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CC2520: CC2520 spurious FCC

Part Number: CC2520


Need some help about spurious issue.

I tried to be certificated under FCC and Taiwan radio certification, but I have to reduce power level to 1(-7dbm).

I've found that the spurious around 2.34GHz and 2.35GHz is about 50dbuV even at level 1(-7dbm).

Also I've checked CC2520EVB(evaluation board) , but the spurious level is similar. (attached is at level 2 (-4dbm))

Is it the reasonable result or no ?

CC2520 datasheet shows -41dbm (= 66dbuV) at level 4(0dbm) at 2485.3MHz and above (FCC restricted band). 

"2485.3MHz and above" also include 2.34GHz and 2.35GHz, not sure....