How HamSphere Works

HamSphere is a virtual Ham Radio Transceiver. Once installed, you will be able to communicate with thousands of Amateur Radio operators and Radio Enthusiasts in over 200 countries around the world. You can even use HamSphere without a Ham Radio license by using a special HamSphere call sign. HamSphere is a highly realistic shortwave simulation based on SDR (Software Defined Radio) technology.

Here is the link:
http://www.hamsphere.com/?gclid=CJO_9rCcgLwCFUmWtAodXVoA1w