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A comment on Show HN: Open-Source International Space Station Tracker ESP32/Arduino for $20. Parent comment

Re:Show HN: Open-Source International Space Station Tracker ... by calgoo on Monday June 30, 2025 @12:53PM (#44425435)
A SDR could be cool too, and basically let it connect live to ISS when the GPS confirms its above. CPU and memory might be an issue, but getting some 145Mhz / 437Mhz SDR and an external antenna jack on the board could be a cool way of letting the device listen in when the ISS is above.
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