ISS to Earth channel: HAMTV transmitter and receiver

HAMTV is a communication channel to show students life and experiments on board the International Space Station (ISS)!

HAMTV is an idea by AMSAT Italia. This cultural association of advanced radio communication enthusiasts mainly focused on equipment between Satellites and earth, designed and promoted a challenging application. In short, the purpose was to have a communication channel able to show the students of multiple school levels the life and the experiments made by the astronauts on board the International Space Station (ISS). The project started at the Hamvention in Daytona in 2012 and was implemented in the following years. It successfully worked since then.

Both transmitter and receiver sections are implemented by means of the overwhelming technology of Kuhne Electronic, an RF company based in Germany

The DVB-S standard television transmitter mounted on the International Space Station uses the final amplifier KU PA 2325 B. While the ground receiving stations use the KU LNC 25 TM downconverter.

Here below of few pictures and block diagrams of the system.

Samantha Cristoforetti in the Columbus module of the ISS

Below, transmitter section:

The main modules:

More information on the system is available at

This successful implementation demonstrates the excellent quality of the design and of Kuhne’s technology. As part of the continuous improvement process, engineering at Kuhne is performing R&D on low noise, wide bandwidth, high power, high-reliability products.

In case of questions or further details, please do not hesitate to contact the experts at