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Homeowner Forum / Home Automation / July 2006



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X10 RF equipment - is there a difference between UK and US gear?

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keiron99@hotmail.com - 20 Jul 2006 08:25 GMT
I'm in the UK and have many X10 items working succesfully.  I now want
some extra bits and bobs, specifically motion sensors and key fob
remotes.  They are a horrendous price in the UK but online in the US
and from US based ebayers, quite affordable.  My question is: will
those X10 RF transmitters for the US market work with my exisiting UK
gear?
Dave Houston - 20 Jul 2006 11:35 GMT
You haven't provided enough detail about which gear you want them to work
with.

The RF frequency used in North America is 310MHz. Europe uses 433.92MHz.
(Until about 5-6 years ago the UK used 418MHz but since then uses
433.92MHz.) European devices that receive RF will not work with devices that
transmit 310MHz.

Europe allows much, much higher RF output power so range will be better when
using devices made for Europe.

>I'm in the UK and have many X10 items working succesfully.  I now want
>some extra bits and bobs, specifically motion sensors and key fob
>remotes.  They are a horrendous price in the UK but online in the US
>and from US based ebayers, quite affordable.  My question is: will
>those X10 RF transmitters for the US market work with my exisiting UK
>gear?
keiron99@hotmail.com - 20 Jul 2006 12:36 GMT
> You haven't provided enough detail about which gear you want them to work
> with.
[quoted text clipped - 3 lines]
> 433.92MHz.) European devices that receive RF will not work with devices that
> transmit 310MHz.

Looks like my plan won't work then!  I just have basic dimmer switches,
lamp modules and RF trasceivers and key fobs.

Rip off Britain...
Dave Houston - 20 Jul 2006 14:51 GMT
Your transceivers will only work with European transmitters.

You can modify a transceiver made for the USA to work with 230V. You can
find plans on the web.

For input to a PC, the MR26A (310MHz) and MR26E(433.92MHz) are powered from
the RS232 port so no conversion is needed.

>> You haven't provided enough detail about which gear you want them to work
>> with.
[quoted text clipped - 8 lines]
>
>Rip off Britain...
keiron99@hotmail.com - 21 Jul 2006 09:21 GMT
> Your transceivers will only work with European transmitters.
>
> You can modify a transceiver made for the USA to work with 230V. You can
> find plans on the web.

Thanks - but that's beyond my capabilities. Know of anywhere I could
get one already modified?
Dave Houston - 21 Jul 2006 11:14 GMT
No.

>Thanks - but that's beyond my capabilities. Know of anywhere I could
>get one already modified?
Charles Sullivan - 23 Jul 2006 08:32 GMT
Has anyone outside North America tried plugging a TM751 or RR501 into one
of those 240V->120V travel voltage adapters - the ones that are actually
transformers (usually autotransformers) and not switching converters?

I imagine the question is whether there's enough coupling between
primary and secondary at 120KHz without having to add capacitance.

> Your transceivers will only work with European transmitters.
>
[quoted text clipped - 16 lines]
>>
>>Rip off Britain...
 
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