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HNisCIS | 25 days ago

These pico balloons weigh grams.

discuss

order

m4rtink|25 days ago

Yeah, I think ours was less than 10 grams.

As rules go, IIRC at least here in the Czech Republic anything below 100 g is unregulated, you just need to have a licensed amateur radio operator, so that the probe can broadcast in the 20 meter WSPR band under his callsign.

jacquesm|25 days ago

Parent to mine mentioned 4 pounds.