Catalogue record · hackernews
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通过听音学习 Morse code，提供真实的 CW 音频、键盘电报键和每日练习，无需账号和广告，支持离线使用
Seen on hackernews · last checked 2026-10-25.
The teardown — how it actually charges, which mechanism was found, and the seam worth taking — is in the daily letter. This page carries the record and the signals so search engines and link previews have something real to read; the judgement stays with the readers who asked for it.
Get the daily letterThe same record sits in the full catalogue, where every entry can be searched and filtered by the signals above.