no, I didn't measure the power, because I havn't a power-meter for 2,4 GHz (I just can mesaure SWR and return loss in 2,4 GHz).
But I will measure it with a friend's equipment. (somewere in the www I earlier found an article from someone who measured this particular PA and it was close to 8W. As far as I remember there a two transistors in parallel).
I just made a qualitative test and it seems to "amplify" ;-).
73 de Johannes