Show HN: Centauri Academy – a free ham radio license study site I built at 15

2026-11-01来源 Hacker News NewEnglish

Article URL: https://centauriacademy.app/

Comments URL: https://news.ycombinator.com/item?id=50321094

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原文：https://www.a8q9.cn/en/article/show-hn-centauri-academy-a-free-ham-radio-license-study-site-i-built-at-15-5b3882.html

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