10 watts make a lousy reading light but can travel 7,000 km! On September 19 I heard Kanmon Martis Radio 1651 kHz. Kanmon Martis is operated by the Japan Coast Guard and is a maritime traffic information center for the Kanmon Strait near Fukuoka. The signal was quite good in both AM and USB (1649.5). Thanks Takashi Kuroda for identifying the station. Their grounding system must be exceptional.