I totally agree with Hans here on the L401. Deleting the band pass filter in QMX would, IMO, ?probably turn it into a uSDX! With all the respect to their unique design disclosing the Atmega processor's capabilities with the right software, the uSDX ?family ( in its ?multitude of incarnations, including the (tr)u)SDX) has one huge flaw- a horrible front-end due to lack of BPF. I've compared once, the behaviour of my truSDX vs my 20m QCX ?in front of the strong signals, and the results were devastating for the uSDX. And the performance improved a lot when I hooked the uSDX to my EFHW antenna with tuned (resonant) matching unit, which was acting also, in this case, as an external BPF. So, I would grant the deleting of L401 in QMX ?"The Worst Mod of the Year" award! :) 73! Linas LY2H
