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May28-11, 01:05 PM
P: 310
Another issue is the amount of power you're likely to get from just a micro controller. I believe most micro controllers can only put out 20 mA max, with a square wave that works out to about 50 mW. However, it's very unlikely for a uC output to be impedance matched to the antenna, so the amount of actual transmitted power is probably much lower even than that.