I used to be a SWL from 1974 to 2004 more or less, mainly on the tropical bands (90 and 60 m) which for me were the most exciting bands. Today they are practically dead
. I think that medium wave and longwave dx-ing is probably the most interesting listening activity today. These bands are becoming less crowdeded and open interesting possibilities. I read that european longwave stations are routinely received in the US, likewise
AM US and SA stations are being received in Europe. Non-directional-beacon NDB DX-ing has also many adepts. Another interesting DX-ing is Navtex. Paradoxically one can have excellent antennas for LW and MW in little space, like loops and the PA0RDT miniwhip. A good place to get serious up-to-date information is CumbreDx on Yahoo groups.
73 Giovanni IZ5PQT