It is also my experience that stations in China and Southeast Asia in general do not hear well at all on the low bands. One exception is BG2AUE. I have worked him multiple times on 80m CW from my QTH in the Boston area. He hears extremely well on 80. Every single time I've worked him there, he's been very weak but he's always answered me immediately. I've also seen him spotted a few times on 160 but have yet to hear him there. That's an extremely difficult path from W1 on 160. In fact, zone 24 is one of the two remaining zones I need for 160 WAZ, the other zone being 26.
73, John W1FV _________________ Searchable Archives: http://www.contesting.com/_topband - Topband Reflector