【每一个业余无线电爱好者都应该掌握的标准字母解释法-哔哩哔哩】 https://b23.tv/SmSycee
This is great.
Not only standard skills are required, but also a variety of non-standard skills.
BG3RZA First, I will crawl; then, I will learn to run.
Thank you for sharing, 73.
BA3QU 😅
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