Cordless Phones


bed phone

There are a wide range of cordless phones on the market around the world, using many different types of radio transmission. They all transmit a radio signal when being used and some transmit all the time!

So, in general it is important to use them carefully, treating the mobile part as you would a mobile phone, and the base station as if it were a mini cell tower - i.e. keep it away from your living area or bedroom.

These devices can be extremely useful but … be aware they can affect your health and sleep patterns, so try living without them for a few days and see if you notice any difference.

 

DECT Cordless Phones

 

A CELL TOWER IN YOUR HOUSE?

Old DECT phones: a source of continuous RF exposure!
In the 1990s there was a mad rush to update all the mobile phone and cordless phone systems to digital. The advantages were many, with much better speech quality and reliable connections without a big external aerial. In Europe the DECT standard was agreed for cordless phones and this at last allowed them to look and feel like a true mobile phone, with systems supporting multiple handsets and intercom type facilities. Unfortunately this is where the potential health problems began - the specification allowed the base station to continuously transmit at full power even when not being used for calls. This was done for the base station to keep in touch with the mobile handsets which would occasionally "wake up" and listen for the signal before going back into power saving sleep mode. The DECT phones only have a range of 10-100M so the power transmitted is not large, but it is a digital pulsed system which seems to adversely affect some people and reportedly can disrupt sleep.


The handsets are relatively safe as they only transmit significantly when being used to make a call, but the transmissions from the base station (the part that connects to your phone line) can adversely affect you, especially if you spend prolonged periods near it (for example its located near your bed), then you will receive far more exposure to the radio signal than is healthy. If you are just using the mobile part of a DECT phone then there is not so much of a problem as you will only be exposed to the strong radio signal for the duration of any call. The signal from the base station in this situation will decrease rapidly as you move away from its location, and hence will have less affect on you. These health problems were recognised by the industry and a new standard was developed which stopped the base stations continuous transmissions - this was named ECO-DECT. As of 2011 most devices on the market are still working to the old DECT standard so you must hunt around if you wish to purchase one of these new DECT systems.

To summarise:
If you want a new cordless phone make sure its "ECO DECT". Try Seimens ECO DECT
If you have an older DECT phone make sure the base station (the fixed part with the phone line attached) is located away from anywhere that would give you prolonged exposure - i.e. away from your bedroom or office.
Treat the DECT phone like a mobile phone and get a headset to reduce exposure to the transmissions during long phone calls.

 

The ECO DECT Gigaset A420A with 25-minute answering machine.

 

Note Beware:- Some manufactures have jumped on the bandwagon and labelled their devices ECO DECT because the manual is made from recycled paper. Read the small print and make sure you buy the correct type. A good example of a ECO DECT devices are the Siemens Gigaset range such as the C420a or Siemens Gigaset C475. If you choose to keep your DECT cordless then at least ensure the base station is located away from any area where you spend a lot of time - especially keep it out of the bedroom where you would have a lot of exposure and likely disrupted sleep.

 

 

 

 

 

 

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