Mass 434 MHz Balloon Launch Sunday

A typical High Altitude Balloon - Image Credit STRATODEAN

A typical High Altitude Balloon – Image Credit STRATODEAN

There are many 434 MHz balloon launches planned for Sunday, May 24 from Elsworth, Cambridge, wind and weather permitting.

The USB FSK signals from the balloons should be receivable across much of the British Isles.

Provisional frequencies so far are:
434.447 – “ECC1” (PITS) (NTX2B can be reprogrammed)
434.300 – “CHEAPO” (RFM22 can be reprogrammed)
434.395 – “SPARK” (Fixed frequency)
869.500 – “CS4”  (UKHASnet node with GPS)
434.250 – “HL1” (XABEN tracker)
434.350 – “uX0” (XABEN tracker)
434.550 – “uX2” (XABEN tracker)

Some of the launches should be Live Streamed via

The LARDY-PICO balloon will also launch from Primrose Hill, London transmitting 434.647 MHz USB RTTY 50bps 270Hz shift.

For the latest frequency updates and launch status check the UKHAS Google Group. Links for the group and real-time balloon tracking are at

Listen to UK balloon radio signals on 434 MHz USB from anywhere in the world using the online SUWS WebSDR, further details at

Yahoo Group