HamSphere

HamSphere is a virtual Ham Radio Transceiver that works on any Java-driven system. It can be used by licensed and unlicensed radio enthusiasts.

In order to be able to download and use the program, you will need to register on the site. If you are an unlicensed operator, they will assign you a "call sign" - the name through which you will be known when operating HamSphere. You must pass a shot exam to be approved as an operator, through a multiple-choice test hosted on the developer’s site. The answers to the questions are included in two separate pages that you can read while reviewing the exam.

When using this program you will be able to communicate with thousands of Amateur Radio operators from over 160 countries worldwide, and all you will ever need is a multimedia PC and an Internet connection.

HamSphere supports Voice (SSB) and CW (Morse code), though SSTV and digital modes will not work well in HamSphere 2.0. The program also offers a chat window that you can use to exchange messages with other operators around the world.