Tag Archives: rm

Radiomaster : Advanced Transmitter Guide for Radio Sailors….!!

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As we write, (14 January 2026) our Radio Sailing Beginners Guides to Transmitters have been downloaded globally 1,600 times. 958 of those downloads were for Radiomaster.

Today we have launched our Advanced Radio Sailors’ User Manual for Radiomaster Transmitters. It covers all the very sexy features that many of you have been waiting for.

It has taken time from several Datchet Members to pull all this together.

Instead of publishing a pdf download manual as we have previously, this time we have given the transmitter its own website. Now you can use it from the side of the lake reading from your phone!!

If you look at the website’s menu bar, you can also download our previous Radio Sailing Beginner’s Guides to Flysky, Futaba, and Spektrum (download from USA). We have also included our advanced Futaba User guide which covers the same advanced Radio Sailing features as the new website. All our Transmitter manuals in one, easy-to-find place.

To see it, click on “RADIOS” on the menu bar above.

Advanced Radio Sailor’s Guide to the Futaba Transmitter

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Last year we wrote Beginners Manuals for radio sailors with Radiomaster, Flysky and Futaba transmitters. There is an excellent Spektrum manual from the USA for which we also published the download link. The manuals have been enormously popular and downloaded about 1,500 times in twelve months. Interestingly the most popular is for Radiomaster, followed by the Radio Sailors Manual for Futaba.

We have been busy recently on both Radiomaster and Futaba finding out how to implement some more advanced features for radio sailing, over and above what we all use normally.

These are:-

. Advanced Mainsheet Management

. 4 Position “Pinch and Puff” using joystick plus switch

. VMG Fine Tune for Mainsheet using volume dial control

. Flick Gybe on a Button

. Advanced Rudder Management

You can download the Implementation Guide for these features on Futaba by clicking here:-

https://drsailing.org/wp-content/uploads/2026/01/sailing-radio-controlled-pdf-version-general-topic-advanced-futaba-t10j-guide.pdf

Estimated Total Number of Radio Sailors Worldwide…by AI !!

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In the last few days, we have been musing on IOM Worlds Sponsorship. We know from UK’s MYA that their number of members is 2,250 …. but for Livestream TV to a Global Audience, how many skippers are “out there”? NB decided to ask AI …… and this is what it said…..

Here are the key indicators we do have:

  • IRSA has member national authorities across many countries.
  • Four major IRSA classes (IOM, Marblehead, 10R, A‑Class) are sailed worldwide.
  • World Championships typically draw 70–90 sailors per class, with strict qualification limits.
  • Large national associations (UK, USA, Germany, France, Australia, NZ) each have 1,000–2,500+ registered sailors.

Using these indicators, we can build a reasoned estimate.

📐 A realistic global estimate

Most countries with active IRSA membership have hundreds of sailors; the largest have thousands.

A conservative model:

RegionEstimated sailorsBasis
Europe8,000–10,000Many active IRSA nations; UK alone has 2,000+
North America2,000–3,000US + Canada
Asia1,500–2,500Japan, China, Singapore, HK, etc.
Oceania1,500–2,000Australia + NZ
South America800–1,200Brazil, Argentina, Chile
Africa200–400South Africa mainly

Global estimate: 14,000–19,000 active radio sailors worldwide

This aligns with class registration patterns, national membership numbers, and IRSA event participation.

If you have nay “real data” we can think about, please send your thoughts to the the email address on our “Contact” page of this website.