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Electronics Forum / Electronics / July 2006



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433 MHz RF links

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Andrew Rich - 28 Jul 2006 10:04 GMT
Anyone using these in projects ?

I fired mine up and came to the conclusion that it was picking up garage
door openers and my weather station as well.

Seems it might be better to run it rf on is equal to a space and no rf is a
mark ?

Comments ?

Andrew VK4TEC

vk4tec@tech-software.net
Chris Jones - 28 Jul 2006 23:24 GMT
> Anyone using these in projects ?
>
[quoted text clipped - 9 lines]
>
> vk4tec@tech-software.net

Just imagine what it would be like if the garage door opener and the weather
station did that... (though they couldn't due to battery life, but you get
the idea)

Why not just add some checksums to your data and re-send each message a few
times at random-ish intervals of approx. a few seconds?  A pic or similar
could do the decoding.

Chris
jasen - 29 Jul 2006 06:09 GMT
>> I fired mine up and came to the conclusion that it was picking up garage
>> door openers and my weather station as well.
[quoted text clipped - 11 lines]
> station did that... (though they couldn't due to battery life, but you get
> the idea)

that'd be the way to do it, an idle RS232 line is marking.

Bye.
  Jasen
 
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