While you are at it Hans.....
I often considered adding 3 leds to show which LPF has been selected in the QDX. Sometimes while diagnosing and the fact I am experimenting with different bands, sometimes I have set the Band Config wrong LPF for a band and wondered what has gone wrong. I presume the onboard LPF test points would not power leds directly, so a couple of extra drivers would be needed....just a thought.
73 Ken G4APB