W7QO-9 Balloon Information
W7QO-9 went silent 2016-5-10 over Turkey. The last
telemetry packet showed everything as nominal so one can only speculate
what may have occured.
launched an experimental balloon containing a 10mW 20m
WSPR and 2m APRS telemetry transmitter from near Atlanta Georgia USA
.April 26, 2016.
As of May 8, 2016 it is still going strong and is wandering around over Europe at ~12.5km.
is a track map capture over the entrie flight from launch to 2016-5-8.
Location and telemetry data are mined from the WSPR database and
posted to the aprs network. Note the balloon is solar powered so
goes to sleep at night thus the gaps in location. It also stops
transmitting over certain countries that do not allow amateur
aircraft transmissions. (ie the UK and some others)
Here is the WSPR map on 20m for W7QO on 2016-5-8
is a picture of the W7QO payload. The white cylindrical
objects are supercaps not a battery for storing solar power. The
GPS receiver is at the top. MPPT regulator and transmitter at the
The whole payload is < 10g.
To track on WSPR, just enter W7QO and 20 meters.
To view the APRS map enter W7QO-9 and adjust zoom and start/stop times
Remember it only transmits during its local sunlight periods.
The goal is to stay up as long as possible and circle the globe a few times.