Over the past week I've been attempting to work out what the IARU, the International Amateur Radio Union, actually does and how it works. I started looking into this because the IARU is this year celebrating a century since its foundation in 1925. You might think of the IARU as one organisation, but behind the scenes there are actually four, one for each so-called "Region" as well a Global organisation called the International Secretariat, headquartered at the ARRL in Connecticut.

The Regions have been negotiated by members of the ITU, the International Telecommunications Union. As early as 1927 the ITU documented differences in frequency allocations between Europe and Other Regions. In Cairo in 1938 it defined boundaries for Europe. In Atlantic City in 1947, the ITU defined three Regions, with specific boundaries, essentially, Europe and Africa, the Americas and the rest of the world.

As a surprise to nobody, this is purely a political decision, especially since radio waves don't get to have a passport and pass border control. The impact of this continues today, generations later. We still have this patchwork of frequency allocations, we still have exclusions, different band-edges and other anachronisms.

The Regions are further divided into Zones. When you start looking at the ITU zone map in detail it gets weird. For example, Iraq is in Region 1, neighbouring Iran has been specifically excluded from Region 1 and moved to Region 3. In case you're curious, Iran has been represented at the ITU since 1938.

Antarctica is part of seven of the 90 ITU zones and all three Regions, because of course it is.

Zone 90, jammed between zones 35, 45, 61, 64, 65 and 76, almost as an afterthought, contains one landmass, Minamitorishima, an island that sticks 9 m above the water, has a 6 km coastline and is generally off-limits to the general public. The nearest land in any direction is over 1,000 km away. It's got an IOTA, Islands On The Air, designation, OC-073 and despite its isolation, has been activated by radio amateurs using JD1 prefix callsigns.

I live in Australia, ITU zone 58, part of Region 3, together with the two most populous countries on the planet, India and China and the rest of eastern Asia, but not the Former Soviet republics and most, but not all of Oceania, you know, because .. logic. From a population perspective Region 3 is the largest by several orders of magnitude, but you'd never know it if you went looking.

Why am I telling you all this?

Well, that's the international stage on which the IARU is representing amateur radio. In 1927 the underlying assumption was that each service, Amateur Radio included, had a global exclusive allocation. The reality was different. Spectrum was in such short supply that individual exceptions were carved out, which as I've said resulted in splitting up the world into regions, starting in 1938 and codified in 1947.

The IARU in 1925 is a different organisation from what it is today. In 1925 individual amateurs could become members. As soon as enough members from a country joined, they'd be grouped together. When there were enough groups, the IARU became a federation of national associations.

Over time, the IARU as a single body, evolved into the structure we have today. In 1950 in Paris, the IARU Region 1 organisation was formed. In 1964 in Mexico City, IARU Region 2 was created and in 1968 in Sydney, IARU Region 3 came to exist. You can see their online presence at the various iaru.org websites.

How it works is no clearer now than it was when I started. What it has achieved is equally unclear. I'm currently trolling through ITU World Radiocommunications Conference documentation going back to 1903 to discover references to Amateur Radio, but it's hard going. At least it's something. The IARU documentation is not nearly as extensive or up to date.

It appears that many, if not all, of the people working behind the scenes at the various IARU organisations are volunteers. If you feel inclined, there is an ongoing request for assistance, and before you ask, yes, I looked into helping out, but that will have to wait until funds permit.

If you have insights into the functioning of the IARU, don't be shy, get in touch. cq@vk6flab.com is my address.

I'm Onno VK6FLAB

So, I have a confession. I don't know everything. Shocking right?

Over the past too many months, actually, come to think of it, years, I have not been on-air with my station on HF using FT8 or Olivia, modes that use tools like "WSJT-X" and "fldigi". This has not always been the case. For a time I used a tiny computer running those tools. It had plenty of issues related to its size and capacity. Overwhelmingly it was slow, unsurprising since it was released in 2009. After one particularly frustrating session where I had to recompile WSJT-X on an older 32-bit operating system using an Atom processor, I decided that this was not helping me, and I put it away.

The idea was to use my main computer that could do all the heavy lifting without cracking a sweat. To make this happen the traditional way, I'd be expected to physically connect the radio to the computer. I'm not a fan of doing that, given the potential damage that RF could do to my computer, not to mention that I have a sit-stand desk on wheels that I move around my office as the mood or the light takes me, if you're interested, I found a mobile lectern that the computer is clamped to. Works great, been using it for years.

RF aside, moving around the office is not conducive to plugging in a radio that comes with power, coax, audio, control, microphone and expects to have some space around it to actually use it. No problem, I have a RemoteRig, a device that comes in two parts. You connect one unit to the radio, the other to the head, that is, the removable faceplate of the radio, and using a network connection, you can have the head in one place and the radio in another. The two units don't have to be in the same room, let alone the same country.

I figured that I could replace the second half of the system, the head and its unit, and instead use software on my computer to get the same functionality and be up and running in minutes. That was several years ago. Interestingly, whilst I'm putting this together I did a search for "RemoteRig protocols" and learnt a few things, so perhaps this path isn't quite as dead as I feared. I've reached out to Mikael SM2O and if that comes to anything I'll let you know.

In the meantime I've been trying to figure out how to operate my radio in software only. I can control the radio if I physically connect a computer like a Raspberry Pi to it and use "rigctld" to interact with it. This gives me access to all the standard CAT, or Computer Assisted Tuning commands. In other words, I can change band, mode, frequency, trigger the transmitter, all the stuff that you need to get on-air to make noise.

There's only one bit missing, the noise, as-in audio, either coming from the radio, or going to it. I suppose I could trigger a carrier and use it to send Morse, but that doesn't give me receive capability. I've tried using network audio using "pulseaudio" - it never worked right. I've made USB hot-plug scripts that allow you to connect a USB device into a computer and access it across the network on another computer - it mostly works for sound, but reliable is not a word I'd use. I've looked at using the USB sound card in the audio mixer on my desk, but it's subject to all manner of funky restrictions and random audio dropouts. I could use a virtual screen and connect to a Raspberry Pi that's physically connected to the radio, but that's leaving all the hard work on the Pi, rather than the computer that I'm currently using with several orders of magnitude more capability.

Whilst we're discussing this, one of the reasons I like the idea of a software defined radio like a PlutoSDR, is that the stuff coming out of the radio, and going into it for that matter, is already digital. It takes away a whole lot of complexity, admittedly replacing it with software, but that's where I feel more comfortable.

Which brings me to you.

As I said, I don't know everything.

What are you doing in this space? Are you actually on-air with your contraption, or is it still in the planning stages? Are you sending audio, or digital data across the network? Does your system have the ability to swap out a radio and replace it with something completely different? Do you rely on functions available on the radio, or could it be used for a 1950's valve radio, a twenty year old one, a current model, or any number of software defined radios without issues? Finally, is it Open Source?

I confess that I'm not holding my breath for an answer, but there is a chance that you're similarly intrigued by this collection of questions that you will poke your head above the fence and make yourself known.

I'm Onno VK6FLAB