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That's still a large amount of weight to carry on a device.

There are 250 class quadcopters that are built for First Person View racing. Races are won and lost because of the difference in a few grams of extra weight.

Any extra weight you add to a device reduces the flight time of the battery.

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I think that quadcopters used for FPV racing generally don't appear in the areas where drone identification would be a need.

I agree, but others may not... White House lawn anyone?

Because of those others we have this problem in the first place.

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