Launch of the PW-Sat2 – 4th Polish satellite is expected to take place as soon as 19th November 2018! During its  40-day long mission PW-Sat2 will operate in amateur bands (2 m and 70 cm). Downlink signal of PW-Sat2 will be available for everyone to receive, decode and interpret data! Together with SoftwareMill we’re publishing a set of tools that are going to help you with this task.

PW-Sat2 ground station antennae at Warsaw University of Technology.

PW-Sat2 is one of the payloads in SpaceFlight SSO-A The SmallSat Express mission aboard SpaceX’s Falcon 9 rocket. Just few hours after separation from the launch vehicle it will start to transmit beacon frames full of telemetric data in 60 seconds intervals. Downlink signal of PW-Sat2 will be available for everyone to receive, decode and interpret data with our open-source GNU Radio based tools and web service to collect all the data. Step-by-step quick guide can be found here:

To encourage you to listen to PW-Sat2 and honor your contribution we are going to issue QSL cards for every HAM radio who will publish on at least one correct PW-Sat2 frame. Additionally we prepared contest in three categories. Shortly after mission we will reveal the winners and reward with packs of PW-Sat2-related gadgets! For more details please see:

We’re extremely grateful for the support of SoftwareMill software house. They developed our special web application that’s available on for everyone to use. We hope that it’s going to be used not only by the radioamateurs, but also people who have never been interested in receiving satellite signals. The app allows to follow satellite status and collected date almost with no delay.

Webapp developed by the SoftwareMill that allows to follow and analyze PW-Sat2 data.

We encourage you to try the software (desktop and cloud parts) right now! In case of any problems – don’t hesitate to contact (Messenger, in comments etc.), create an issue on GitHub issues or simply ask via e-mail at!

Up to date information about mission status will be published on our Twitter profile – don’t miss anything, follow us: