Steady progress. Today I re-wired the transmitter, which I originally built in America. The two power transformer primaries are now in series for 240V. I also tuned up for a few seconds into a crude but fun dummy load (an incandescent bulb).

The original U.S. (117VAC) jumper settings (the two black wires):

The new setting for 240VAC:

Powering up. The neon indicator, which is 117V, is wired across only one of the primaries:

Key down and tune-up! The bulb is 117V, 15W incandescent:

73 de Martin, KB1WSY (for now)