Susan Saltz on March 3, at 9: To determine how much lifting gas you need, this chart will come in handy again. Lastly, a little PVC glue and teflon tape will seal up your joints. Missions to the Edge of Space". If a balloon position is lost or not reported after 30 minutes, notification is immediately provided to the Cleveland ARTCC, as requested. We notify them of: This does not include the weight of the balloon.
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Amateur Radio High Altitude Ballooning