QB50 precursor amateur radio operator page

Welcome to the amateur radio operator page for the QB50 precursor missions. This mission is comprised of two satellites: QB50p1 and QB50p2

After deployment from the Quadpack, the satellite will be transmitting its CW beacon.

Contact information / reception reports

To get in touch with the operations team, please use the following e-mail address: operations@isispace.nl

We would appreciate to receive reception reports or recordings of the downlink signal, please include the following information in your report:

We will also be present in the #cubesat channel on the Freenode IRC network (irc.freenode.net)

To upload data received from either satellite, please go to upload.qb50.eu. For any questions regarding this upload page please contact scholz@vki.ac.be.

Satellite downlink overview
CW / Morse beacon
CW beacon content

You can use the CW beacon content decoder to translate the CW beacon characters to engineering values.

AX.25 beacon
You can use the AX.25 beacon content decoder to translate the nominal mode beacon content to engineering values. Please note that the a beacon consists of two AX.25 frames, both of which are defined in the content decoder.

Transponder information

The transponders will be activated after main mission completion


QB50p1 carries the FUNcube-3 400 mW inverting linear 435/145 MHz transponder provided by AMSAT-NL with support from AMSAT-UK.


QB50p2 carries a 435/145 MHz FM transponder and FX25 data transmitter from AMSAT-Francophone.