all scoff at me being concerned this thing
could be harmful... then go on to say:

"Don't plaster the transmitter antenna to your forehead", "Only if you stick
the transmitter up your nose", "If you swallowed your video sender, it might
give you more radio signal than the [two million watts/1 megawatt] TV
transmitter"

In other words this laughably harmless device is potentially harmful. I'm
confused.

I sit about half a metre away from it whilst working an 8 hour day as it is
on my computer desk (this is where it gets its TV signal from - my computer
media centre).

I'm not worrying too much - I know radiation is the wrong term.

Can you guys tell me, if RF is cause for concern if placed at point-blank
range, at what range is it guaranteed not to affect me whatsoever? Serious
replies only please.

Thanks.

Richard H.

"Anon" <anon@anon.con> wrote in message
news:RYRoc.3100$aq7.27832486@news-text.cableinet.net...
> I've recently purchased the Philips SBC VL1200 TV Sender/Receiver kit to
> transmit TV pictures across my home. I do worry about mobile phone
> radiation and the like, and use hands-free where possible.
>
> Is the radiation from this device also cause for concern? Here are the
> specs:
>
> Carrier freq: 2.4 GHz
> Transmission power: <10 mW
> Type: FM
> Range: 100m outdoor/30m indoor
>
> Product page: http://tinyurl.com/2s83k
> Leaflet:
> http://www.p4c.philips.com/files/s/sbcvl1200_05/sbcvl1200_05_pss_eng.pdf
>
> Thanks.
>
> Richard H.
>

 

[floyd]

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"Anon" <anon@anon.con> wrote in message news:<si0pc.3481$BK4.31658229@news-text.cableinet.net>...
> Judging by your replies, you all scoff at me being concerned this thing
> could be harmful... then go on to say:
>
> "Don't plaster the transmitter antenna to your forehead", "Only if you stick
> the transmitter up your nose", "If you swallowed your video sender, it might
> give you more radio signal than the [two million watts/1 megawatt] TV
> transmitter"
>
> In other words this laughably harmless device is potentially harmful. I'm
> confused.
>
> I sit about half a metre away from it whilst working an 8 hour day as it is
> on my computer desk (this is where it gets its TV signal from - my computer
> media centre).
>
> I'm not worrying too much - I know radiation is the wrong term.
>
> Can you guys tell me, if RF is cause for concern if placed at point-blank
> range, at what range is it guaranteed not to affect me whatsoever? Serious
> replies only please.
>
> Thanks.
>
> Richard H.
The energy in a visible photon "light" is many orders of magnitude greater
than a photon coming from your transmitter. When people are concerned
with "radiation", it is because of the high energy photons that can cause
damage to tissue. So if the light coming from your lamp is safe, the
radiation coming from your transmitter is safe as far as the damage people
associate with the term "radiation".

Of course if you put your cat in the microwave oven (a similar frequency) it
won't do him any good. He won't die of cancer, but the tissue will just be
cooked, probably no more harmful than heating the the tissue by a conventional
method. Compare 500 W to the power of your transmitter.

Any small heating in your tissue caused by your transmitter would be
negligible. By the way, if you can pick up local stations on your TV/radio
you are already being bombarded by more energy than your transmitter can put
out, slightly lower frequency than microwave though.

 

[Guest]

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In article <c80s04$84q$1@newsg3.svr.pol.co.uk>, Ivor Jones
<this.address@notvalid.inv> writes
>
>"Anon" <anon@anon.con> wrote in message
>news:RYRoc.3100$aq7.27832486@news-text.cableinet.net...
>> I've recently purchased the Philips SBC VL1200 TV Sender/Receiver kit to
>> transmit TV pictures across my home. I do worry about mobile phone
>> radiation and the like, and use hands-free where possible.
>
>Then you worry too much..! The scaremongering comes from the use of the
>word "radiation" which puts into people's minds visions of nuclear
>reactors and the like. The radio frequency energy coming from a device
>such as a phone is very small and unless you walk around with your phone
>plastered to the side of your head (and in a call) all day every day you
>have nothing to worry about.
>
>> Is the radiation from this device also cause for concern?
>
>Only if you stick the transmitter up your nose..!
>
>Ivor
>
>

As others have said 10 milliwatts, don't even bother thinking about it.

Yes the word radiation is very scary. Ever heard of an MRI scan?, very,
very useful medical diagnostic tool..

They had to drop the first word of the original title because people
wouldn't go into them.

Nuclear Magnetic Resonance Imager
--
Tony Sayer

 

[Guest]

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On Thu, 13 May 2004 21:42:09 GMT, "Anon" <anon@anon.con> wrote:

> I do worry about mobile phone
>radiation

You are misled, then.

>and the like, and use hands-free where possible.

Pointless.

>Is the radiation from this device also cause for concern?

Also? What makes you think that radio signals form mobile phones is
cause for concern?

>Here are the
>specs:
>
>Carrier freq: 2.4 GHz
>Transmission power: <10 mW

That means "less than one hundredth of a watt" What do you think?

Bear in mind that the TV transmitter your aerial is pointing at is
probably two million watts output power. But also bear in mind that
strength falls away rapidly with distance.

If you swallowed your video sender, it might give you more radio
signal than the TV transmitter.


--

Iain
the out-of-date hairydog guide to mobile phones
http://www.hairydog.co.uk/cell1.html
Browse now while stocks last!

 

[Guest]

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>Bear in mind that the TV transmitter your aerial is pointing at is
>probably two million watts output power. But also bear in mind that
>strength falls away rapidly with distance.
>

AIUI the most powerful in the UK is the 1 megawatt series..

<Pedant mode off;-)>
--
Tony Sayer

 

[Guest]

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"Anon" <anon@anon.con> wrote in message
news:si0pc.3481$BK4.31658229@news-text.cableinet.net...
> Judging by your replies, you all scoff at me being concerned this thing
> could be harmful... then go on to say:
>
> "Don't plaster the transmitter antenna to your forehead", "Only if you
stick
> the transmitter up your nose", "If you swallowed your video sender, it
might
> give you more radio signal than the [two million watts/1 megawatt] TV
> transmitter"
>
> In other words this laughably harmless device is potentially harmful.
I'm
> confused.

Let's put it this way, you stand more chance of being run over by a bus
than suffering any harmful effects from *any* radio transmitter, let alone
such a microscopically small one. Unless you go climbing up the local TV
transmitter mast, that is ;-) (Sorry..!)

> I sit about half a metre away from it whilst working an 8 hour day as it
is
> on my computer desk (this is where it gets its TV signal from - my
computer
> media centre).
>
> I'm not worrying too much - I know radiation is the wrong term.
>
> Can you guys tell me, if RF is cause for concern if placed at
point-blank
> range, at what range is it guaranteed not to affect me whatsoever?
Serious
> replies only please.

At that power level..? You are more than far enough away. Stop worrying..!

If you want to do some reading, check out this results page from Google on
the Inverse Square Lawe:

http://tinyurl.com/39oxp

Ivor

 

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On Fri, 14 May 2004 09:49:15 +0100, tony sayer <tony@bancom.co.uk>
wrote:

>AIUI the most powerful in the UK is the 1 megawatt series.

ERP?

--

Iain
the out-of-date hairydog guide to mobile phones
http://www.hairydog.co.uk/cell1.html
Browse now while stocks last!

 

[Guest]

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Anon wrote:

> Can you guys tell me, if RF is cause for concern if placed at point-blank
> range, at what range is it guaranteed not to affect me whatsoever?
> Serious replies only please.
>

Given the power levels involved there it's unlikely there's any risk. There
have been many studies, yet there there have not been any repeatable ones,
that show risk. Bear in mind however, that you can only fail to show risk.
You can never prove there's no risk.

--

Fundamentalism is fundamentally wrong.

To reply to this message, replace everything to the left of "@" with
james.knott.

 

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tony sayer wrote:

> Yes the word radiation is very scary. Ever heard of an MRI scan?, very,
> very useful medical diagnostic tool..
>

One thing that many fail to realize, is that life has been exposed to
radiation, right from the start. It was likely a significant factor, in
the creation of life. Also, everything with a temperature above absolute
zero, emits some form of radiation. And "radiation" includes light.

--

Fundamentalism is fundamentally wrong.

To reply to this message, replace everything to the left of "@" with
james.knott.

 

[Guest]

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In article <bp29a0pegnsp65gp3i138qhtfjvb1br750@4ax.com>,
hairydog@despammed.com writes
>On Fri, 14 May 2004 09:49:15 +0100, tony sayer <tony@bancom.co.uk>
>wrote:
>
>>AIUI the most powerful in the UK is the 1 megawatt series.
>
>ERP?
>

Yes, about 40 kW going up the feeder, and the rest down to aerial gain.
--
Tony Sayer

 

[Guest]

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In article <si0pc.3481$BK4.31658229@news-text.cableinet.net>, Anon
<anon@anon.con> writes
>Judging by your replies, you all scoff at me being concerned this thing
>could be harmful... then go on to say:
>
>"Don't plaster the transmitter antenna to your forehead", "Only if you stick
>the transmitter up your nose", "If you swallowed your video sender, it might
>give you more radio signal than the [two million watts/1 megawatt] TV
>transmitter"
>
>In other words this laughably harmless device is potentially harmful. I'm
>confused.
>
>I sit about half a metre away from it whilst working an 8 hour day as it is
>on my computer desk (this is where it gets its TV signal from - my computer
>media centre).
>
>I'm not worrying too much - I know radiation is the wrong term.
>
>Can you guys tell me, if RF is cause for concern if placed at point-blank
>range, at what range is it guaranteed not to affect me whatsoever? Serious
>replies only please.
>

Well I work in radio communications and broadcast and I have similar
devices close to me for a lot of the day when I'm glued to this poxy
computer which is damaging my health for more 'cos of the sedentary
nature of working with it.

No I wouldn't indeed aren't worried!...
--
Tony Sayer

Bancom Communications Ltd U.K. Tel+44 1223 566577 Fax+44 1223 566588

P.O. Box 280, Cambridge, England, CB2 2DY E-Mail tony@bancom.co.uk

 

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In article <si0pc.3481$BK4.31658229@news-text.cableinet.net>,
Anon <anon@anon.con> wrote:

>In other words this laughably harmless device is potentially harmful.

So is a ping-ping ball, if you swallow it.

>Can you guys tell me, if RF is cause for concern if placed at point-blank
>range, at what range is it guaranteed not to affect me whatsoever? Serious
>replies only please.

It depends on what mechanism you postulate for the damage.

If it were ionizing radiation - which it isn't - there would be no
"guaranteed" safe range, just a diminishing probablility which at some
point would be so small as to be unmeasurable. You are subject to
small amounts of radiation all the time, from rocks and radioactive
gases in the air.

If it's some kind of heating effect, then I have no idea why it would
be worse than sitting near a radiator. Certainly a 10mW heater a few
inches from you would be unnoticeable.

-- Richard

 

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On Thu, 13 May 2004 21:42:09 GMT, "Anon" <anon@anon.con> wrote:

>I've recently purchased the Philips SBC VL1200 TV Sender/Receiver kit to
>transmit TV pictures across my home. I do worry about mobile phone
>radiation and the like, and use hands-free where possible.

I've had one of these for a while. Good piece of kit, even though it
seems unable to transmit the signal from an NTL remote (but we use
Tivo and that works, so not a problem for us). What concerns me more
is that whenever the microwave is on (which is about as far away in
the house as it could be), the picture and sound go bananas.


andyt

 

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"Anon" <anon@anon.con> wrote in message news:<si0pc.3481$BK4.31658229@news-text.cableinet.net>...

> Can you guys tell me, if RF is cause for concern if placed at point-blank
> range, at what range is it guaranteed not to affect me whatsoever? Serious
> replies only please.

Non-ionising radiation in general (that is to say, any electromagnetic
radiation less energetic than visible light - infrared, microwaves and
radio waves) is only dangerous when thermal effects become an issue,
as in high-power systems like microwave ovens and powerful
transmission apparatus which can cause harm by heating body tissue. In
the case of a device with

> > Transmission power: <10 mW

this isn't a problem.

The damage caused by ionising radiation is a result of electrons being
knocked from molecules within cells (they are ionised). An infrared,
microwave or radio photon doesn't have enough energy to do this - it
doesn't even have enough energy to promote the electron to the next
highest orbital.

 

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"tony sayer" <tony@bancom.co.uk> wrote in message
news:HXICLNC+bJpAFwD8@bancom.co.uk...
> In article <bp29a0pegnsp65gp3i138qhtfjvb1br750@4ax.com>,
> hairydog@despammed.com writes
> >On Fri, 14 May 2004 09:49:15 +0100, tony sayer <tony@bancom.co.uk>
> >wrote:
> >
> >>AIUI the most powerful in the UK is the 1 megawatt series.
> >
> >ERP?
> >
>
> Yes, about 40 kW going up the feeder, and the rest down to aerial gain.

Is that per channel or all channels combined..? I receive from Sutton
Coldfield and I know it's 1MW ERP but I was never sure if it was 1MW per
channel or not.

Ivor

 

[antonio]

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Anon <anon@anon.con> wrote:

> In other words this laughably harmless device is potentially harmful.

Never heard the word SARCASM?

There is only one way that a wireless device is really and truly
harmfull and that is if one is so stupid to stick it up in his ass. And
then the harm is mostly done to the device.




--
Groeten,

Antonio (Voor email, verwijder X)

 

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In article <c82b8k$lnk$1@pc-news.cogsci.ed.ac.uk>,
Richard Tobin <richard@cogsci.ed.ac.uk> wrote:
>In article <si0pc.3481$BK4.31658229@news-text.cableinet.net>,
>Anon <anon@anon.con> wrote:
>
>>In other words this laughably harmless device is potentially harmful.
>
>So is a ping-ping ball, if you swallow it.
>
>>Can you guys tell me, if RF is cause for concern if placed at point-blank
>>range, at what range is it guaranteed not to affect me whatsoever? Serious
>>replies only please.
>
>It depends on what mechanism you postulate for the damage.
>
>If it were ionizing radiation - which it isn't - there would be no
>"guaranteed" safe range, just a diminishing probablility which at some
>point would be so small as to be unmeasurable.

Maybe. The Linear, No Threshhold model is an assumption made for purposes
of setting policy, but as a scientific conclusion it's always been
somewhat controversial.

--
"You're not as dumb as you look. Or sound. Or our best testing
indicates." -- Monty Burns to Homer Simpson

 

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On Fri, 14 May 2004 11:48:02 +0000 (UTC), Andy Turner
<andyt@nospam.demon.co.uk> wrote:

>What concerns me more
>is that whenever the microwave is on (which is about as far away in
>the house as it could be), the picture and sound go bananas.

Ah, well: they leak huge quantities of RF all over the place.

Easily enough to swamp the puny signal from video senders.


--

Iain
the out-of-date hairydog guide to mobile phones
http://www.hairydog.co.uk/cell1.html
Browse now while stocks last!

 

[Guest]

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In article <si0pc.3481$BK4.31658229@news-text.cableinet.net>,
Anon <anon@anon.con> wrote:
:In other words this laughably harmless device is potentially harmful. I'm
:confused.

:Can you guys tell me, if RF is cause for concern if placed at point-blank
:range, at what range is it guaranteed not to affect me whatsoever? Serious
:replies only please.

I suggest that you read through the thread
"Is a wireless office (2.4GHz) *completely* safe for our health?"
starting from

http://groups.google.ca/groups?selm=3f697200%240%2424105%24afc38c87%40news.easynet.co.uk

It's a long thread, and it doesn't definitively answer the question,
but a couple of the posters were fairly professional about discussing
specific biological mechanisms and providing citations.
--
Rump-Titty-Titty-Tum-TAH-Tee -- Fritz Lieber

 

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On Fri, 14 May 2004 09:27:52 GMT, "Anon" <anon@anon.con> wrote:


>In other words this laughably harmless device is potentially harmful. I'm
>confused.

So are many others. It is impossible in most cases to say without
doubt that anything is harmless. It requires a level of absolute
proof that is not attainable and never will be. As a result no one
can tell you that - without any doubt whatsoever - there is no
possibility of harm. The same will be said about any item - your
computer, the paint on your walls, your floorboards.

The world has always been saturated by radio frequency radiation.
For the last 70 years or more it has increasingly been inundated by
various man made contributions as well. The only known harmful
effects are thermal - heating of body tissue (same mechanism as a
microwave oven) and these require far higher power levels than found
in your TV sender (even if you stick it to your forehead).

Other effects have been postulated and feature widely on conspiracy
theory and hysterical ranting web sites. However, to date the
evidence in support of these theories has been totally lacking or at
best extremely ambiguous. There is no evidence of harm from
environmental RF from epidemiological studies either.

>I sit about half a metre away from it whilst working an 8 hour day as it is
>on my computer desk (this is where it gets its TV signal from - my computer
>media centre).

The known risks from sitting for 8 hours a day are enormously greater
than the most pessimistic estimate of the risk of low level RF
exposure.

>Can you guys tell me, if RF is cause for concern if placed at point-blank
>range, at what range is it guaranteed not to affect me whatsoever?

The range at which thermal effects are insignificant. In most cases
of domestic items producing tiny power levels this range is zero - no
matter what you do they can't hurt you.


--
Peter Parry |Hemel Hempstead| tel +44 (0)1442 212855 |
WPP Ltd |Herts, UK | fax +44 (0)7989 853112 |
Antenna solutions for car, caravan, house, office, boat and tent.
Allgon 1800 Signal Enhancers now GBP20.

 

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On Fri, 14 May 2004 11:48:02 +0000, Andy Turner wrote:

> On Thu, 13 May 2004 21:42:09 GMT, "Anon" <anon@anon.con> wrote:
>
>>I've recently purchased the Philips SBC VL1200 TV Sender/Receiver kit to
>>transmit TV pictures across my home. I do worry about mobile phone
>>radiation and the like, and use hands-free where possible.
>
> I've had one of these for a while. Good piece of kit, even though it
> seems unable to transmit the signal from an NTL remote (but we use
> Tivo and that works, so not a problem for us). What concerns me more
> is that whenever the microwave is on (which is about as far away in
> the house as it could be), the picture and sound go bananas.

That's because a microwave oven operates on the same 2.4GHz ISM band. And
no matter how good the seals on the thing are, a few milliwatts will still
leak out. Enough to interfere with things like video-senders operating on
the same band.

--
Michael Turner
Email (ROT13)
zvxr.gheare1963@ivetva.arg