Do you know of a table comparing the capabilities of SDR protocols like rtl_tcp, soapy, openhpsdr, spyserver and no doubt a dozen I'm not yet aware of?

Thirteen years ago I opened my mouth to express my thoughts on what to do with an amateur license after hearing an operator complain they needed more power to talk to a station across 600 kilometres, whilst I used the same 10 Watts to communicate with a station nearly 15,000 kilometres away.

In all, I've shared my thoughts some 700 times, documenting my journey though this majestic hobby, describing what I've been up to, reporting my successes and failures, sharing my observations and making recommendations. I've built projects and attempted to start new processes, I've encouraged, cajoled, on occasion berated or applauded as I found it. Throughout the experience I've attempted to build this wonderful community, to inspire and to grow it. Sometimes I might even have succeeded.

I could not have done this without you. So, thank you. If I haven't mentioned your name or responded to your email, it's not because I didn't see your contribution. You have delighted me and lifted me up and I thank you for sharing your thoughts.

At this point you might wonder if I'm hanging up my microphone and to that I say: No, not even close. Instead I'm continuing with this experiment, rough and ready though it is.

It occurs to me that over the years I've started a great many projects and documented them as they happened, either here, or on my vk6flab.com website, or on GitHub. These projects take time and effort that go beyond what you encounter here. Sometimes it's hours, sometimes it's weeks. Recently a lot of my musings have been about things I've wanted to do, rather than describing things that I've done. Mind you, not for lack of desire.

I want to try something different.

I'm going to, at least for the next little while, bring you along with a project as I'm building it. No doubt I'll get distracted by squirrels along the way, but I'm going to attempt to build something for us as a community, for amateur radio, because I want to actually do something, rather than talk about it and I need to manage my limited resources and this way I get to build something and you get to have me sharing my thoughts. From my perspective, win-win.

So, let's dive in.

Amateur radio is a hobby that takes all kinds. A lot of activity is curtailed by money, or rather, lack of money. That doesn't have to be the case and I think I can show you how. That's not to say that this is going to cost nothing, but you can likely start with what you already have and work your way up as your budget allows, rather than require a significant outlay just to get your toes wet.

Over the past few weeks I've been talking about a toolkit called GNU Radio. It can be used to build systems that can process data, like say radio signals which come in all shapes and sizes. You can start by connecting an antenna to a sound card and use that as a radio tuner. You can also use a sound card as a way to listen to signals coming in via the Internet, or a radio you might already own. Sound cards exist in most computers but can be purchased for around $10. If you want to handle more data, you can spend $50 and use an RTL-SDR dongle. This incremental path continues. You can build a digital radio, or buy a learning kit, or something else, all the while still being part of the same ecosystem.

I want to build a system where you can experiment with radio without needing to buy new hardware every time you want to try something new. I want it to work with a sound card as well as with the latest $7,000 radio you can get shipped to your door. I want to do this in such a way that we can start to embrace all that is possible within the realm of software.

Ultimately I want to be able to use any signal source anywhere and GNU Radio seems ideally suited as the tool for the job. I envisage that we'll build a distributed system, where signal processing and the signal itself don't have to be in the same spot, which is useful for a whole host of reasons, even though it increases the level of complexity by at least an order of magnitude.

This isn't going to be easy. It's not going to be working tomorrow, perhaps not even a year from now and as long as new radios are invented, it will never stop, but we'll see how it goes. For example, I spent a week attempting to install GNU Radio on my Macintosh, asked two expert groups and got nowhere. In stark contrast, I installed it on my Linux Debian workstation and the example I tried worked out of the box. In other words, plenty of obstacles to overcome.

Before I go, I'll make this explicit. I want this to be open source, so anyone can play. I haven't yet decided on which specific license to use, but I'm cognisant that there are many large companies making obscene amounts of money from the volunteer efforts of the open source community and as one of the volunteers, I'd like to be able to pay for food and a roof over my head.

I expect and appreciate your feedback, so don't be shy.

I'm Onno VK6FLAB

Have you ever attempted to download an email attachment, or watch a streaming service whilst your microwave was cooking lunch or dinner and noticed that something odd was happening, or is my asking that question the first time that you joined the dots?

This phenomenon is not by accident, though it isn't on purpose. In 1947 the International Telecommunications Union, the ITU, was meeting in Atlantic City where the "delegate of the United States, referring to his request that the frequency 2450 Mc/s be allocated for I.S.M., indicated that there was in existence in the United States, and working on this frequency a diathermy machine and an electronic cooker, and that the latter might eventually be installed in transatlantic ships and airplanes. There was therefore some point in attempting to reach world agreement on this subject."

Several things to unpack there. It's 1947 and experimentation is happening at 2,450 Mega-Cycles per second, what we call megahertz today; you might recognise the frequency as 2.45 GHz.

At that time, experiments using radio frequencies for medical purposes has been in full swing for decades. Nikola Tesla wrote a paper on the subject that was presented in absentia to the American Electro Therapeutics Association in 1898.

In 1947, a diathermy machine exists; today its used to aid with blood flow, muscle and joint pain as well as inflammatory and degenerative bone disease.

There is a working electronic cooker, a microwave oven to you and I, and whilst the one you could buy in 1947, a Raytheon "Radarange", if you forked over $5,000, or $70,000 in today's money, had space for a 2 meter tall, 340 kilogram, 3 kilowatt behemoth, you have to admire the imagination that one day this would fit on an aeroplane to travel the world, let alone be available for $100 at your local supermarket.

One other thing, I.S.M. or Industrial, Scientific and Medical is a concept we still use today. The idea being that there are uses for radio waves that are nothing to do with communication, like microwave ovens, steel smelting through induction heating, surgical uses like cauterising wounds, some cancer treatments and plenty more.

One of the ideas behind ISM is that equipment operating in those frequencies must tolerate any interference generated by ISM applications. The other part of the ISM idea is that it's unlicensed, which is very attractive to people who experiment and why it became popular for other uses beyond heating your lunch.

Consider that baby monitors, garage door openers, car security systems, video senders, cordless phones, wireless speakers and microphones, cordless keyboards and mice, radio controlled models, and smart power meters all share the same radio frequencies.

Then there's Wi-Fi, Bluetooth, and Zigbee, also using the same 2.4 GHz ISM band.

Yeah, even the two most popular network technologies on your phone and computer, Wi-Fi and Bluetooth are competing with each other and the microwave oven in the kitchen.

There are six global ISM bands and six additional ones with specific local requirements. Things like industrial microwave ovens, Near Field Communications or NFC and LoRaWan use frequencies like that. You'll also find satellite communications, radio location, CB radio, radio astronomers and radio amateurs on those bands.

So, why are these technologies sharing the same frequencies?

Essentially because they're unlicensed spectrum. Just so we're clear, this doesn't mean that it's unregulated spectrum. All it means is that unlike licensed spectrum, you don't need to buy access to the spectrum to use it, but you do need to have compliant equipment when you do. Compliance depends on local laws, location, band and power levels.

So, next time you need to watch a movie whilst cooking lunch, eat an apple or go outside and get some daylight onto your skin instead.

A quick word on power. Whilst all these uses share the same frequency band, their human impact varies considerably. A Wi-Fi network uses a tenth of a Watt. A diathermy machine uses 250 Watts and produces a "gentle heat" at the surface of the skin, suitable for treatment. Contained inside a metal box, a microwave oven uses 1,000 Watts or more. Even that doesn't cook food from the inside out, instead it vibrates water molecules in the food, which heat up, which in turn cooks the food. It doesn't penetrate very far and doesn't work on frozen water, which is why you need to defrost your food before you can cook it. It's also why when you stand between your Wi-Fi router and the computer things slow down, or why your hand position on your phone or tablet can make a difference, since your body, made from 60% water, is blocking the signal.

Finally, here's something to consider. A licensed radio amateur has access to some ISM bands, but does it require an amateur license to actually use any of those bands? In other words, if my amateur license doesn't permit my access to 2.4 or 5.8 GHz bands, can I legally use a transmitter in the unlicensed spectrum that is the ISM band on those frequencies?

If you answered yes, and you're considering experimenting on the ISM bands, you'll find the Low Frequency Experimental Radio or LowFER, MedFER and HiFER community has already beaten you to it. Within the ISM regulations are provisions for all kinds of other experiments, generally using low power, sometimes a Watt, sometimes less, but you already know that my 10 mW beacon on the 10m band has been heard 13,945 km away, so there's plenty of opportunities to play.

I'm Onno VK6FLAB

This is a sobering post that revisits the notion that given a project, how many developers have to be hit by a bus before it stalls.

According to the methodology explained in the article, in 2015 it took 57 developers for the Linux kernel to fail, now it appears that it takes 8.

That's not good.

The hobby of amateur radio is one of experimentation and change. For decades this came in the form of circuit diagrams, components and scrounged hardware from anything that wasn't bolted down. New functionality came with the aid of a soldering iron.

More recently, functionality comes from participation in the global electronics market where you can buy any radio you like and have it shipped to your door within hours at an unbeatable price.

Mind you, buying all those unbelievably cheap radios does start adding up and if you want to use more sophisticated hardware, that too is possible, at a price, somewhere between $50 and a new Porsche. Whilst that's an option for some, for the rest of us, there are better and cheaper ways.

Of course it doesn't stop there. If you connect any radio to a computer, you can use whatever software you like to encode and decode any signal you can imagine. With a traditional radio connected to a computer you can make it participate in hundreds of different so-called digital modes.

Before I continue, let's look at radio in a slightly different way.

Consider an antenna as a continuous source of voltages that are amplified, filtered and demodulated in some way by a radio. You can think of the combination of antenna, radio and computer as a stream decoder. To decode a signal in a new way requires a new decoder, which you could build from components or as I've said, buy online.

During the week I've continued experimenting with GNU Radio. If you're unfamiliar, it's a toolkit that allows you to build so-called flow graphs that can process a signal stream. Think of it as a box of Lego that you can put together to build any type of decoder.

Let me say that again.

Imagine that you want to decode or transmit a mode like FreeDV, M17, APRS, Olivia, Contestia, or Hellschreiber. With the GNU Radio toolkit, all of this is possible and you won't need to buy new hardware or bust out the soldering iron every time you want to experiment with a new mode.

If you have been playing with digital modes already, you'll likely point out that you can already do this today by using software running on a computer, and that's true.

What that doesn't tell you is that this comes with a very specific limitation, namely that all those modes require that they fit inside a single audio channel because all those digital modes you might be familiar with are essentially using an SSB or FM signal with the audio generated or decoded by a computer.

Even if you have a modern radio like for example an ICOM IC-7300, you'll still be limited in what modes of transmission you can make. ICOM limits the transmit bandwidth to 2.9 kHz. Flex Radio appears to double that to 7.9 kHz, but numbers are sketchy. The point remains, most current amateur radio technology is based around the notion that a mode essentially fits within a single audio channel and a very narrow one at that.

So, why does this matter?

If you run out of FT8 space on a band, right now you need to change to an alternate frequency to play, but you'll only be able to see the stations that are using the same alternate frequency, as long as they fit within the bandwidth of an audio signal. If you wanted to check out the main frequency, you'd have to change frequencies and keep switching back and forth. Using this idea, monitoring all of FT4, FT8, WSPR and all CW beacons, all at the same time becomes unimaginable, not to mention costly if you needed a radio for each band and each mode.

What if you wanted to use another mode that took more than about 4 kHz, like say a 5 MHz wide DVB-T signal which you could be experimenting with on 70cm?

Or, what if you'd like to compare a repeater input with its output at the same time? Or compare two repeaters together? Or find the best band to operate on right now?

The point being, that there are things that simply don't fit within a single audio channel that you won't be able to play with using a traditional radio.

As it happens, that too is a solved problem.

Remember that I mentioned that you can think of an antenna, radio, and computer combination as a stream decoder?

What if I told you that an SDR, a Software Defined Radio, is essentially a device that translates antenna voltages into numbers which you can process with GNU Radio?

Whilst that does imply replacing your radio, you don't have to jump in at the deep end to start playing and even if you do decide to buy new hardware, you can get your toes wet with all manner of self build or commercial kits. Even better, you can start with the gear you already have today and become familiar with GNU Radio and when you're ready to expand your station, you can add in an SDR and continue to use the same tools to experiment.

Not only that, you can do interesting things by combining what you already have. Consider for example the idea of using an RTL-SDR as the receiver with a traditional radio as the transmitter. You could decode all of the FT8 signals on a band and transmit where there was space to do so.

The point being that you can do this one step at a time. Every time you download or build another GNU Radio flow graph, you can have a new decoder and as time goes on, you'll be able to decide what hardware you might want to pair it with.

To be clear, I'm talking about the gradual change from component based radio using audio interfaces into software based radio. It's not like we haven't done this before. Anyone recall spark gaps, or valves?

The future of experimentation is bright and it's filled with bits.

I'm Onno VK6FLAB

Over the past weeks, actually, probably more accurately years, I've been carrying around an idea. It's been bubbling away and I've been trying very hard to make it solidify into something that I could explain and then hopefully attack.

Today I woke up with a hunger to do some radio and ultimately tell you about it. To get to a point where my Aha! moment emerged, I need to provide some history.

Traditional radio activities involve variations on a radio plugged into an antenna with the operator talking into a microphone or torturing a Morse key. If you want to operate digital modes, you essentially have two choices. You can use a rare radio with in-built digital modes or, more commonly, connect a computer to the radio via an audio interface, which essentially replaces the operator with a computer.

This implies that the radio is physically connected to the computer and in the same room.

What if you don't want either?

There's another aspect to this.

Modern SDRs or software defined radios, tend to use the network to get information from the antenna to the user. The network can transport the radio signal, but also control signals, to change things like frequency and mode, and if the radio supports it, bands, antennas and other fun stuff like filters.

There are ways to control a traditional radio across the network with so-called CAT commands, or Computer Assisted Tuning. This same technology can be used to connect a logging tool, so it knows what frequency and mode to log when you make a contact.

What CAT control lacks is audio. Said differently, although some solutions exist to send Morse code, you cannot use CAT to listen to the radio, or speak into a microphone. This isn't an issue if the radio and you are in the same room, but if they're not, then things get tricky.

And as a final piece of background information, a traditional radio is based around audio, that is, the information going between you and the radio, or a computer and the radio, is limited to audio. This represents about 4 kHz of signal. In other words, if you're tuned to 28.500 MHz, then a traditional radio can "hear" the radio signal between 28.500 and 28.504 MHz, sufficient for a single audio signal, but even a simple digital radio, a $50 RTL-SDR using a USB cable, can handle 2.4 MHz, plenty to cover all of the 10m band between 28.0 and 29.7 MHz with room to spare.

I've been looking for something, anything, that brings these two vastly different worlds together for a number of reasons. I've spoken previously about some of these. For example, I do not want to physically connect my traditional radio, a Yaesu FT-857d, to my computer because I do not want to have the potential of stray RF coming into my computer.

I'd also love to be able to run the same decoding and control tools for various radios, the Pluto SDR, several RTL-SDR dongles, my 857 and other radios as they come into my shack from time-to-time.

Then there's the signal processing side of things. I'd love to be able to learn how to decode Morse and eventually other modes using a computer. I also want to be able to use a voice-keyer during a contest so the whole house doesn't ring from the sound of me calling CQ Contest, or CQ DX for hours on end.

I've been making inroads into this. I managed to get rigctld to work across the network using Docker containers at both ends. I attempted to get audio working, but that has so far been a dismal failure, despite assistance on several fronts.

This morning I stumbled on the idea of using "GNU Radio" for both. I even came across some examples where two so-called "flow-graphs" can talk to each other across the network. Now at this point you're either going to be nodding your head, or you're going to be asking yourself what gibberish I just spouted.

If you're already nodding your head, stand-by, if not, GNU Radio is a software toolkit that provides signal processing blocks that you can link together to create simple or sophisticated systems to manipulate signals, like those that come from radios, or radio telescopes, or mobile phone base stations, radar, ADS-B, or whatever else you can imagine. It's widely used in academia, government, industry, research, and of course by us, hobbyists.

A collection of blocks and links is called a flow-graph and in essence it's a program or if you like, an App, that you can run. It comes with a tonne of examples and tutorials, including one where one flow-graph can manipulate another, either on the same computer, or somewhere on the Internet.

What this means is that you could build a flow-graph that can talk to a Yaesu FT-857d and one that can talk to a Pluto SDR, or an RTL-SDR, or any other radio, and use that to talk to a flow-graph that understands how to deal with audio, CAT and anything else you might want to.

It means that for the first time in years I can at least imagine a unified world where my 857 isn't a boat anchor when compared to my Pluto SDR. Of course they don't have the same functionality, but at least I can handle their signals in the same way.

Unlike the path I was previously on, where I was attempting to cobble together several tools whilst attempting to avoid a headache from banging my head against the wall, today I can use one toolkit to build Apps that run on pretty much anything with a CPU and see the fruits of my labour.

I'm working on a proof of concept and when I've got it to show-and-tell, I'll put it up on my GitHub page, cunningly named after me, VK6FLAB.

A final observation. Amateur radio means different things to different people at different times. For me, today, it's about software and GNU Radio. Tomorrow it is just as likely to be about something else. What is possible depends entirely on your imagination, so get playing, either on-air, or on-line, whatever gets you smiling and remember, the impossible happens immediately, miracles take a little longer.

I'm Onno VK6FLAB

One of the oldest global aspects of our hobby, other than actually using the radio, is the QSL bureau. It uses a postcard-like system to confirm that two stations made contact, sent via the postal service as a so-called QSL card. Of course, that only works if you have each other's address which after World War II was somewhat difficult. As a result the QSL bureau was born.

Intended as a single point of contact for a country, a local QSL bureau consists of one or more volunteers, paid staff or contractors, who act as the distribution point for incoming and outgoing QSL cards. If you and I agreed to confirm our contact via the bureau, my QSL card to you would be sent to the VK outgoing QSL bureau, which would hold my card until there were sufficient outgoing cards from all over Australia to your country to package them all up and send them to the incoming QSL bureau in your country.

Your QSL bureau would then wait until there were enough QSL cards for your region to send it on, where it would eventually get into your hands in a variety of ways, via the postal service, through your local club, or at a local hamfest where the QSL bureau might have a stall. Your QSL card to me would make a similar, reverse, journey.

This process could take weeks or sometimes years.

Although not fast, this worked for many decades, but once electronic communications and computers started appearing, combined with increased costs associated with privatised international postal services, the wheels started coming off.

Getting access to historic documents has proven challenging. I can tell you that over the years the IARU, the International Amateur Radio Union, has coordinated and controlled how the QSL bureaus should work. For example, a resolution adopted in 1985 and updated in 2009 "strongly encouraged" its member societies to accept incoming QSL cards for all amateurs in their country, regardless of affiliation. It also instructed QSL bureaus to only send cards to the official QSL bureau if there was more than one.

Several years ago, the IARU administrative council recognised several trends, among them the environmental impact of unwanted cards generated in bulk by computer logging software, lower levels of adoption and ultimately the closing of some smaller QSL bureaus after being overwhelmed by undeliverable cards from increasingly popular holiday DXpeditions.

In September 2018, the IARU adopted resolution 18-1 that stated that it "resolves that member societies are encouraged to continue to offer QSL bureau service in their countries, exchanging cards with the bureaus of other member-societies, for as long as doing so is economically justifiable, and further resolves that amateurs are encouraged to adopt confirmation practices, including but not limited to using electronic confirmation systems, that reduce the volume of unwanted and undeliverable QSL cards being introduced into the bureau system."

This resolution took effect on New Year's Day, 2019. I'll also note that the IARU has its own year 2000 issue, having been in existence for nearly a century, its resolutions are named after the last two digits of the year followed by a sequential number, so resolution 25-1 could refer to 1925 or 2025, but I digress.

The internet has introduced several confirmation processes. The most vocal of these is "Logbook of The World", or LoTW. I'm not a fan and haven't been for some time. I'll get into why in a moment. Other contenders are eQSL.cc, qsl.net, qrz.com, clublog.org and others that have yet to steal the limelight. If I've forgotten the one you run, let me know.

Saying that I'm not a fan of LoTW is understating it. Recent ARRL ransomware payments aside, why do I need to legally prove beyond a reasonable doubt that I made contact with some random amateur? Why does this need to be authenticated, signed with a time-limited certificate and verified with 100 points of identity and why do we continue to roll out new and interesting procedures for what is essentially a postcard saying that on this day, time and frequency we made contact using this mode for the purposes of .. wait for it .. our hobby?

The eQSL website has an interesting statement: "One of the problems with an e-mail based system is that there is no security inherent in that mechanism. Anyone can purport to be P5ABC, and you'll have a difficult time verifying it."

So what .. and what made you think that the postcard ending up in your letterbox was guaranteed to be from P5ABC?

If you're going to the effort of pretending to be P5ABC, what harm does that do in the scheme of things? For that matter, how do you know that the station you talked to on-air was actually P5ABC? I ask because I've spoken to an amateur who recently did some HF direction finding during several popular DXpedition pile-ups. They discovered that there were several stations purporting to be the DXpedition that were not.

So. Right now we're in a situation where many if not all amateurs are connected to the internet. Most will have an email address. You already know mine, cq@vk6flab.com. If we made contact on-air, send me an email. If what you wrote matches my logs, I'll send you a reply to confirm it.

How do you get the address? One possible approach is to create an online email database where you could submit the email address associated with your callsign and you could look-up a station to contact them.

Another is for member societies to offer email addresses, the ARRL and the WIA already offer this service to current members.

I'll also point out that one of the reasons that the QSL bureau was instigated in the first place was because some addresses for amateurs were not available. If you make contact today and you want to send them an email confirmation the question to ask is simple: "Hey, what's your email address?"

Will that cover everyone?

Nope. Neither does the current system. What it achieves is that my personal private identifying information isn't stored at the ARRL if I'm not a member. Besides, in my opinion a list of email addresses combined with callsigns is hardly something worth getting excited about, unless of course it's used by manufacturers to send out product announcements and discount codes. We should be so lucky.

If you have a better idea, you know how to get in touch. What I can say is that this is the ultimate decentralised QSL system, not unlike the contact you made on HF.

I'm Onno VK6FLAB

One of the unexpected benefits of this hobby is how it provides you with the ability to connect to others in ways that are not directly related to radio.

Take for example Steve. Steve appears at unpredictable times and locations, been hunted by citizens and scientists and unlike Steve's potential invisible cousin, the proton arc, has been photographed by aurora hunters many times. It looks like observations go back as far as 1705.

In 2017, physics professor Eric Donovan saw some of these photos and got curious. Assisted with GPS coordinates from an aurora hunter in Alberta, Song Despins, Eric correlated the time and location and it turns out that Steve was observed as a ribbon of gas 25 kilometres wide, 300 kilometres above Earth with a temperature of 3,000 degrees Celsius by the European Space Agency's Swarm, a constellation of magnetic field measuring satellites in orbit since 2013 and planned as a four year mission, so-far it has almost managed eleven years.

Steve? Yeah, it's not named after Steven Hawking or Steve Martin, rather, if you're seeing something unexplained, you might name it something less scary, like the hedge in the movie "Over the Hedge". Steve was given a backronym, finding words after the fact, Strong Thermal Emission Velocity Enhancement, but I prefer Steve. The NASA team at Goddard Space Flight Center have adopted Steve, so it looks like a keeper.

I would never have even stopped to read the recent article in the local news, let alone dig into the various publications, if it weren't for the notion that Steve is one of many phenomena affecting the ionosphere and with it our hobby.

Here's another example.

Vance KV4P published a plan on kv4p.com, outlining a $35 project that requires minimal soldering that makes any Android phone into a handheld radio for 2m. Using a radio module, a micro-controller, a short USB cable, antenna connector, antenna and some sticky gel pads, Vance has come up with an open source project and circuit-board design that will get you on your way. He's even designed a 3D printable enclosure so you don't have to scare your friends with a bare circuit board.

Whilst the Android app is in beta, that is, not quite fit for human consumption, you'll need to drop an email to Vance to get in on the action. Source code is on GitHub.

I came across this project after breakfast, reading the "Y Combinator - Hacker News" which features all manner of weird and wonderful projects, links and questions from all over the technology sphere. The post has expansive discussion on Vance's project, including thoughts on other ideas on how to do interesting things related to our hobby.

Again, if it weren't for the fact that I'm already an amateur, I would never have taken more than a glance at this and I would never consider that this was a doable project, let alone discover other amateur radio projects like HamWAN and AREDN, or the Amateur Radio Emergency Data Network.

The point being that we as amateurs are often pigeonholed by society into the idea of obsolete, disconnected and quaint. I'm here to tell you that our hobby has made me more alive than ever, more connected to others around me, more observant to electrical and physical phenomena and if that makes me quaint, I'm Okay with that.

Also, while we're on the topic of being Okay. Charles NK8O reached out and told me that after listening to me talk about FT8 and his Morse code achievements, he cracked up and then raised the stakes by pointing out that you can get on HF with CW, that's continuous wave, or more commonly, Morse Code, for about $100, where a kit capable of SSB, Single Side Band, or more generally audio, will likely set you back significantly more. His advice, which I cannot fault, "Get on the air!", presumably to make some noise.

I'm Onno VK6FLAB

Anyone here have any experience with a Datto Backup Appliance?

I have just been told that they've never run a full restoration in the six years that it's been in service, deployed for the backup of four mission critical virtual Windows Servers, four Windows Workstation and a (physical?) Linux PABX server.

The actual appliance is apparently a "Datto S3-2000 BCDR"

Edit: The anal retentive in me is going WTF in a tight loop. The industry professional with 40 years experience in the field is going, different day, same old...

I realised that I didn't actually ask the pertinent question, the hamster wheel was running full tilt, but is this normal, or is this WTF, or somewhere in-between?

And discussion covering all manner of related fun:

• https://news.ycombinator.com/item?id=41818609

Every now and then you come across an idea that throws you for a loop. It comes seemingly out of nowhere and once you've seen it, you cannot unsee it. It's a lot like a 1929 painting I like called "The Treachery of Images", also known as "Ceci n'est pas une pipe", or in English, "This is Not a Pipe" by Belgian surrealist painter René Magritte. If you're not familiar with it, it's a painting of a pipe, and by being a painting, it's not a pipe. Obviously.

Before I go into the idea that rocked my world, I need to set the stage a little.

There are several modes I've discussed before, WSPR, or Weak Signal Propagation Reporter, FT8 or Franke-Taylor design, 8-FSK modulation and plenty others.

Each of these modes has one thing in common. They require that all participants are using the same time. That is, both sender and receiver need to agree on when "now" is for this to work.

A WSPR signal takes 110.6 seconds, every 120 seconds, starting on the even minute. It requires that the transmitter and receiver agree on the time within about 2 seconds.

An FT8 signal takes 12.6 seconds within a 15 second window. It requires an accuracy of about 20 milliseconds.

These timekeeping requirements are pretty easy to achieve in a modern network connected computer. You turn on a thing called NTP, or Network Time Protocol, point it at an appropriate clock and off you go.

If you're not connected to the Internet, then things get squirrelly pretty quickly. You could buy yourself a GPS, set up a link between the GPS and your computer, run some software and use the GPS clock to synchronise time on your computer.

Of course, this requires a GPS, a serial cable, software, configuration, battery power to keep the GPS running and probably a couple of other things. I've never done this, but given what I'm about to share, I don't think I ever will.

What if you used a WSPR, or an FT8 signal, from someone else to synchronise your clock? If you've ever launched WSJT-X, you'll have seen a column marked DT, that's Delta Time, or the difference in time between the clock on your computer and that of the transmitter.

If you could read the difference and use it to adjust your clock, you'd be in business.

Charles NK8O pointed me to a GitHub Gist with a single little Python script, written by Peter K6PLI. It updates the clock on your computer using the Delta Time from WSJT-X.

I'd point you at the script from here, but 3a730575, and 24 more characters, and that's just one element of the URL, doesn't run quite off the tongue, so I've cloned it into my VK6FLAB GitHub repository where it's called wsjt-time-sync. I added Peter's description to the ReadMe file, but I can take no credit for the effort, or the idea, that's all Peter.

So, synchronise your clock using the signal that you're trying to decode. Seems pretty obvious now, but that was a brand new notion for me.

Of course now I'm excited and wondering where else I might use this.

Let me know if there's more to this that tickles your fancy.

Also, just because I know Charles will poke my eye out with a Morse key if I don't mention this, you could use this script on your next POTA, Parks On The Air, or WWFF, World Wide Flora and Fauna activation, or anywhere else you go portable to make some noise.

I know, right, Charles, using FT8 instead of Morse Code, what's next, the end of the hobby? I'll tell you a secret. From time to time, he even uses his voice!

I'm Onno VK6FLAB

The other day I was packing the car to go on a little trip an hour out of the city to see the Milky Way. I briefly entertained the idea of bringing my radio gear with me to get on air to make some noise.

I resisted the urge, mainly because thinking about this didn't fill me with joy, rather it made me groan.

Now to be absolutely clear, I adore going out into the scrub with my radio gear. I love getting on air and making noise. I like doing this with friends.

If the time spent is about amateur radio, in other words, if I'm doing this with other amateurs, preparation and set up are part of the experience.

However, if I'm on my own, or with my non-amateur SO, significant other, then preparation and set up often take more time than the actual on-air activity and by the time that things are humming along, we're ready to do something else, fine food, nice view, coffee, you name it, anything other than radio.

So, how can I make the preparation and set up to be something much less time consuming? I don't really want to take over our car and bolt the radio back into it, nor do I want to strap a multi-tap antenna to the roof. At the other end, I also have no desire to bring a wire, look for a tree, do some throwing, find a place to sit and do the rest of the preparation to get on air.

In other words, I want my cake and eat it too.

What might that look like?

One of my fellow amateurs has a telescopic whip, looks like a transistor radio antenna on steroids, but using that requires that you bring something to tune it, given that the ground is going to influence the antenna in unexpected ways.

I could go out and buy a QRP radio with an in-built tuner, make the whip as long as it goes, perhaps even make it into a vertical dipole by combining two and start playing, but I'm not there yet.

Of course I'm not the first to try any of this. The Parks On The Air and Summits On The Air activators are all over this type of activity, hopefully they've written some of their learnings down. I confess that I haven't found anything yet.

How much of this have you achieved? What compromises did you make, what modes do you use when you're operating like this, mind you, I can hear my friend Charles NK8O from here, "Use Morse Onno", so I can take that as a given.

All I need to do is learn it.

I'm Onno VK6FLAB

Article published on September 29, 2024 By Dan KB6NU

Over the past few months I've been investigating the history of the IARU, the International Amateur Radio Union, to help it celebrate a century of amateur radio achievements.

If you're a radio amateur and you pay anyone a membership fee, I have questions for you.

Let me set the stage with a quote from the IARU:

"All licensed radio amateurs benefit from the work of the IARU, whether or not they are members of their national IARU member-society. But every licensed radio amateur should be a member. Only by combining our efforts in this way can we ensure the future health of amateur radio, for ourselves and for future generations."

That's straight from the IARU website. It seems like a lofty and worthy aspiration.

Before I proceed, let me assure you that I'm absolutely committed to improving this hobby and this community, committed to strengthening its representation, its reach and increasing its activity levels.

The IARU has existed for nearly a century. It consists of a global organisation and three regional ones, each working towards improving on, and advocating for, the amateur community. Governed by different constitutions each organisation pursues similar but not identical roles within its sphere of influence.

Most, if not all IARU organisations are run by volunteers, people like you and I, who stick their hand up and help out, writing documents, attending meetings, updating websites, managing membership information and all the other things that the IARU apparently does.

I say apparently because getting anything other than motherhood statements from any of the IARU organisations is like pulling teeth. To construct a historic list of elected office bearers, President, Vice-President, Secretary, Treasurer and various regional Directors is an exercise in archaeology and much of the information doesn't appear to exist.

That also seems to be true for what the IARU is spending its money on, your money.

The IARU is funded by the fees that we pay to the representative body in our country, either directly, or as a member of a club who contributes. In my case, if I was paying a membership fee to the Wireless Institute of Australia, like I did for a decade, some of that would pass to IARU Region 3 and then from there, some would pass to the global IARU secretariat.

Multiplied by every country and every paying member in that country across a century, there are significant, and to the best of my knowledge, unaccounted for sums of money involved.

Then there is the list of things that the IARU has achieved. I don't doubt for a moment that people have been working very hard, giving it their all, helping, working late, doing things above and beyond to make outcomes appear, as-if by magic, without any of the blood sweat and tears associated with the process. I suppose it's like sausage, nobody wants to see how it's made, and I understand the sentiment.

What of the outcomes, the published results? Should they be secret too?

At the moment the IARU claims that it represents amateur radio on the global stage and on its website lists its achievements, namely: 21 MHz, Amateur Satellite, WARC bands, more Amateur Satellite bands, more 7 MHz frequencies, easing of restrictions in relation to disaster communications, 136 kHz, 472 kHz, 5 MHz, 50 MHz in Region 1, international roaming, and emergency communications.

Impressive list right? There's twelve achievements listed in all, across 100 years, with meetings in cities all over the globe, with hundreds of people participating. Mind you, it appears that only recently has some level of coordination emerged between where meetings are held, by and large, each organisation meets every few years, staggered so there's always a meeting in a different country every year. Those frequent flyer miles must be adding up. If only there was another way to communicate across the globe.

So, let's look at this in terms of effort and reward. Let's say that across the globe that at any one point in time there are 100 people part of the IARU infrastructure across the four organisations, or 25 in each. It's a modest representation. Let's say that they each volunteered 1 hour per week, so 52 hours a year, 5,200 hours across the entire IARU per year, or 520,000 hours across a century. This means that each achievement took more than 43,000 hours of volunteer effort. Unless of course there was more achieved that is undocumented. Mind you, 52 hours a year per volunteer is also probably light on, potentially by orders of magnitude.

I note that for example there's no mention of things like quashing the 2m proposal by France where the local aviation authorities were looking to acquire some extra spectrum, or negotiations in relation to 1.2 GHz at the ITU World Radiocommunication Conference 2023 or WRC-23 in Dubai, United Arab Emirates, held between 20 November and 15 December 2023.

My point is this:

What is the IARU doing? Is it really effective, or is it burning volunteer hours like it's going out of fashion? What is it spending your money on? Where is the record of all this activity? What level of accountability is there? Is your peak body looking at the IARU books? Are they holding the IARU accountable, or are they part of the problem?

There is plenty of evidence that there are other issues too. As I said, I attempted to write down who was elected president in what year in which IARU organisation. Aside from missing decades of information, there are amateurs in that line up who served as president for 26 years. Imagine that, a representative body that elects the same person for nine straight terms. I'm not naming them, the information I have is incomplete; right now I cannot tell you who was previously elected across IARU Region 3, or list anyone between Hiram Percy Maxim elected in 1925 as the first IARU president and 2009 when Tim Ellam, VE6SH and G4HUA, was elected president to the global body, but it's unclear if he was the only president between 2009 and 2024 when he was re-elected.

So, what do we do about this?

First of all, am I just tilting at windmills or is this an actual issue that needs fixing and if so, what might that look like?

Engagement would be my first guess. Is your club sending money to your peak body? Has it asked what the funds are used for? If you're a member of your peak body, have you asked them where the money goes and how much of it goes to the IARU and what it's spent on?

Contacting your peak body and asking questions might be the first place to start, but if your peak body is dysfunctional as plenty of them appear to be, perhaps it's time to contact the president of your own IARU region and ask them what gives, that is if you can find out who they are.

As I said, I think that our hobby is important, I think it needs advocacy, I think that takes money and effort, but right now I have very limited evidence that what we're doing and how we're doing it is the most effective way to go about it.

What will you do about this?

I'm Onno VK6FLAB

As I sit here, away from my shack, I'm overlooking a picturesque valley that I'm visiting for a couple of days to see the stars. I learnt recently that my SO, Significant Other, had never seen the Milky Way with their Mark One Eyeball and we thought that it would be fun to remedy that.

One of the challenges in accomplishing this is that we're surrounded by light almost everywhere we go. Street lights, porch lights, car lights, stadium and building lights, traffic lights, even emergency lighting on various towers dotting the landscape.

Last night we laid on our backs on a picnic blanket tucked into a sleeping bag, looking up at the sky. The valley where we are is pretty good, there's much less light pollution than in the city, but it's not pitch black. We fantasised about knocking on neighbours' doors to ask them to turn off their porch lights, but quickly came to the realisation that this was not going to be either acceptable, or reasonable.

While I entertained the notion of creating a community Milky Way watching event, increasing local awareness of the new moon, light pollution and making it a local monthly event I discovered that Astro Tourism is a thing and our location happens to be part of the local scene.

Of course I couldn't help myself and started explaining to my SO about how light and radio are the same thing when it struck me that in our hobby we have a similar issue.

We don't refer to it as light pollution, instead we call it noise, specifically, QRM, or man-made noise, as opposed to QRN, natural noise.

I wondered what a community event might look like if we did this with radio amateurs, rather than star gazers. How far would we need to go to get away from noise and could we realistically make something that was actually noise free?

In reality the radio gear we bring, the power supplies, the solar panels, generators, inverters, computers and pretty much all the other stuff to make life come with radio noise to more or lesser degree.

How could you set up an event where that type of noise was contained? Could it be done? What would it take?

On a small scale, I can go to my local park with a fully charged 12 volt battery and a radio and get some sense of what it might look like, but all that really does is whet your appetite. What does this sound like if it's really quiet?

For star gazers, there is a project called DarkSky with a .org website. It documents where designated Dark Sky Places are and promotes the protection of communities from the effects of light pollution through outreach, advocacy and conservation.

We as radio amateurs could do with such a thing. What would our radio quiet spaces look like? How would we find them, how would we coordinate our efforts and what would outreach, advocacy and conservation look like for a radio quiet space?

From a star gazing perspective, I've experienced the middle of nowhere, Lake King in Western Australia, in a paddock, lying in my swag, looking up. The sight is overwhelming. I felt like I was falling, even though I was lying flat on my back, physically not moving.

I wonder what such a level of quiet looks like with a radio?

I'm Onno VK6FLAB

The other day I was handed a sheaf of paper. The person handing it to me, an amateur, was insistent that I take custody of this little collection. I asked what it was that they intended for me to do with it and the response was that because I did things with history, I should do this too.

Aside from taking on a new project, trying to juggle life and income, their observation was pretty spot on, even though I had never quite seen it in that way. Over the years I've often explained things in the context of the era in which it came into being, the first transatlantic telegraph cable in 1858, the first 20m contact between the UK and Australia, back in 1925, the founding of the IARU, also in 1925.

For some years I've been playing with the idea of documenting the journey from Spark Gap to SDR. I started writing down milestones, collecting information about the various protagonists along the way, attempting to capture their life milestones and their radio related accomplishments. One friend went so far as to take photos of the replica spark gap transmitter in Hobart, Tasmania as used by Douglas Mawson between 1911 and 1914 during their Antarctic expedition.

Between being entrusted with the written history of 28 Chapter of the Ten-Ten International Net and today I've started a spreadsheet. If you know me at all, you know that I love a good spreadsheet. This one is pretty simple, date, event, event type, protagonist, note and source. So far I've got about 85 rows. I'm using it to capture milestones directly related to our hobby, when the first EchoLink node went live, when RTTY came to be used on-air, the invention of FM, when we got access to the 2m band, when 160m was taken away during World War II, ultimately, all of it.

There is already a website that documents some of this but it's USA centric, even though our community is global, and it does not include any sources, so there's no way to verify any of the events, which I think is essential if you're going to capture this in any meaningful way.

I want this list I'm creating to include all manner of amateur related things, the first time F-troop went on-air, the first CQWW, perhaps even every CQWW. I have also set-up a form so you can contribute your events and over time grow it into something that captures what it is that we've done over the years. Perhaps it will grow into a section on Wikipedia, perhaps it will become its own thing, it's too early to tell.

As I've said many times, if you didn't write it down, it didn't happen. So, this is me, or us, writing it down. Perhaps we'll be able to find a way to make it through the next 100 years.

You can find the Amateur History Project under Projects on my home-page at vk6flab.com - I look forward to reading your contributions.

So, thank you Christine, VK6ZLZ for pushing that sheaf of paper into my hands. I hope I'm worthy of the history that it represents.

I'm Onno VK6FLAB

To get into the hobby of amateur radio is easy, but that doesn't mean it's simple. I was introduced to the hobby three times.

The first time I was a Sea Scout in the Netherlands. It was JOTA, the annual Jamboree On The Air and radio amateurs across the planet were set up at various Scouting locations with their stations showing off how to make contact with far away places.

My memory of it is brief. I recall a green heavy army tent with radios on a table. There was noise everywhere. I was told that I was hearing a station in Brazil, which seemed incongruous, given that I was standing on an island surrounded by other Sea Scouts, a place where I had been camping and sailing for several years.

We trooped out of the tent and ten minutes later I broke a finger playing a game where you sat on a mast trying to upend the other person using a canvas bag with a jib in it. I was unceremoniously upended and landed poorly and broke the middle finger on my right hand. Being a teenager that was of course a source of immediate ridicule and innuendo and getting a dink, that's Aussie slang for getting a ride on the back of the pushbike of my boatswain to the local hospital, after rowing from the island to the mainland caused me to completely forget that amateur radio experience.

The second time I came across the hobby was through my then manager, Ian, whom I now know as VK6KIH, but at the time he was a quiet spoken man thrust into the role of manager. The introduction came in the form of a Daihatsu Charade with a massive, what I suspect, was a 40m HF whip. The amateur radio aspect made little or no impression. The antenna, clearly much too large for such a tiny vehicle, did. I don't recall ever talking about amateur radio or even seeing his setup. Come to think of it, I'm not sure if I ever have.

The third time I came across the hobby was at a dinner table surrounded by fellow "dogcow" geeks. One of them, Meg, then with the callsign VK6LUX showed us her brand new shiny purchase, a drone, that could be controlled remotely via WiFi on 2.4 GHz. She went on to tell us that the range was pretty limited because it was WiFi, but because she was a radio amateur, she was going to experiment with an amplifier. This was permitted because as I learnt, the 2.4 GHz WiFi frequencies are shared with amateur radio. You might know it as the 13cm band.

I asked about this thing called amateur radio. I wanted to know what was involved, how would you become one, what would it cost, you know, all the things everyone always asks. I was told that there'd be a course in two weeks with an exam the weekend after. I asked if we needed a group booking and was told to "just rock up".

So I did.

I got my license in 2010 and my world changed forever. I will add, just to make sure that if you're planning to do this, that during my course I discovered that my license wouldn't permit my use of the 13cm band, so I'd have to upgrade. I promptly purchased the requisite course material and started reading. In the mean time I got distracted by the activities at a local club, then I bought a radio, then I was told I wasn't a real amateur because I only had a beginners' license, so to prove a point, I started having fun with my license. I haven't stopped since.

Now, some, or maybe all of this, I've shared before. Here's something new.

I'm a so-called A.F.O.L, or an Adult Fan Of Lego. It's not a guilty pleasure, I'm happy to admit it. I have too much Lego around me. My oldest set is from 1964, House with Garage, number 324-2. It's not complete any longer, the car is long gone, the garage door weights are broken off, but it has pride of place in my living room. History does not reveal how I came into possession of it. Best I can reconstruct is that in the deep dark corners of Australia it takes a little while for kits to arrive, since I was born after the kit came into existence. I do know that I had it before 1976.

The other day I was watching a documentary about Lego and one thing stood out to me. I'll share the entire quote by Kjeld Kirk Kristiansen the then President and CEO of The Lego Group:

"During the 1990s, we kept thinking that much more should be done for the adult "hobbyist builders," as we called them at the time. Most people on the management team thought we should concentrate on children instead, but I felt that a person could have an inner child at any age."

Why this is important is because of my activities as a radio amateur. We as a community keep saying that we should grow, that we're losing too many people, that we need to engage with S.T.E.M., or Science, Technology, Engineering and Mathematics. Whilst that may be true and whilst JOTA and Scouting might give us exposure to fresh new people, there's a massive community of adults who already know about our hobby. They just don't yet know how it might interact with them, personally, or how they might find it interesting, or engaging, rewarding, and all the other things that you as an amateur already know about.

So, if there's Adult Fans Of Lego, why not Adult Fans Of Amateur Radio?

While thinking about that, how would you talk to them, how would you go about finding them, relating their interests to our hobby, finding common ground and discovering even more things that we can add to the thousands of amateur activities we already know about?

I'm Onno VK6FLAB

The other day I lamented to a fellow amateur that my shack was not functioning well. Specifically, my main workstation died three months ago and ever since I've been struggling to reclaim my productivity. One aspect of that is my desk. For half a decade or so I've had my computer clamped to a rolling lectern. It allowed me to move around my office as my mood and the light from the window changed.

During the weekly net I'd move my lectern and computer next to my radio and host the net whilst logging on my computer.

That's no longer possible because of a number of reasons, so instead I was trying to accomplish the same thing on a tiny 13 inch screen which didn't work for me. My friend asked me why I hadn't just extended the microphone lead from my radio, so I could sit at my now stationary computer and still key the microphone. I located an Ethernet joiner, an Ethernet cable and did just that. Simple. Job done.

Then I started wondering why I wasn't on HF with my station and if there was a simple solution that was eluding me. Spoiler alert, it still eludes me. The requirements are not too complicated, well at least in my mind they're not.

I want to operate on HF. I want the computer to not be physically, or specifically, electrically connected to the radio, in any way. I need to be able to use logging software that tracks the radio band, mode and frequency. I'd like to use digital modes, I'd like to have a computer controlled voice keyer and I do not want to run Windows and if I can at all help it, I'd like to spend as little time as possible doing this without spending an arm and a leg.

So, then I started wondering what this looks like for other people. What kinds of compromises have you made in your shack? What have you accomplished and how did you get there? What choices of hardware and software did you make, and why? Did you give up, or face the challenge head on? How did you gather information and how did you find out what others did?

Not for a moment do I think that this is a simple thing to solve, but it's clear to me that I'm so far down the complicated rabbit hole that I'd like someone to show me the light at the end of the tunnel to make some progress.

Of course I've not been idle while all this is happening. I configured a Raspberry Pi, a small single board computer, to talk to my radio via USB. I connected a sound card to the audio connector on my radio. Theoretically this should give me all that I need, but the difference between theory and practice is common knowledge, in theory it works, in practice it doesn't. The Pi is a few years old, but it's not doing much at all. It connects to my network wirelessly, so my main computer isn't physically connected to the radio, but it's still pretty unreliable and I have to say, calling CQ, either using voice or digital modes, should be rock solid. You don't want your radio to keep transmitting after it's supposed to and other little issues like that.

So, how did you do this? I'm interested to know. I'm not the first person to run into this issue and I'm not the last. Your experience might help me and it might help others. Drop me an email, cq@vk6flab.com and I look forward to hearing about your adventures.

I'm Onno VK6FLAB

At my local hamfest on the weekend I picked up this 6-way coax switch. I've been furiously searching my little heart out, but haven't actually discovered any sign of it.

How do I wire this up? What do I need? What specifications does it have? Anything you can share?

RF Connectors

Connector view of a 6-way coax switch with common connector in the centre surrounded by a hexagonal arrangement of inputs, each an N-type connector. !

Side

Side view of a 6-way coax switch showing mounting hardware and the label !

Control Connectors

Control wire connection view of a 6-way coax switch showing 6 numbered terminals with IND marking, 6 numbered terminals with LOGIC marking and 3 central terminals marked CP, CP and 28V respectively. !

Label

Product Label with the following text:

text K&L 50140 6LMP-28-F-N-I-TTL S/N CC649-2 D.C.9002 !