It looks as if there was an opening on the 40 MHz band on Tuesday the 6th of April 2022 when the FT8 signal from Paul, G9PUV (G7PUV) was heard by TT8SN in Chad.
TT8SN 8m FT8 4518 km 14:25:11
It looks as if there was an opening on the 40 MHz band on Tuesday the 6th of April 2022 when the FT8 signal from Paul, G9PUV (G7PUV) was heard by TT8SN in Chad.
With the recent increase in sunspot numbers and the improvement on the HF bands, there has been a lot of interest in the ZS6WAB beacon on 40.675 MHz. This beacon which usually sends a message in CW is now seen as a valuable early warning system for potential openings on the 50 MHz band between Europe and South Africa.
In the first quarter of 2022, a total of 52 stations uploaded reception reports to the DX Summit DX cluster and a map of these are shown above. Outside of Europe, there are two to note.
a) TT8SN in Chad at about 4,300kms was most likely one F2 layer hop.
b) There was a spot on the cluster from W3PQS in the USA but unless I hear otherwise, I think it's a mistake (not counted as part of the 52). I sent W3PQS an email but got no reply.
Europe... This is the map for Europe in more detail...
As might be expected, the majority of the stations that heard the 40 MHz signal of ZS6WAB are located in the southern half of Europe.
As for propagation modes, it's likely TEP was involved with some F2 layer reaching as high as 40 MHz as well on this North-South path.
It was interesting to see that the signal from South Africa managed to reach OH5ZA in Finland as well, a distance of almost 9,500kms.
It's interesting to note that both DK2EA and F4CXO reported hearing the 40 MHz ZS6WAB beacon on 22 days in Q1 of 2022.
Caveat... I used the DX spots from the DX Summit cluster to compile the data for this post. It's possible there were other spots which were not on this platform but other sources of information are incomplete. I do think however it gives a reasonably accurate picture of who heard the South African beacon on the 40 MHz band.
In Conclusion... First off, it's great to see so many stations in Europe active and listening on the 40 MHz band!
I think the reception reports of this 40 MHz beacon shows just how valuable an allocation between 28 MHz and 50 MHz can be, especially for beacons.
It would be nice if more countries allowed one off experimental 40 MHz beacons as advocated by the IARU even if an amateur radio allocation is unlikely.
Most of the signals under 165kms were most likely tropo, it's not so obvious the mode of propagation for G0JHC, EI9KP & S50B.
Phil, EI9KP reports... "I tuned to 40.680MHz and just let it sit on FT8, to my susprise I logged UK Innovation and Research License "G9PUV". The 'CQ' call got forwarded automatically to PSKReporter. For reception I use a Delta Loop in Horizontal Polarization."
The screen grab from Phil is shown above.
With the Sporadic-E season starting soon, there should be plenty of reports of the UK stations from across listeners across Europe.
In a previous post, I outlined how several radio amateurs in the UK were in the process of applying for Innovation and Trial licences from OFCOM to carry out tests on the 40 MHz band.
The RSGB have now outlined the position of OFCOM on the issue...
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RSGB statement concerning 40MHz in the UK
There have been recently a number of reports of individual holders of UK Amateur licenses gaining Innovation and Trial licences from Ofcom to conduct experimental transmissions on 40MHz (8m).
Ofcom has made it very clear for several years that there was no likelihood of UK radio amateurs gaining any access to 40MHz which included NoV (Notice of Variation) to a UK amateur licence or an amateur SRP (Special Research Permit).
The RSGB has consulted Ofcom as to the exact status of these Innovation and Trial licences. Ofcom’s reply was as follows:
“We have been approached by a couple of individuals wanting to conduct experiments in the band. Like all other research and innovation requests Ofcom receives we have put these through our Innovation and Trial licensing regime. If the coordination checks are passed, they are being issued with an Innovation and Trial licence. These are issued for up to 12 months on a non-interference, no protection and non-operational basis.
These are not Amateur Radio Special Research Permits and licensees do not fall under the Amateur Radio licence terms and conditions. Therefore, applicants are not required to have passed an amateur exam or hold a callsign. Although we are allowing this experimentation, we would like to make it clear that we have no proposals to allow wider amateur radio access to the 40 MHz band.
Clause 9(6) of the UK amateur terms states “The Licensee may receive Messages from an overseas amateur or from an Amateur duly authorised by Ofcom on a frequency band not specified in Schedule 1 but the Licensee may only transmit on a band specified in Schedule 1 which is authorised under Clause 9(2).”
Users of 40 MHz under an Innovation and Trial (I&T) licence are not authorised under the Amateur Radio licensing regime and there is no requirement to have passed an amateur radio exam to obtain such a licence. Clause 9(6) of the Amateur licence is designed to cover additional frequencies, such as 70 MHz and 146 MHz, which are not contained in Schedule 1 of the Amateur Radio licence but Ofcom has authorised via a Notice of Variation (NoV).
We would like to make clear that we have not duly authorised any amateur to use a frequency band not specified in Schedule 1 through this process. Reception of transmissions authorised under an I&T Licence should therefore be treated the same as those authorised under other licences that Ofcom issues such as business radio or maritime.
We would also like to make clear that I&T licences do not permit operational or commercial use. These licences are designed to support individuals and companies in carrying out research, development, testing and demonstrations of equipment.
Therefore, the use of the 40 MHz band under this licence should be for these purposes only. The licences are granted on the basis that the user will be carrying out such research and not operating on the band in a similar way to the frequencies listed in Schedule 1 of the licence.”
Ofcom’s view is very clear. Any operation on 40MHz in the UK is not Amateur radio and therefore cross-band contacts to such stations by UK radio Amateurs operating on the bands licenced for amateur radio are not permitted.
*** RSGB Statement Ends
Just to highlight that the RSGB are just outlining the position of OFCOM so there is no point in bashing the RSGB over this.
At the start of March 2022, I reported on how there was some 18,000km plus openings on the 50 MHz band between New Zealand and the Canary Islands. See previous post HERE.
About a week later on the 15th of March 2022, this distance was exceeded when there was a long path opening on 50 MHz between the east coast of Australia and the Canary Islands. The distance on this occasion was an amazing 21,100 kms!
I'm a little bit late with the post as I've been busy but it's worth highlighting that it happened. There is no shortage of long distance openings on the 50 MHz band at the moment but these tend to be mostly North-South and TEP related.
It's easy to just look at the map and so what? But remember this was at 50 MHz, a VHF band and not down on the HF bands where long path openings are pretty common.
It looks as if FT8 was used by most stations for the opening. The partial screen grab above shows the contact between EA8TL on Tenerife and VK4MA near Brisbane.
Amazingly, Jorge EA8TL was using just a Hexbeam for the contact and he was beaming towards the Caribbean.
The opening wasn't confined to just VK4MA and EA8TL. These are some of the spots from the DX-Cluster.
As for how much of the signal was due to F2? Sp-E? TEP?
Just for the record, the solar flux on the day was 110.
In a previous post, I outlined how some radio amateurs in the UK are obtaining special permits to operate and experiment on the 40 MHz band. As part of the feedback, someone mentioned the old G9 callsigns which were a Test & Development license in the UK.
Anyone familiar with old copies of the Practical Wireless magazine will remember antenna articles and designs by Fred Judd, G2BCX. He popularised antennas like the Slim Jim for 144 MHz and he used the callsign G9BTN for much of his work.
Lewis, M3HHY put together a nice video about the history of these G9 callsigns and it's embedded below.
In a previous post in February of 2022, I reported on how the UK licensing authority OFCOM had refused to give NOV's (Notice of Variation) to radio amateurs to carry out tests on the 40 MHz band.
The good news is the OFCOM are allocating temporary Innovation and Research licenses.
Roger, G3XBM in the east of England can operate from the 2nd of April for 1-year with 5-watts. Roger writes... "After a very long wait OFCOM has approved my 8m TX permit that runs from April 2nd for a year.
It permits me to use 40-42MHz with digital modes (including CW) at 5W ERP max. I expect to erect a wire dipole which is directed towards Europe.
I expect to be mostly on FT8 around 40.676MHz with precise frequency done in liaison with others. What I hope is all 8m FT8 stations can be monitored with one USB dial setting, but spaced out. 5W should certainly cover Europe with Es. I shall try some local CW crossband QSOs, but hope to be on FT8 24/7."
***
John, G0JJL in the north-west of England can operate from the 1st of May 2022. John writes... "I am one of the UK Amateurs that have recently obtained a temporary 12 month licence to transmit on 40MHz.
These licences are not Amateur Radio special permits, they are Innovation and Research licences which have nothing to do with Amateur Radio at all. In fact, anyone in the UK can apply for this type of licence whether they are a licensed Amateur or not.
The UK regulator, Ofcom, do not issue callsigns with Innovation and Research licences, it is up to the licence holder if they wish to use one and the licence holder can use any callsign of their choice. Some UK Amateurs who obtain an Innovation and Research licence might decide to use their Amateur Radio callsigns on 40MHz and this is perfectly legal so far as Ofcom are concerned. However, using their Amateur Radio callsign on 40MHz does not mean their station is then an Amateur Radio station operating on 40MHz, it is not, it remains an Innovation and Research licence station only and this as been confirmed by Ofcom.
My Innovation and Research licence was granted to allow research of propagation in the 8m band and my licence permits use of 40.680MHz and 40.690MHz using narrow band digital modes and CW from 1st May 2022 from two locations. The callsign to be used is GR9A."
***
Neil, G0JHC in the north-west of England has also applied for a permit and will be using the callsign GR9B. Neil is located in the same area as G0JJL.
* * *
Paul, G7PUV in the south-east of England is currently applying for a permit. Others are likely to follow.
Analysis... This is indeed welcome news as it allows more signals on the band which is great for experimentation. There's only so many times you can report a beacon on 40 MHz.
At the end of April, the Sporadic-E season will have started and it should be quite easy for the UK stations to be heard in countries with permits like Slovenia (S5) and Croatia (9A) which are around the 1200km mark.
By late May and all of June, there should be plenty of short skip Sporadic-E with distances in the region of 500-1000kms possible.
There are plenty of opportunities for radio amateurs in the UK to participate in these experiments by listening for the permit holders and working them cross band from 40 MHz to either 28 MHz or 50 MHz.
40 MHz is an excellent band for meteor scatter tests. Tropo contacts up to 200kms may be possible and aircraft scatter propagation can also be explored.
Trans-Atlantic contacts to the permit holders in the USA should be possible in May and June by multi-hop Sporadic-E. There is also the possibility of very long paths to South Africa.
Maybe in time, radio amateurs in the UK will get an allocation at 40 MHz but for now, this is a 'foot in the door'. The results of these Innovation & Research permits can be used to show a real need for a formal amateur radio allocation for this band.
Can EI stations work these special permits? ...Not to be pedantic but the answer is no. In Ireland (EI), the amateur radio license states quite clearly that we can only make contact with other radio amateurs. Making contact with a special experimental license in the USA, Canada or the UK is not the same as say Slovenia, Croatia or South Africa.
It's up to EI stations what they do formally or otherwise but I'm just clarifying the current situation.
The 40 MHz / 8m band is one part of the spectrum which is very much experimental in nature be that for checking propagation or equipment.
With that in mind, the EI1KNH 8m beacon near Dublin on 40.013 MHz is currently trialing different modes. These include CW, FT8, SSTV, RTTY, MSK144, WSPR and stepped power levels.
The modes and time sequence is shown below and any reports and feedback should be reported to the beacon keeper, Tim EI4GNB.
Note that this is an experiment. It's highly likely the modes will change again in time depending on feedback and what reception tests people are carrying out.
Saturday 19th March 2022: I was checking my 28 MHz log for WSPR when I noticed that I had heard the Canadian Arctic Research Station VY0ERC.
What is unusual about this is that the station is located on Ellesmere Island at 80 degrees north in the Canadian Arctic and this was on 28 MHz, not one of the lower HF bands.
In the last 5 weeks, it has only been heard on 28 MHz by 3 stations in the direction of Europe.
Station details... Eureka, Ellesmere Island, Nunavut, Canada. VY0ERC is currently operating out of the Polar Environment Atmospheric Research Laboratory (PEARL) Ridge Laboratory (RidgeLab) located on top of the hill at 80 degrees 3 minutes N and 86 degrees 25 minutes W at 600 m.a.s.l.
The WSPR station was running just 200 milliwatts which makes it even more remarkable.
There are a few things that make this reception report unusual.
1) It was on 28 MHz and it's not usual to hear signals from so far north. The solar flux on the day was only 94 and most propagation paths are much closer to the equator.
2) The distance for me was 4,134 kms which suggests perhaps it was F2 propagation? If it was due to other propagation modes closer to the E layer than multiple hops would be required.
3) No distortion. Signals going across the polar regions tend to have an auroral flutter, something that is not conducive to WSPR.
4) Why the lack of stations hearing the signal in Europe? Why only two in the UK and Ireland?
Back in October of 2021, I reported on the first ever contact between South Africa and Slovenia on the 40 MHz band. See post HERE.
On the 13th of March 2022, there was another 'first' 40 MHz contact when when Milan, 9A2Y in Croatia managed to complete a successful FT8 contact with Willem, ZS6WAB in South Africa.
The distance was in the region of 7,585kms and it took place at around 12:36 UTC. This would have been an hour or so after local noon and the F2 layer was likely at it's highest ionization.
Considering it was a North-South path, I suspect that F2 and TEP propagation was involved without any need for a Sporadic-E extension at either end.
The solar flux on the 13th of March was at 123 which is a lot higher than last October when it was just 78 when the first ZS-S5 contact took place.
The screenshot above from 9A2Y shows the FT8 contact. As can be seen, the signal from ZS6WAB was -5dB in Croatia which suggests that a contact on CW would have been possible but unlikely on SSB.
Equipment: I'm not sure what 9A2Y was using but ZS6WAB uses an old ICOM IC-706 for the 8m CW beacon with a 5-element YU7EF designed Yagi so I presume that is what was used.
Antenna stack at ZS6WAB with the 40 MHz Yagi at the top |
Quite a number of European stations have reported hearing the ZS6WAB beacon on 40.475 MHz over the last week or two. Considering it's located halfway between the 28 MHz and 50 MHz bands, it is now hopefully giving early warning of potential 6m openings between South Africa and Europe.
As always, if you want more information on the new 8m band then check out the links on my 40 MHz page.
A few days ago, I reported on an 18,000km+ opening on the 7th of March on the 50 MHz band between New Zealand (ZL1) and the Canary Islands (EA8). The previous post is HERE
On the 9th March 2022, there was another similar opening on 50 MHz but this time, it was only between two stations. As the map shows above, ZL1RS on the northern part of New Zealand managed to complete a contact using FT8 with EA8DO in the Canary Islands.
This is a screen shot of the FT8 contact...
It looks as if the distance was in the region of 18,694 kms which is pretty remarkable for the 50 MHz band.
The opening on this occasion was at 21:07 UTC. The previous opening from ZL1 to EA8 on the 7th was between roughly 21:48 to 23:22 UTC.
Besides the distance, there are two things that I find interesting about this contact.
1) Time... For the opening on the 7th of March, it looks as if the path from ZL to EA8 was open before or at the start of the opening from EA8 to South America.
PSK Reporter log for EA8DO |
For the opening on the 9th of March, it was the same. Why is this? Normally openings follow the sun moving from East to West. Why did the main opening from the Canary Islands to South America happen after the more westerly opening to New Zealand?
Will there be more openings like this from EA8 to ZL1 and will they all be at the start of the opening to South America?
2) No opening from ZL1 to South America... In the previous opening on the 7th, I noted how none of the four ZL1 stations in New Zealand heard or were heard by anyone in South America.
On the 9th, the same happened again. Note the map at the top of the post from the PSK Reporter website. There are no FT8 reports from any station in South America despite the fact that the path crosses over the continent.
As I mentioned in the previous post, it's almost like chordal hop with the signal going between different parts of the ionosphere without reaching the ground.
Propagation Mode?... How exactly does a signal from the Canary Islands reach what is effectively the other side of the planet on 50 MHz? Trans-Equatorial Propagation is probably responsible for part of the path from the Canaries to South America but how did the signal get across the Pacific?
Someone suggested that antipodal focusing may be a factor in the opening but it's worth noting that this is 50 MHz, not 14 MHz. It may help but it doesn't explain what happens to make the path or paths possible.
It's good that we have two openings with some similarities but like all good science experiments, we need more openings and more data. Two data points isn't exactly 5-Sigma! 😄
The PSK Reporter log for EA8DO is shown below and you can see that ZL1RS was at the start of the opening.
As part of the RSGB Tonight at 8 video series, Tim GW4VXE gave an interesting presentation on digital voice modes like D-Star, DMR & Fusion. This is really aimed at beginners or anyone who is not familiar with these modes.
The video is shown below. The presentation lasts from about 06:00 to 1:09:30 and there is a Q&A session after it which lasts until 1:43:40.
These are the spots from the DX Cluster for the evening / morning. As you can see, all of the activity seems to have been via digital modes like FT8 on 50.313 MHz...
From Engineers Ireland: Hosted by the Electronic and Computing division in collaboration with the South Dublin Radio Club, this webinar with Adrian Connor and Jeffrey Roe will discuss ‘Amateur Radio - A Life Long Technical Hobby’.
Amateur Radio is a rich and diverse hobby and an exciting mix of science, communications, engineering and fun.
It can be enjoyed by all ages and a wide range of abilities.
This presentation aims to showcase the hobby and how to get started.
Link HERE
Note that the presentation is free and open to anyone.
Sunday 27th February 2022: For the last two weeks, conditions on the 10m band seemed to be pretty mediocre with relatively few good openings to the United States. That changed on the 27th of February with a very good opening to California.
The map above shows the WSPR signals heard on 28.1246 MHz. As well as the northerly path to California, there were signals from the German Antarctic research station DP0DVN and the German Antarctic research ship DP0POL.
It's safe to say that if this map was for FT8 then there would be a LOT more signals. WSPR is a very good beacon mode but there is a lack of stations in many countries.
Beacons... These were the beacons heard in a short space of about 20 minutes.
Halden Field, NR7V is one of the few US radio amateurs who managed to get a special experimental permit to operate on the 40 MHz band and was allocated the callsign WM2XCW back in the second half of 2021.
He has now announced that he has an experimental CW beacon is on the air on the 40 MHz band.
This beacon transmits on 40.6630 MHz which is about 400 Hz below the 200Hz of spectrum used at present for WSPR transmissions.
This will allow people to listen both for the new beacon and to WSPR transmissions at the same time. The same method is used for QRSS transmissions on the HF bands and is very effective.
The beacon will transmit once every 10 minutes, following its WSPR transmissions. It sends identifying information in 18 wpm Morse code and then a carrier for 30 seconds. The beacon location is at Point Roberts in the far north-west of Washington State and the locator square is CN88.
The beacon uses a QRP-Labs U3S with a 10W Linear PA and the antenna is a dipole about 9m above ground level. It is orientated to favour transmission to the NW and SE.
The map above shows the location of the beacon in the NW of the United States. The lobes of the antenna are also shown going NW & SE.
Most of the reception reports are likely to come from the western half of the USA and in the region of 1000-2100 kms and the propagation mode will be Sporadic-E. At the peak of the Sp-E season in late May and all of June, there will be double hop Sp-E openings to the eastern part of the USA in the range of 2600-3500kms.
It will be very difficult to hear the beacon in Europe as it's a northerly path and it's in the null of the dipole.
There is the possibility of some very interesting openings to Japan with multi-hop Sp-E or via Sp-E & TEP to South America. The biggest challenge here is getting someone interested enough to try and listen.
As we head towards the peak of the solar cycle, some F2 openings are likely on the 40 MHz band and it will be interesting to see if the beacon is heard on the east coast of the United States.
Any reception reports should be sent to NR7V or on the DX-Maps website.
In 2017, the Northern Black Forest Group DR9A in Germany won the multi-op section in the IARU Region 1 2m contest. This is held in September every year.
The photo above shows the 144 MHz antenna system. Lower down on the mast, there are 4 high stacks of medium gain 6-element Yagi's pointing in fixed directions every 45 degrees. At top of the mast, there is an array of 4 high gain 17-element Yagi's for when more gain in a particular direction is needed.
These are the top 20 stations in the results...
The DR9A contest station operated from the JN48EQ in the south-west corner of Germany. As you can see from the map below, it is pretty much in the centre of western Europe with stations in all directions.
The short video below gives a flavour of what the contest was like...
I came across an interesting news report recently about an Digital Radio Mondiale (DRM) test that is currently taking place on 86.5 MHz in Copenhagen, the capital of Denmark.
While several countries have DAB systems up and running, some are carrying out test in or around Band 2 (88-108 MHz) and seeing if digital DRM signals could co-exist with analogue FM signals.
The DRM test in Copenhagen started on the 13th of October 2021 and runs until the 1st of August 2022. There is an option of extending this to the 30th of August 2023.
This is a collaborative project organised by Open Channel, an independent Danish network operator in Copenhagen, with Canadian Nautel (transmitter), German RFmondial (DRM modulator & measuring instruments) & Fraunhofer IIS (Content server) and Swedish Progira (network planning).
The project is supported by Gospell, NXP, partners in Denmark and other non-DRM Consortium members like Bauer Media (supplying content) and Kathrein (antenna).
The frequency allocated is 86.5 MHz and with a bandwidth of 200 kHz, which makes room for two DRM signals. Each DRM signal has a capacity of 186.4 kbps (16QAM, CR 5/8) and accommodates three audio channels and multimedia services, so for the 200 kHz a total of six digital radio stations can thus be broadcast. Further down the line there are ambitions to involve the Öresund region (commonly known in English as the Sound, a strait which forms the Danish–Swedish border) and possibly collaborate with another FM station on the Swedish side.
The height of the antenna is 88m and the terrain elevation is 8m (more details below). In phase 1, Open Channel will test single DRM channel with 120 Watt ERP. The coverage probability for mobile reception in Greater Copenhagen is illustrated in the picture below...
The trial on the 86.5 MHz frequency has also been approved by the Swedish Post and Telecom Agency. The fact that the experiment is done a bit below the regular FM band (band II 87.5-108 MHz) is due to the fact that there is no space in this dense region. The new receivers for FM/DRM can handle 64-108 MHz.
“We are working on expanding the FM band in Denmark from 85 – 87.5 MHz, so that the Danish FM band goes from 85 to 108 MHz and thereby create more space to introduce digital radio on the FM band”... says Kenneth Wenzel, project manager and director of Open Channel.
“This DRM field trial offers a unique opportunity to showcase the versatility of DRM-FM by packing two DRM signals within a single FM channel allocation demonstrating optimal spectral efficiency for DRM using a Nautel VS transmitter.”... says Philipp Schmid, CTO at Nautel.
Source... https://www.drm.org/drm-for-fm-in-the-heart-of-europe/
It was announced recently that České Radiokomunikace (CRA) in the Czech Republic has obtained a license from the Czech telecoms regulator (ČTÚ) to conduct a DRM test on 954 kHz in the city of České Budějovice in the south of the country.
The transmitter will have a power of just over 3kW which means it may be heard across Europe at night. The 954 kHz is one of the medium wave frequencies where the (AM) programs ČRo Dvojka and ČRo Plus were broadcast until the end of 2021.
CRA wants to use the test, among other things, to determine the scope and energy efficiency of broadcasting in the DRM standard. Both the 16 QAM and 64 QAM, the two common modulation schemes in DRM, will be tested. The operator will use an existing Transradio medium wave transmitter into which they will integrate a digital modulator.
The DRM system has long been touted as the digital replacement for AM on the Medium Wave and Short Wave bands. In 2003 and 2006, the Czech public broadcaster ČRo conducted a series of DRM tests on medium and short wave so these new tests should be seen in that light.
DRM has gained a foothold in countries like India but the take up has been slow elsewhere in the world.