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Write for CodigoMorse.io

We publish guest articles about Morse code, telegraphy, ciphers, radio, the history of communication and accessibility. If you know one of those subjects well and can explain it clearly, we would like to hear from you. Here is what we accept, what we do not, and how to pitch.

Reach real readers

Learners, radio operators, teachers, puzzle fans and developers come here every day looking for exactly the subjects you would write about.

Permanent, dofollow

Accepted articles stay online permanently, links are dofollow, and nothing is tagged as sponsored.

Your byline

Publish under your name with a short bio, or anonymously if you prefer. You keep the copyright.

Who we publish

Freelance writers, bloggers, hobbyists and professionals who know their subject: amateur radio operators, teachers, historians, scouts, cryptography enthusiasts, accessibility specialists and developers. We also accept well-researched articles from content writers and agencies writing on behalf of a client, as long as the piece itself is genuinely useful and the client link is relevant (see the link policy below).

What matters is not credentials but whether the article answers a real question better than what already exists. Before you pitch, skim our latest articles and the guides on history, learning Morse, the Caesar cipher and the NATO alphabet, so you can add to them rather than repeat them.

Topics we accept

  • Morse code: history, Samuel Morse and Alfred Vail, the Titanic and SOS, learning methods, timing, famous messages, Morse in film and music, Morse code jewelry and tattoos.
  • Telegraphy: landline and wireless telegraphs, cable networks, telegraph operators, railroad telegraphy, the end of commercial Morse service.
  • Ciphers and codes: Caesar and substitution ciphers, Vigenère, Enigma, binary and ASCII, codebreaking stories, classroom cryptography.
  • Radio: amateur radio and CW operating, antennas and keys, contests, emergency communication, aviation beacons, maritime radio.
  • Communication history: semaphore, signal lamps, flag codes, the phonetic alphabet, early telephony, how standards like the ITU table came to be.
  • Accessibility: Morse as an input method (Gboard, switch access), assistive communication, how people with limited mobility or speech use Morse today.
  • Education: lesson plans, games for kids, scout activities, memory techniques.

Have a related idea that is not on the list? Pitch it anyway; good writing about a neighboring subject is welcome.

What we do not accept

  • Articles that have already been published elsewhere, including on your own site, or that are spun or AI-generated without real expertise behind them.
  • Thin "top 10" lists, generic how-to pieces that do not go beyond what a chart already shows, or content written only to carry a link.
  • Topics unrelated to communication, codes or radio: casinos, finance, CBD, essay services and similar.
  • Promotional pieces about a product or company. A relevant link in a useful article is fine; an advertisement is not.
  • Pieces that make historical or technical claims without sources.

Guidelines

  • Relevant to our readers. The article must fit the topics above and answer something our readers actually search for.
  • Informative, with real value. It should teach something or solve a problem, not fill space.
  • Original. Written by you, unpublished anywhere else, and not to be republished later.
  • Sourced. Back up dates, statistics and factual claims with reputable sources. We check them.
  • Length. At least 800 words. In-depth guides usually work best at 1,200 words or more.
  • Clear structure. Logical flow, descriptive subheadings (H2/H3), short paragraphs, plain English.
  • Images. Optional. If you include them, you must have the right to use them and provide credit where required. We can also illustrate the piece ourselves.
  • Format. Send a Google Doc link, a .docx or plain Markdown. No PDFs.

Every submission is reviewed before publication. We may suggest changes or edit accepted articles for clarity, accuracy and readability; substantive edits are shown to you first. Submitting an article does not guarantee publication.

Accepted articles are published under these conditions:

  • Dofollow links. Links inside the article are regular dofollow links.
  • No sponsored tag. Neither the article nor its links are marked as sponsored.
  • Permanent publication. The article stays on CodigoMorse.io permanently.
  • One client link. One link to your site or your client, placed naturally in the text, without promotional wording.
  • Two authority links. Two links to authoritative sources, or one internal link to a CodigoMorse.io page plus one authority link.

If you represent a company, an agency or a client as part of a link-building strategy, say so in your email. We will reply with the details and conditions that apply to your case.

How to pitch

Email [email protected] with the subject line "Guest post: [Title]". You can send a short pitch first (title, two or three sentences on the angle, and why you are the right person to write it) or the finished article. Include:

  1. The title

    Specific and searchable. "How the Titanic's operators sent CQD and SOS" beats "Morse code history".

  2. The article or outline

    A link to a Google Doc, a .docx attachment or Markdown in the email body.

  3. Author details (optional)

    Your name, a one- or two-sentence bio and a link, if you want a byline.

  4. Any client disclosure

    If the piece includes a client link, say which one and for whom.

We normally reply within 5 business days. If we accept, we will confirm the publication date and send you the link when the article goes live.

Article ideas

Looking for an angle?

Subjects we would gladly publish and have not covered in depth yet.

A day in the life of a telegraph operator, 1900

Working conditions, speeds, the "glass arm" injury, and what messages actually cost.

Morse as an accessibility input method

Real experience with Gboard Morse, switch access or eye-blink communication.

Your first CW contact

A first-person account for new amateur radio operators, with the mistakes to avoid.

Breaking a Vigenère cipher by hand

Kasiski examination and frequency analysis, step by step, with a worked example.

Signal lamps in the modern navy

Why flashing light is still trained and used, and how it differs from radio Morse.

A Morse code lesson plan for grade 5

Objectives, materials, a 45-minute structure and a printable worksheet.

FAQ

Frequently asked questions

Do you pay for guest posts?

No. Guest articles are published free of charge and we do not pay for them. What you get is a permanent, dofollow article with your byline in front of a relevant audience.

Do you charge for publishing?

Not for genuine editorial contributions. If you are pitching on behalf of a client as part of a link-building campaign, say so in your email and we will reply with the conditions that apply.

Can I republish the article on my own blog later?

No. We only publish original, exclusive content. You may link to it and quote an excerpt from it.

How long until I hear back?

Usually within 5 business days. If you have not heard from us after that, feel free to follow up on the same thread.

Can I include images or diagrams?

Yes, as long as you own them or have a license, and you supply the credit. We can also create illustrations for accepted articles.

Do you accept articles in Spanish or Portuguese?

Yes. The site has Spanish and Portuguese editions with the same guidelines. Mention the language in your pitch.

Ready to send your article?

Email the title and the finished piece, plus your author details if you want a byline. We reply within 5 business days.