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The various RTL8187-based wifi adapters I have are rated 300mw, 500mw, 1000mw, 1500mw, etc, on their product packaging. Are they all correct or are all of them lying? What's the real (or normal) power-rating of a wifi adapter based on the RTL8187 chip?

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From my experience, this is perfectly normal. Although I can't answer the second part of your question, it is entirely feasible that the adapters can have different power specifications. – user3463 Jul 28 '10 at 5:38

As far as I know, the chip itself does not determine the power of a WiFi adapter. The chip only produces a signal which is then amplified and broadcast by a transmitter. It is this transmitter which determines the adapter's power.

So what you read is perfectly normal.

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