All is not Well and Good (updated)

Over the past days, small receiving loops have been the focus of my attention. It's an entirely new avenue for me, even though I've been making and using HF magnetic loops of the more usual, tuned type, for many years.

Most people who helped me advised that the WellGOOD (my emphasis) loop boards provide excellent reception, and there were a small number of views expressed - I can make no comment about their accuracy or otherwise - about the quality of the competing, WellBROOK (my emphasis) loops. Wellbrook are long-established and their loops much-used, across the world (update: they ceased trading with the reason given as "retirement" during 2023. The owner, Andrew Ikin, died later in the year).

X-ray of Wellbrook circuit, the taking of which seems to have caused some inexplicable offence to some Wellbrook supporters. Image: M1GEO/WellGood project web site.

Now, horses for courses: the Wellbrook loop costs around £264 for the latest version. The WellGood boards, just £43, delivered. You don't get a physical loop with the WellGood, but any old scrap will do for that - RG213 outer or some spare copper or aluminium tube; a non-cost item for most of us with any amount of stuff stored in our shacks.

Now, I have never tried a Wellbrook. I was intent on buying one, but when I enquired, there was no stock until the New Year. OK, I needed a loop before then. So that was the Wellbrook out, from the get-go.

I then decided that, for £43, it was worth trying the WellGood. It was in the post and with me within about five days, despite postal strikes and the busy period - well before I needed it to hear SAQ's Christmas transmission, since cancelled.

The build quality of the WellGood boards is very good, and one couldn't expect anything better. The performance is, to my mind, outstanding, based on my general experience as a licenced amateur, and leaves nothing to be desired.  I have never tried a Wellbrook, to be clear about that.

My WellGOOD (my emphasis) bias-tee board. Good quality and the overall system gives excellent results. The enclosure is my own; there are none supplied with the Wellgood boards.

 

Looking around the internet, I then happened upon a video that set about, for nearly ten, agonising minutes, comprehensively trashing the maker of the WellGood loop. A lot of harsh and, to my mind, defamatory comments were made by this person, who does admit to "knowing" (00:29s - 00:30s in to the video) "Andy", owner of Wellbrook. The video, at the time of writing, has had 3,300 views. The transceiver in his background, by the way, has a RRP of £7720. But it's nice he's worried about how you spend your own money.

The video was posted on March 16, this year (2022). Here's the proof, accessed 22/12/2022. It's relevant to note that WellGood have been selling since 2015; it's not known what prompted such an unpleasant video, a whole seven years later. But it is possible that reviews such as this, published two months earlier and which highlighted the "much, much better value for money" of a (£45) competing loop (a MLA-30, not WellGood), might have caused concern:

I don't know what this man - it seems to be this operator - thought would be the impression sent to those watching it, other than it's more than a bit puerile, and makes almost spitting-out-of-side-of-mouth assertions that no person concerned about a libel writ would ever consider.  Suffice it to say that, had I seen this unedifying video before deciding on a loop, it would simply have driven me towards, not away from the WellGood loop this man tells us, more than once, not to buy.  

Others clearly agree: after first publishing this post, I later gathered that, within two hours of this first video going out in March this year, WellGood sold the entire stock, which had just been replenished in large quantity.

Looking around some more, the next video that came up was - would you believe it? - a "rant" about the, erm, WellGood loop, issued on, erm, the very same day - March 16, 2022. A coincidence? There are few videos about the WellGood, and these are the only two that set-out to trash that antenna, especially in such an aggressive and quite similar manner.  Here's the proof, again accessed 22/12/2022. The publisher refers directly to "Clint", the first video's publisher, and to having "spoken" with him in the past. At the time of writing, it had attracted 605 views. When I checked about a year after this post was written, the video had been deleted.

A screengrab of a video, since deleted, criticising WellGood in much the same way as Clint's efforts.

The publisher of the second video admitted (3:28-3:36) "I don't know too much about the WellGood project", whilst then immediately trying to portray himself as knowing enough to make a critical video that includes statements such as (3:49) "WellGood rubbish" - a term also used in the other video (at 8:25 in).

In the first video, the publisher lists, seemingly referring to notes, things he considers are "illegal", immediately followed by statements that he's not accusing anyone of doing anything illegal (4:49 in).  Why, then, he embarked on detailing such matters in a video specifically and principally made to criticise WellGood, is a matter only he can explain. There is no evidence shown to demonstrate as true the negative claims made against the WellGood system; the best we get is the bland assertion (8:52) that it "probably won't work as well [as the Wellbrook]". That's not objective. That's just guessing.

If you're interested, Clint, this is how you perform a proper, objective, evidence-based comparison. The claim of the WellGood being "rubbish" is clearly unsustainable.

The first video also asserts, more than once (0:38 and 8:56 in), that Wellbrook is "a legitimate business", which rather suggests the view being expressed - Clint can clarify if he wishes - is that WellGood is not legitimate. That does not appear to be fair, or true.

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UPDATE: A couple of months after my post first appeared, I discovered that Clint had been busy not only on YouTube, but also on M0TAZ's blog page about active loops. M0TAZ's post was published in April 2021. A full eleven months later, Clint decided to wade-in to, yes, once again, defame WellGood by saying the "IP" was "effectively stolen from Wellbrook".  It's reasonable to say that Clint either has an unhealthy obsession with trashing WellGood for no good reason, or he has rather more connection with Wellbrook than he is letting on. I've asked Wellbrook's owner to provide details on any "IP" it owns, and to clarify the company's relationship, if any, with Clint. 

On 17/02/2023, I received a single-sentence response from Andrew Ikin of Wellbrook, which stated that "the person in question [Clint Gouveia] has nothing to do with Wellbrook".  Mr. Ikin did not provide any response to the question of whether or not he agreed with the content of Clint's video. There was also no response to a request for details of any IP protection owned by Wellbrook. There is no record I can find of any IP owned by Wellbrook or the people who (were) involved with it.

M0TAZ, giving Clint the entirely appropriate response.

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This kind of thing doesn't look good, to anyone. It looks, frankly, pathetic. I make no comment or suggestion on Wellbrook's involvement or otherwise in this matter.  But the first video claims - I again can make no comment as to its veracity - that he spoke to the maker and that he "agreed" with "everything" that was to be said. Well, given that the competition was to be trashed, I suppose that was more likely than not.

Text accompanying the first video. Contacting the owner of WellGood for comment didn't seem to matter.

If Wellbrook are good makers, then they can be confident of their brand and product; they are of course well-known and well-used. There is no need for their users to moan about alleged "IP" infringements, alleged illegality and "piss-takes". If there is something wrong legally, then the proper avenue is to pursue it through the courts. There is no evidence I can find that this has been attempted and, 9 months on from the videos, WellGood are selling, without hindrance.

Arguments about morality are just silly; if it isn't prohibited, then it is permitted. This is business, not religion. Posting videos like this will hinder, rather than help any legal case that could be brought. But let's be clear: there won't be any, especially at this, very late stage. Which just raises the question: why bother making the video at all?

Washing your dirty laundry in public is not a good idea. This is especially so when the general concept and implementation of this antenna type has been around since at least 1975, with later developments published in 1999.  

For all these reasons, I would advise the complete opposite to Mr. Clint: buy a WellGood!

Declaration of interests in either maker: none, other than a recent customer of WellGood boards.

I am happy to consider publishing non-defamatory, objective comments from any party included in this post. 14/02/2024 update: the reasonable period of one year for responses has now elapsed and no comment will be published from this point on.

Getting ready for SAQ

IT SEEMS A WELL-HIDDEN NOTE ABOUT COVID INFECTION AMONGST OPERATORS ON THE ALEXANDER ASSOCIATION WEBSITE MEANS THIS EVENT WAS CANCELLED AS OF THIS MORNING.

 

As someone who's written a book about a Marconi VLF station, it's a bit odd that I have always somehow failed to listen-out for the last-remaining, working Alexanderson alternator VLF transmissions from UNESCO World Heritage site, SAQ at Varberg, Sweden.

 

This is all the more odd, because Karl-Arne Markström, retired Systems Engineer for Swedish Telecom Radio, owner of the SAQ site until 1997, wrote the foreword for my book!

During the year, to help support the continued operation of SAQ, I joined the Alexander Association, which is something I would encourage you to do, too - it's just 12 Euro! This meant I got an email recently, announcing that SAQ, after a period of non-operation due to parts problems, would fire-up and transmit again on 24/12/2022. The event will be livestreamed on You Tube.

This rapidly-spinning disc of high-tensile, toothed steel will transmit at 17.2kHz on Christmas Eve. Image: Alexander Association.

The usual mad rush to equip myself for the event then ensued. After some discussion on Mastodon, I was directed towards a passive loop antenna, which I built. This works fine, receiving the German DCF-77 time signal at 15kW quite clearly, with strong directionality.

My first VLF, passive loop. Works OK, but can be improved upon.

 

Schematic for the 'YouLoop'-type, passive antenna.

I was also told about the Wellgood (not Wellbrook) loop and bias-tee boards, to which one simply adds any description of a roughly 3m circumeference loop; I used RG213, utilising the braid only.

For £44, delivered, the Wellgood seemed like very good value, next to Wellbrook's latest loop antenna, which comes in at £264. 

I used a couple of small IP66 boxes to enclose the boards; a couple of holes for wires and sockets need to be drilled and widened using a reamer. 

The loop board, in its IP66 enclosure. Ideally, it should be higher, to allow water to drip off the wires, rather than run into the box.

 

The bias tee needs a quiet 12V supply, so something like a linear PSU or battery (there is only a ~120mW draw) is ideal. For portable use, I attached the bias tee box to the stem of the loop, but for permanent outdoor use, the tee is best located indoors.

The bias-tee board mounted in its box.

 

For reception, I tried my trusty SDRPlay RSP1a. All connected-up, this proved to be a huge success! Signals at VLF are simply astounding - with a loop merely 1m across! You can switch to any band you like, without any need for tuning and, voila! Strong signals on all of them!

There's clearly no doubt that SAQ, putting out around 80kW of its maximum 200kW, should be easily and strongly detected on the 24th. But I will have both the passive loop and short Beverege antennas up as standbys and for comparisons.

Here's how it receives, from within my house, DCF-77 and MSF time signals in Germany and the UK, respectively. There's also some long-wave commercial signals from Ireland (252kHz) and BBC Radio 4 (198kHz) at the end:

 

Whilst I was beign excited over on Mastodon about this antenna system, someone piped-up an opinion that, but for digital signals, these antennas were of no use; we perceive them as useful, he said, because of the amazing abilities of digimodes to pull signals "from the noise". I opted-out of this pointless, wrong and very tired discussion, and instead went to prove it as such with some examples. 

Here's a quick look at 14MHz SSB. Clearly not the proverbial "dummy load" claimed by my Mastodon acquaintance (now blocked):

 

And if FT8 is more your thing, this is how a few minutes on 20-10m turned-out on receive this morning (terminator correct for period):

 

Early morning at the beach

 

Up early today.  Another sub-zero day, the sixth in a row this week, but skies were clear.  I decided to head down the beach on the east coast of Anglesey to see what signals might waft in.

20m wasn't looking very promising, so I tried 17m on FT8, there being nothing much happening on SSB. The usual stream of JA stations came in quite nicely, with good strength signals.

Sub-zero temperatures, but a lovely morning at the beach, facing east.

Up on 15m a few minutes later - it was still only 9am - and there was plenty of action from Russia and, on 21.250MHz, ZL4RMF was coming in at around 5/3, but strengthening. There was a slight but distinct echo, indicating simultaneous long and short path reception or, more correctly, given ZL's position, antipodean focusing multipath.

The 'shack'. FT8 on 17m to start with.

I made a quick video of the QSO before I made a successful call to Ron - not bad with 50W PEP and a stick antenna plus, of course, the considerable environmental gain from the seaside location. Ron even greeted me with a perfect 'bore da!' (good morning!), which is something I get a lot more from the other side of the planet than from folks across the border with England!

First JA of the morning. One of several I eventually logged.

 

With Ron and a few Siberian SSB QSOs in the bag, I felt very happy with the brief beach visit, which lasted less than an hour.  Here's to the next one!

Winter WSPR Wonderland

Yes, winter arrived in good fashion (by our standards) in Wales this past week. Temperatures hovering around freezing all day and night. Not the best time to do portable radio!

A quick lunchtime walk up the hills, as good snow arrives for the first time this winter!

 

Just before the coldest weather arrived, I'd deployed WSPRlites attached to a 30m vertical at my marshy field shack and, just a couple of km away, a 20m vertical at a lakeside. I run these tests, partly out of an interest in winter night-time propagation, and also very much to highlight that the antenna's environment is absolutely critical to performance - something almost universally ignored in antenna discussions and videos.

WSPRlites are very robust units, but periods of freezing weather have, in the past, led to a failure. As the snow started to fall, I was a bit concerned that the 20m unit, which was in a plastic bag in the open, might also go the same way. There was also the prospect of a nearby otter having a chew (they have very powerful jaws!) on the coax. The 30m unit was fine, being inside a brick and concrete shed.

Anyhow, it turns out everything carried on working very well. I generated a long run of several days' worth of data, so that the comparisons with other stations were robust.

I'lll start with the 30m station, seen below, operating as MW6PYS (my daughter's callsign):

Beautiful winter weather, with the highly-unusual condition of low wind speeds!

The overall results in terms of geographic spread of the 200mW put into the vertical at 30m was as follows:

200mW, out to the world at 10MHz.

Already, we can see that the performance is extrmely good, covering the entire planet, at least insofar as there are any stations to hear.  

The comparative performance is most painlessly summarised by WSPR Rocks' beacons list. Sadly, this doesn't sort stations according to power, but only by the number of stations who heard any given beacon. All the same, we can easily sort by eye, and here's the list. Again, my 30m station operated under my daughter's callsign of MW6PYS; MW1CFN is my indoor magnetic loop - ignore that for now:

MW6PYS, my 30m station, is third in the 200mW rankings, of which all are based in the UK. The two ahead of me - G0MBA and G0PKT - are both coastal beacons. So I can be perfectly content that my 30m station is performing extremely well. 

Incredibly, this garage-based loop was 10th, globally, on 20m!

 

I am not sure what kind of stations sending 5 and even 10W are doing to end-up below my 0.2W, but there we are. But it's worth noting, in passing, that my garage-based magloop (MW1CFN) is surrounded by metal yet still ends-up in tenth overall position, anywhere in the world, at any power!

And now for the 20m results. Here, first of all, is the situation of the antenna:

The 20m vertical, operating also as MW6PYS. You can see just how calm it is!

The geographical reach looks like this:

Again, this is good performance, notably given that 20m is not such a spectacular band of late - something which is seen in just how many stations are using up to 5W output. Before I get too negative, let's look at the WSPR Rocks! ranking for the 20m beacons, see how I did in comparison to others:

What?  47th? Not so good!  Until we look carefully and see that, from the UK, I am actually the second best 200mW station. I believe that the best station, M0GUC, is using a Yagi (happy to be corrected).  The lakeside location, which has previously been shown to confer up to 10dB environmental gain over a terrestrial vertical, is thus shown again to be excellent.

Marconi for Christmas?

Well, it took five months and more work than I had ever anticipated. But the results is a nearly 200-page study of Marconi's Carnarvon transmitter site in north Wales.

 

You might think it too geographically-niche for where you are, but much of the station was replicated across the world, whilst certain elements were unique.

In the words of the Marconi Co. itself:

"The history of the Carnarvon station is, in large measure, the history of the Marconi Company’s work on high-power transmitters..."

You can buy a copy of my work, the first to use fieldwork and archive study to fully examine and understand this vast site in the 83 years since it was dismantled, using the PayPal smart button here - just £9.99 and available worldwide.

You will also receive a free, meticulously-prepared Google Earth-based plot of the features identified during the fieldwork, and how it all fitted together as a multi-antenna VLF site. 

The text and countless images are delivered as a PDF file; you will received a password to access the file after purchase.

Marconi MUU inverted-L transmitter site early in its life (1913, possibly before radiating wires had been installed).

 

 

Indoor Magloop vs. Lakeside Vertical

It’s not uncommon for most hams, at some point in their radio lives, to find themselves unable to erect an outdoor antenna. Most of us have neighbours who often seem increasingly intolerant of anything remotely out of the ordinary, and/or we may not have the space, anyway.

We had to move away last year from a QTH that we’d occupied for 13 years. It was a good place for radio, but not so good for family life, being distant from where most of us wanted to be.

So, temporarily finding ourselves in a less-than-ideal home radio location, I’ve sought to use magnetic loops. To be honest, so little interest do I have in our current property that I can’t be bothered even to begin setting up a loop outdoors. So I’ve hung a loop I alread had from the garage ceiling!

The garage magloop - a truly ‘compromise’ environment!

I realised many years ago, through experiments with loops in my timber decked, flat-roofed kitchen extension, that 60m and 30m radiation, particularly, travels well through that material with little loss.

Sure, the block walls and so on add to the overall performance degradation, but it’s not remotely as bad as we might imagine.

I’ve been running the loop, which is a square, 15mm copper pipe construction, about 1 metre on a side, at 10MHz WSPR for some time now. The results are surprisingly good; one day last week, my 5W signal got to Hawai’i at a healthy -17dB.

Past week or so of spots from the indoor magnetic loop, using 5W input. Global DX really is possible, even from such a poor location.

Now, 5W seems like a lot of power for WSPR. But we have to be realistic and make sure that a reasonable amount of power leaves the garage innards; it is, after all, surrounded by block walls, a large metal door, and all manner of disassembled antennas, waiting for better radio days ahead.

How well, then, would 5W from this indoor loop compare with 200mW sent from a tried-and-tested, elevated 1/4 wave vertical with two elevated radials, set-up at the local lakeside?

The superb lakeside location for the 30 metre 1/4 wave vertical. I have an otter for a friend at nighttime here!

The lakeside location has much better ground conditions than practically all other antennas operating out there. In previous tests, the direction facing the water gave up to 10dB enhancement over an indentical antenna based on a low hill with a view of the sea, but not at the water’s edge. Typically, we can expect something around a 4-8dB benefit from fresh water locations.

Because of this good location, and the need to operate the antenna in the field on USB power, 200mW was considered a good power level to send. The data I present is from around 2.5 days, or 60 hours’ worth of operation.

Using the analysis tools of SOTABeams’ DXPlorer, we can first compare the raw graph of geographical reach of the two antennas. MW6PYS is the vertical, MW1CFN the magloop:

By eye, we can already see that the two antennas are reaching very similar distances - remembering, of course, that we are using 14dB more power into the indor magloop to achieve this near-parity. The figures on the top left give a mean 16.4% (of the maximum distance attainable between two points on Earth) for the vertical, whilst the magloop comes in quite closely behind at 14.5%. In terms of maximums, the vertical gets 41.1% of the way round the planet, whilst the magloop managed 36.8% - again, not much of a difference.

This is what the physical reality of those lines looks like in terms of actual spots:

Most WSPR analysis you read stops there. But it’s not enough. Let’s look at how simultaneous spots - across all distances - compare:

It’s quite rare to see such a distribution in antenna comparisons. There are huge differences to some stations, both in the positive and negative directions, likely showing large differences in overall radiation pattern between the antennas.

The vertical comes in 2.8dB, in round terms, behind the magloop. Recalling we’re putting 14dB more power into the loop, and taking 2.8dB away from that, we get an absolute figure for the vertical of being 11.2dB stronger than the loop across all distances.

Even this plot hides important information, so let’s look at the performance beyond 5020km, or DX distances:

We now find the vertical come in at only 1.1dB behind the magloop, or an absolute difference of 12.9dB on DX paths (i.e. 14dB - 1.1dB).

Now, these are substantial performance differences. But we must recall that, being situated at the lakeside, which is not a location available to anyone other than the luckiest of operators, the vertical is ‘cheating’, benefiting from at least 4dB, and probably more like 8dB on DX paths.

This means that the true, power-normalised difference between the antennas, if located on a typical, non-watery location, is anything between 8.9db to as low as 4.9dB. This overall point is well-illustrated by comparison of the lakeside vertical with other United Kingdom 10MHz stations:

Comparison with G3OJI, showing the benefit of a watery ground. This result is typical across other UK beacons.

What does all this mean? It means that an indoor magnetic loop antenna, even where it is surrounded by metal, can perform at a level where you will obtain perfectly reasonable, global coverage with digital modes, using modest powers of only a few Watts.

SSB might be another matter altogether, but CW and things like FT8 can bring you the DX goods. If people went back to using things like OLIVIA, JT65 and JT9, then the wonderful sensitivity of those would make an indoor magloop and even better proposition. Sadly, though, those modes have fallen out of favour where they were, just a few years ago, the default modes.

And whilst we're here, we may as well make full use of the valuable WSPR data by looking at how well my freshwater site compared to G0PKT, who is near the sea in the SE of England:

Freshwater (blue) vs. seawater (red). As we already know from my earlier experiments, the coast offers substantial 'free' gain. Both antennas are verticals.

 

Finally, here's the list of top 10MHz WSPR beacons on 3/12/2022. The list is, rather stupidly, not renormalised according to power. But you can see MW6PYS (lakeside) is third in the list of global unique stations reached. Rather amazingly, MW1CFN, the indoor magloop, is pretty high up the list, too!