A long duration foil party balloon transmitting Contestia 8/250 telemetry data on 434.500 MHz USB was launched on Friday, April 18 from Silverstone in the UK by radio amateur Leo Bodnar M0XER. Its seven day journey has taken it to Iceland, Greenland across the Norwegian Sea and down into Finland.
According to the current projected course it may continue south into Russia and travel close to the Ukrainian border.
Depending on the altitude, the balloon could have a radio range of 300-500 km. See the current track of the balloon at http://spacenear.us/tracker/?filter=B-46
Balloon: 90cm Qualatex foil party balloon
Payload: 12 grams solar powered tracker
Telemetry: 434.500 MHz, USB, vertical polarisation, Contestia 8/250
Transmission contains two lines of telemetry every 4 minutes and lasts about 1 minute
Time between telemetry data is filled with beeps at 3 sec intervals.
Enable RxID (RSID) to automatically track the signal drift
Leo Bodnar M0XER balloons
You can see online real time tracks and frequencies of balloons at http://spacenear.us/tracker/
Download the dl-fldigi software from
Listen to balloons online (when in range of south-east UK) from anywhere in the world with the SUWS 434 MHz WebSDR (select USB) https://amsat-uk.org/2013/12/28/websdr-for-434-and-1296-mhz/
Beginners Guide to Tracking using dl-fldigi http://ukhas.org.uk/guides:tracking_guide
Check the #highaltitude IRC channel for chat about launches. A web client is available at