On November 1st, 2020 at 10:17 near Stalpu, Buzau we launched a stratospheric balloon. Check out the photos here.

Technical information

  • 1200g latex balloon, filled with approximately 3.2m3 of Helium.
  • Maximum altitude: 34000m.
  • Payload included:
    • Crossband repeater (Retevis RT23). Technical details here.
    • Custom GPS tracker with APRS (VHF), including an onboard data logger.
    • Reprogrammed RS41 radiosonde (UHF), sending APRS, RTTY and CW messages.
    • GPS receiver with data loggers.
    • Video camera.
  • Data recorded in this flight can be downloaded here: Balloon7 Data.

Below is an interactive map view of all the QSOs (red) made through the repeater, together with other confirmed receptions (blue). Use the slider on the top-right of the map to navigate.