About BI4OAE
bi4oae.top is an amateur radio knowledge site operated by BI4OAE, a Class C amateur radio licensee based in Shandong, China (ITU Region 3, zone 4). The site exists because most amateur radio material online is either a scan of a 1970s manual or a forum thread from 2009 — neither answers "what do I actually do on Monday".
What you will find here
- Practical shortwave / HF operating guides, written from on-air experience
- Band plans, propagation-window references and digital-mode how-tos
- Antenna and rig notes, including what failed and why
- Emergency-communication practice and the regulatory basics that apply in China
How the content is produced
Articles are drafted with AI assistance and then revised, fact-checked and expanded by the operator. Where a claim rests on a regulation, a datasheet or a contest rule, the source is listed at the end of the article. Screenshots, measurements and on-air logs are the operator's own.
The site does not sell equipment and takes no manufacturer sponsorship. Nothing here is a substitute for the licence conditions that apply in your own country.
The two editions
The English edition lives at /. The Chinese archive — the
original edition of this site — lives at /zh/. The two
are linked with hreflang annotations so search engines treat
them as language variants of the same site rather than duplicates.
Contact
Corrections and questions: see the contact page.