My QMX transmits (low power around 0.5 watts) into my fan dipole tuned for the 80 and 40 COAs on all bands from 40m up, but trying on 80m causes an immediate current limit, which suggests a short in the low-pass filter network. Am I right in thinking that LPF0 is only used for 80m, whilst LPF1 and LPF2 are shared 60m,40m and 30m,20m respectively. This would point to a short in LPF0 components from the transmit bias source to ground.
I'll worry about the low output when I have nailed this problem!
And I will be using a dummy load for further tests! I just didn't have one available when my enthusiasm got the better of me...
