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PostPosted: 2008-04-28 21:42:49
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When DECT phones appeared, I recall concerns were voiced about a
possible threat to health from the radiation, which was claimed to be
more dangerous than that from mobiles. Partly for this reason, I
bought analog cordless phones. Are there any boffins out there who
can explain the basics of cordless phone radiation to me and,
ideally, shed some light on the safety issue? And am I right to
assume that analog phones are quite different to DECT ones in this
respect and, consequently, safer?

TIA,
--
Martyn Tindall
Leeds, England, United Kingdom


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PostPosted: 2008-04-29 15:43:09
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Martyn Tindall wrote in
message news:48163fb8.1401444@news.individual.net...
> When DECT phones appeared, I recall concerns were voiced about a
> possible threat to health from the radiation, which was claimed to be
> more dangerous than that from mobiles. Partly for this reason, I
> bought analog cordless phones. Are there any boffins out there who
> can explain the basics of cordless phone radiation to me and,
> ideally, shed some light on the safety issue? And am I right to
> assume that analog phones are quite different to DECT ones in this
> respect and, consequently, safer?

You may find this site interesting:

http://www.radio-electronics.com/info/wireless/dect/dect basics.php

I appreciate it doesnt answer your main questions but it gives an overview
of the workings of DECT phones.


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PostPosted: 2008-04-29 18:58:09
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Martyn Tindall wrote in
message news:48163fb8.1401444@news.individual.net...
> When DECT phones appeared, I recall concerns were voiced about a
> possible threat to health from the radiation, which was claimed to be
> more dangerous than that from mobiles. Partly for this reason, I
> bought analog cordless phones. Are there any boffins out there who
> can explain the basics of cordless phone radiation to me and,
> ideally, shed some light on the safety issue? And am I right to
> assume that analog phones are quite different to DECT ones in this
> respect and, consequently, safer?
>
> TIA,
> --
> Martyn Tindall
> Leeds, England, United Kingdom

Any radiation exposure for long periods of time will cause harm. It doesnt
matter what mode the transmission is, whether its AM/FM/SSB/CW/DATA MODES.
What matters is power level and how close you are to it, also for how long
and what frequencies are used. Warnings have been on transmitters for at
least 60+ years!
Dont be too worried or paranoid, I havent seen any real evidence that a
cordless phone has made anyone ill or killed them yet. Thats excluding
scroungers after money or people who will find an excuse for everything.


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PostPosted: 2008-04-29 20:43:27
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On Tue, 29 Apr 2008 18:58:09 +0100, Rob wrote:

>
>Martyn Tindall wrote in
>message news:48163fb8.1401444@news.individual.net...
>> When DECT phones appeared, I recall concerns were voiced about a
>> possible threat to health from the radiation, which was claimed to be
>> more dangerous than that from mobiles. Partly for this reason, I
>> bought analog cordless phones. Are there any boffins out there who
>> can explain the basics of cordless phone radiation to me and,
>> ideally, shed some light on the safety issue? And am I right to
>> assume that analog phones are quite different to DECT ones in this
>> respect and, consequently, safer?
>>
>> TIA,
>> --
>> Martyn Tindall
>> Leeds, England, United Kingdom
>
>Any radiation exposure for long periods of time will cause harm. It doesnt
>matter what mode the transmission is, whether its AM/FM/SSB/CW/DATA MODES.
>What matters is power level and how close you are to it, also for how long
>and what frequencies are used. Warnings have been on transmitters for at
>least 60+ years!
>Dont be too worried or paranoid, I havent seen any real evidence that a
>cordless phone has made anyone ill or killed them yet. Thats excluding
>scroungers after money or people who will find an excuse for everything.
>
>
Thanks, that seems reasonable. I dont pretend to understand the
technology, but I remember reading that the power level used by DECT
phones is high and remains high for the duration of the call.
Apparently mobiles adjust the level down to the minimum required to
maintain contact with the mast. Is that your understanding?

Regards,
Martyn
--
Martyn Tindall
Leeds, England, United Kingdom


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PostPosted: 2008-04-29 20:43:29
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Joined: 2008-04-29 20:43:29
On Tue, 29 Apr 2008 15:43:09 GMT, John Riggs
wrote:

>
>Martyn Tindall wrote in
>message news:48163fb8.1401444@news.individual.net...
>> When DECT phones appeared, I recall concerns were voiced about a
>> possible threat to health from the radiation, which was claimed to be
>> more dangerous than that from mobiles. Partly for this reason, I
>> bought analog cordless phones. Are there any boffins out there who
>> can explain the basics of cordless phone radiation to me and,
>> ideally, shed some light on the safety issue? And am I right to
>> assume that analog phones are quite different to DECT ones in this
>> respect and, consequently, safer?
>
>You may find this site interesting:
>
>http://www.radio-electronics.com/info/wireless/dect/dect basics.php
>
>I appreciate it doesnt answer your main questions but it gives an overview
>of the workings of DECT phones.
>
Thanks, Ill have a look.

Regards,
Martyn
--
Martyn Tindall
Leeds, England, United Kingdom


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PostPosted: 2008-04-30 12:26:46
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Joined: 2008-04-30 12:26:46
Martyn Tindall wrote in
message news:48163fb8.1401444@news.individual.net...
> When DECT phones appeared, I recall concerns were voiced about a
> possible threat to health from the radiation, which was claimed to be
> more dangerous than that from mobiles. Partly for this reason, I
> bought analog cordless phones. Are there any boffins out there who
> can explain the basics of cordless phone radiation to me and,
> ideally, shed some light on the safety issue? And am I right to
> assume that analog phones are quite different to DECT ones in this
> respect and, consequently, safer?
>
> TIA,
> --
> Martyn Tindall
> Leeds, England, United Kingdom

Analog cordless phones should not be used as they can be picked up on an
ordinary radio scanner (29 & 31 MHz).


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PostPosted: 2008-04-30 22:18:57
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Joined: 2008-04-30 22:18:57
In article , Mike GW8IJT
scribeth thus
>Martyn Tindall wrote in
>message news:48163fb8.1401444@news.individual.net...
>> When DECT phones appeared, I recall concerns were voiced about a
>> possible threat to health from the radiation, which was claimed to be
>> more dangerous than that from mobiles. Partly for this reason, I
>> bought analog cordless phones. Are there any boffins out there who
>> can explain the basics of cordless phone radiation to me and,
>> ideally, shed some light on the safety issue? And am I right to
>> assume that analog phones are quite different to DECT ones in this
>> respect and, consequently, safer?
>>
>> TIA,
>> --
>> Martyn Tindall
>> Leeds, England, United Kingdom
>
>Analog cordless phones should not be used as they can be picked up on an
>ordinary radio scanner (29 & 31 MHz).
>
>

1.8 odd and 49 I believe?..
--
Tony Sayer


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PostPosted: 2008-05-01 11:32:12
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Joined: 2008-05-01 11:32:12
tony sayer wrote in message
news:SkY3HRSBJOGIFwqu@bancom.co.uk...
> In article , Mike GW8IJT
> scribeth thus
>>Martyn Tindall wrote in
>>message news:48163fb8.1401444@news.individual.net...
>>> When DECT phones appeared, I recall concerns were voiced about a
>>> possible threat to health from the radiation, which was claimed to
>>> be
>>> more dangerous than that from mobiles. Partly for this reason, I
>>> bought analog cordless phones. Are there any boffins out there who
>>> can explain the basics of cordless phone radiation to me and,
>>> ideally, shed some light on the safety issue? And am I right to
>>> assume that analog phones are quite different to DECT ones in this
>>> respect and, consequently, safer?
>>>
>>> TIA,
>>> --
>>> Martyn Tindall
>>> Leeds, England, United Kingdom
>>
>>Analog cordless phones should not be used as they can be picked up on
>>an
>>ordinary radio scanner (29 & 31 MHz).
>>
>>
>
> 1.8 odd and 49 I believe?..

The original CT1 phones used 1.6/1.7 MHz & 47 MHz.

Eight more channel pairs were later added at 31 & 39/40 MHz.

http://www.ofcom.org.uk/static/archive/ra/publication/ra info/ra193.htm

Martin


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