> The easiest mod is to remove 2xBS170 and run on one BS170. > QCX will be in QRPp range now with this mod.
No... all you do then is fry the BS170. The point of multiple BS170's is less about reducing the effective switch "on" resistance due to paralleling multiple devices. It's more to do with the fact that the power dissipation rating of one device is inadequate. Paralleling multiple devices shares the power dissipation. If you use only ONE BS170 in a QCX then the power output will reduce slightly (due to the higher "ON" resistance of only one) but all the power dissipation will end up in that one transistor, and it will suffer untold pain and suffering.?
