Congratulations Joe and Markus! A new record, I make
that 4555 km and with a dB or two to spare.
That's really is a milestone for coherent at MF. I wonder
if the propagation would stand longer symbols at that
distance. Perhaps try 2 seconds?
> 00:30 2.2 0.8 0
Only losing 1.4 dB at most. Maybe things get better at
very long range.
The next target would be 5418 km to Domenico.
> Consider using a Tee input low-pass filter,
I was using a Pi. The next build will use a T if I'm
not using an antenna loading coil.
> A shunt C input will give large current spikes when hit
> with the square wave from a voltage mode Class-D PA
That explains then, why the spike went away when I reconfigured
for current mode.
Now it is all beginning to add up. My next attempt at a PA
hopefully wont have so many elementary mistakes.