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Remote control by radio
Remote control by radio
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Old 20th September 2005, 08:05 AM   #1
peranders is offline peranders  Sweden
Electrons are yellow and more is better!
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Remote control by radio
Default Remote control by radio

This is the problem:

I'm going to make a remote control for automotive which I want to be good worldwide. Slow dataspeed, it's just wireless pushbuttons.

Is there any frequency that will work worldwide, 2.4 GHz, 433, 868, 923 MHz? Suitable IC's?

Atmel, Chipcom and Nordic have, any more good alternatives?
/Per-Anders (my first name) or P-A as my friends call me
PA03 LM4780 amplifier group buy, SIGN UP HERE for the group buy 0 boards left. 118 paid.
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Old 20th September 2005, 09:15 AM   #2
darkfenriz is offline darkfenriz  Poland
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2.4GHz should be free to use all over the world. Apart from WiFi and so on this band is too close to microwave oven frequency to be used for any commertial/military purposes.
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Old 21st September 2005, 02:50 AM   #3
TwoSpoons is offline TwoSpoons  New Zealand
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Micrel, Microchip (Keeloq series), and Hitachi for chips. 305 MHz is also common.

There are also lots of unbelievably cheap transmitters and receivers available from China. The ones I was using were US 50c for a SAW transmitter, and $US 2 for a receiver. (at 305MHz).

You have access to an RF spectrum analyser, I hope. You're going to need one to get the antenna working.
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