HamSphere is a virtual shortwave tranceiver client that works in Windows, Linux or Mac or any other Java driven system.
It communicates over a simulated Ionosphere called "HamSphere". It covers 6m to 160m Ham band including 11m. It uses double side band modulation and each band is 100 kHz wide.
The system does not emit any RF and it is 100% safe to operate in any country. Everything you hear on the system is part of a big shortwave simulation called "HamSphere".
You will find the system very similar to the shortwave band as it has noises and scratches called QRN as well as unwanted signals called QRM. The propagation is very much like real shortwave. Sometimes the conditions are bad and sometimes they improved quite a bit.
HamSphere can be used by both licensed and unlicensed DX:ers.