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Is there any point to buying a really powerful router with huge antennas and a great range, if the wireless adapter on my laptop is weak and can not broadcast it's signal very far?

So basically I would be able to receive a great signal from the router, but my computer won't be able to send anything back to the router.

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up vote 2 down vote accepted

It depends. Bigger antennas help your AP speak louder, yes, but they help it listen better as well. At some point the signal reaching your AP from your device will be indistinguishable from background noise and you'll need to start talking louder from your device.

You can stave this off for a while by using directional antennas on one or both ends, but that's better for fixed locations.

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IME, high power access points (with or without a router is irrelevant) are primarily of use when using two or more access points to construct a wireless link - usually one that you are not having any laptops connect to. Fiber is always preferable to one of those, but sometimes you don't get a choice.

You may get some benefit from using better antennas, since (as mentioned by jerm) they help with reception as well as transmission. Using better antennas and turning power DOWN is often helpful, or at least as useful and not as annoying to anyone else near you (for whom your high-power signal is just high-level noise.)

If your desired result is better wireless coverage, rather than crank up a high power access point, you will usually be far better off to run wiring and place additional access points (quite possibly with the power turned down, unless you are in the middle of nowhere.) Don't link access points by wireless - that instantly cuts your wireless performance potential by half or more - use wire (if between buildings, use fiber) to put them on the network, and only use the wireless to link to your mobile wireless devices (such as your laptop.) Give any device that sits still and has a wired port a wire.

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