MOSFET crystal sets

Some years ago, QST had an article on a crystal set based on a zero bias MOSFET.  Although I have yet to try this sort of design I have no doubt they will work well.  Crystal sets derive all their power from the TX and in the past I have achieved some remarkable (well for me!) results.  Best was receiving Radio Australia (from Australia) as well as some amateur Gs on 80m and 160m at a considerable distance. In the USA some 75m AM amateur stations are regularly heard at great distances.

See http://makearadio.com/visitorsprojects/ralf-mosfet.php .