> 1km 2.4Ghz wifi antenna's?

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Eximo

Eximo

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Not for omni-directional I would think. That much power would require some hefty licensing and certifications.

Maybe look into remote controlled aircraft equipment? They have the advantage of not having any obstructions, but if you were high up enough you might get away with it.
 
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Eximo

Eximo

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That would require some amazing technology to keep them pointed at each other. Might as well buy a real car at that point.

Would be a fun project, but you would probably need a few grad students and a grant. Probably end up as part of some DARPA project.


 
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jsmithepa

jsmithepa

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Ah, no, am thinking p-to-p just to bridge the two sites, then at the RC site deploy a regular WIFI router. Of course the interested party work out the details. :)
 
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Eximo

Eximo

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2.4Ghz radio/antennae, not necessarily WiFi. Lots of things transmit on that frequency. Which is why something with a 1km range omni-directional would be beyond consumer means. I think most Wifi routers can go up to 30mW. 1km would require some serious power. Been a long while since I delved into radio, but I recall a radio operators license can get you up a 1W at 2.4Ghz, which I think is technically reserved for Metropolitan Area Networks. (Always wanted to set one of those up before high speed internet was common)
 
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MLG_No_Scope

MLG_No_Scope

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okay, il try to be more precise. there is an area around me which there is 1km of free space to drive with an rc car. the question is what radio/antenna or even an wifi extender idk.... . but what would be an good transmitter for that range? it doesnt have to be 1km exact. 300 meters is fine 2 1km +/-
 
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B

bill001g

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I guess you never said what you actually were attempting to do. If your device only works on wifi then there is no likely cost effective solution.

You could I suppose build a network of AP equally spaced over the area.....like your own cell phone tower network. Problem is wifi does not switch well between sources.



 
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Eximo

Eximo

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Let's start over. This RC car is currently controlled how?

Been so long since I messed with them, but didn't they operate on something like 24 or 29Mhz crystals?

I assumed you had a 2.4Ghz transmitter and receiver (which is totally possible today, just not something I have seen) But you actually want to use WiFi, as in IP protocol (yes, I know protocol protocol) to remotely control a car?

There might be some Zigbee kits out there that would work, but that is whole other level of development, with some software writing thrown in for good measure.

If you want long range control I suggest looking into the high end stuff for RC aircraft. They can have impressive ranges.
 
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MLG_No_Scope

MLG_No_Scope

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uhmm..... okay. sorry for now responding lately, was offline for a while. private stuff.

My goal was to try to control this RC car over an raspberry pi. via an wifi extender, antenna, receiver or over an sim-card.

and no, i don't have an 2.4 Ghz transmitter and receiver.

and the best solution would be to use an longe range controller that is build for RC aircrafts?

thanks for all the help already, this helps me a lot.
 
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