A040 is the best that amateur satellite technology can offer to radio amateurs from all over the world dedicated to activity via satellite. It deals with a satellite in elliptical order capable of allowing connections with every continent. It's passage last a few hours and it is not necessary to have a pursuit antenna system, it is enough to move the antenna every 30 minutes.

For more information visit http://www.amsat.org or http://www.amsat-dl.org, you will find all the necessary information.

Some WAV files about my AO-40 activity

AO-40-japan-090602 QSO with some JA OM

AO-40-t88zf-030702 QSO with Micronesia

AO-40-session-300702 a typical work session on AO-40

Satellite dishes for receiving AO-40

Here are some photos of satellite dishes that I have used to receive AO-40 signal: