Pieter Ibelings on Twitter: "Made progress on the Muon Solar Beacon for drifting buoys & stationary sites. Now w/ Iridium modem, WSPR TX, Arduino, ATSAMD21, 2x space rated Solar cells, 2x18650 batts,
![RockBLOCK 9603 with USB Cable - Iridium Satellite Modem Bundle : ID 4521 : $299.95 : Adafruit Industries, Unique & fun DIY electronics and kits RockBLOCK 9603 with USB Cable - Iridium Satellite Modem Bundle : ID 4521 : $299.95 : Adafruit Industries, Unique & fun DIY electronics and kits](https://cdn-shop.adafruit.com/970x728/4521-02.jpg)
RockBLOCK 9603 with USB Cable - Iridium Satellite Modem Bundle : ID 4521 : $299.95 : Adafruit Industries, Unique & fun DIY electronics and kits
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