Skewed path opening on the 40 MHz band from New Zealand to England & Ireland - 13th March 2023

Monday 13th March 2023: Over the last few weeks, Paul G9PUV in the SE of England and Robbie, EI2IP in the SW of Ireland have been very active on the 40 MHz (8m) band. On the evening of the 13th of March, there was a remarkable opening when their FT8 signals were heard in New Zealand.

The map above shows the direct paths in Purple. The path from EI2IP goes over the Arctic to the west while the path from G9PUV goes east and over the far north of Russia, both highly unlikely paths at a frequency of 40 MHz.

The strange thing is that 40 MHz didn't seem to take the short path or the long path but a skewed path. A suggested path is shown above in Orange but in reality, we'll never know for sure the exact path.

Here are the reception reports from ZL1RS in New Zealand...

 Txmtr Band Mode Distance Time (UTC) SNR
WM2XEJ 8m FT8 13129 km 19:47:26 7
EI2IP 8m FT8 18096 km 19:35:14 -21
G9PUV 8m FT8 18206 km 18:54:14 -17

Note that ZL1RS was hearing the the experimental US station WM2XEJ as well at about the same time.

G9PUV: The map above shows the FT8 paths for Paul, G9PUV in the evening time. Note that there was a path also open to the Caribbean about 20 mins after the opening to New Zealand. 

These are the FT8 reports...

Txmtr Rcvr Band Mode Distance Time (UTC) SNR
G9PUV EA8/DF4UE 8m FT8 2730 km 19:18:00 -13
G9PUV EA1TX 8m FT8 1086 km 19:15:41 -15
G9PUV FG8OJ 8m FT8 6618 km 19:14:14 -11
G9PUV HC02 8m FT8 1657 km 19:14:14 -17
G9PUV HI0SDR/3 8m FT8 6983 km 19:14:00 -17
EA1TX G9PUV 8m FT8 1086 km 19:13:59 -14
G9PUV K6EU 8m FT8 8704 km 19:00:14 -21
G9PUV ZL1RS 8m FT8 18206 km 18:54:14 -17

G9PUV was using a log-periodic antenna at rooftop level and was beaming 195 degrees. The actual beam heading for New Zealand may have been some bit off this.

EI2IP: The map above shows the paths for EI2IP during the evening. Again, note that there was an opening to the Caribbean and the south-east of the USA.

Rcvr Band Mode Distance Time (UTC) SNR
FG8OJ 8m FT8 6092 km 19:52:44 -12
WW1L 8m FT8 4389 km 19:52:14 -2
K6EU 8m FT8 8152 km 19:52:12 -11
WM2XCC/JTDX 8m FT8 8244 km 19:49:58 -19
K1HTV-4 8m FT8 5390 km 19:40:45 -17
WM2XCC 8m FT8 8244 km 19:40:44 -20
PJ4MM 8m FT8 6895 km 19:39:11 -15
EA8/DF4UE 8m FT8 2676 km 19:37:00 -10
EA1TX 8m FT8 1223 km 19:36:11 -11
ZL1RS 8m FT8 18096 km 19:35:14 -21
HC02 8m FT8 1705 km 19:32:15 -11
N4WLO/3 8m FT8 6684 km 19:32:14 -17
HI0SDR/3 8m FT8 6405 km 19:32:00 -12
K5YT 8m FT8 6935 km 19:19:41 -24
HI0SDR 8m FT8 6461 km 19:06:30 -19
WM2XEJ 8m FT8 6135 km 19:06:14 -22
WP4G 8m FT8 6209 km 19:05:42 -17
N2OTO 8m FT8 6487 km 19:05:30 -8

EI2IP reports using a 4-element Yagi and was beaming at 200 degrees which is roughly pointing at South America.

WM2XEJ: It's interesting to look at the evening reports and paths for the US experimental station WM2XEJ in Georgia. You'll note that there was a path open both to ZL1RS at 19:47 UTC and to EI2IP at 19:35 UTC.

As you can see from the map above, it's not hard to imagine a situation where the path becomes skewed and then the EI to ZL path becomes possible. In that case, it's likely that the path was in the region of about 19,000kms.

Short Path or Long Path??? ...  Strictly speaking, it was probably a skewed short path for EI2IP and a skewed long path for G9PUV.  The more correct question is probably if the path was skewed or not? The more informative answer is that the path was skewed and learn from that.

Lessons: It's worth remembering that the TEP zone around the Geomagnetic Equator is likely to have a huge impact on any 40 MHz signals crossing it. I would take these points from this...

1) The date... We're in the middle of March and near the equinox.

2) The time... Roughly 18:45 to 20:00 UTC

3) Location... This applies to stations in the north of New Zealand and the NW of Europe.

4) Beam heading... Stations in New Zealand should beam at the Caribbean and stations in the UK and Ireland should beam at the South America or the Caribbean.

5) Skewed Paths.... Forget long path and short paths and direct lines on the map which can go all over the place when the other station is at the other side of the planet. 40 MHz signals are going to have a really tough time crossing over the north or south poles... look for skewed paths where the signal stays as close to the equator as possible.

6) 50 MHz... Any serious 50 MHz operators should be reading this and then trying to explore this path. If it can be done at 40 MHz then maybe 50 MHz is possible?

In conclusion: The Trans-Equatorial Propagation zone around the geomagnetic equator has a huge impact on low band VHF signals on the 40 MHz and 50 MHz bands. In the past, we only really had SSB and CW available in terms of popular modes. Now with so many stations on the one frequency using a weak signal mode like FT8, we can see signals that are buried in the noise. 

There are probably plenty of other skewed paths that are possible. The key is to get out of the fixed mindset of short path and long path and think about beaming at this TEP zone at an angle and see if a signal can propagate inside it or be bent by it.

It's likely the windows of opportunity will be short... the TEP zone ionization needs to be right and there may be sunrise or sunset peaks along the path.

It's likely that there are probably plenty more new skewed paths out there awaiting discovery.

Link... For more information on the 8m band, see my 40 MHz page.

14,588km opening on the 40 MHz band from Quebec to New Zealand - 12th Feb 2023

Sunday 12th February 2023: In recent posts, I've reported on how Bob, ZL1RS in New Zealand had heard 3 of the 7 special experimental stations in the USA on the 40 MHz (8m) band as well as PJ4MM on the island of Bonaire in the Caribbean. Reports linked from the 40 MHz page.

On the 12th of February, ZL1RS managed to decode the WSPR and FT8 signals from Bernard, VA2CY in Quebec, Canada on 40.680 MHz, a distance of 14,588 kms. Bernard was granted the experimental license CYA373 by the Canadian authorities to carry out tests on the 40 MHz band.

These are the WSPR reports...

 Local   (y-m-d) TX txGrid RX rxGrid MHz W SNR drift km
2023-02-12 21:04 VA2CY FN46lw ZL1RS RF64vs 40.681457 100 13 -4 14588
2023-02-12 20:52 VA2CY FN46lw ZL1RS RF64vs 40.681454 100 17 -4 14588
2023-02-12 20:44 VA2CY FN46lw ZL1RS RF64vs 40.681454 100 16 -3 14588
2023-02-12 20:28 VA2CY FN46lw ZL1RS RF64vs 40.681469 100 -3 -1 14588

Note the signal reports that range from -3dB to a whopping +17dB, well into the region where a comfortable SSB contact would have been possible.

When I was preparing this post, I noticed that the path was also open on the 13th of February.

2023-02-13 20:24 VA2CY FN46lw ZL1RS RF64vs 40.681467 100 -16 -4 14588

Bob also reports that he also heard several US signals as well as VA2CY on FT8 as well.

Bob, ZL1RS writes... "Some thumping signals received on 8m from VA2CY in Quebec this morning ... +17 in WSPR and +15 in FT8 !

Here are today's decodes (12th Feb) from my WSJT-X  ALL_WSPR . txt and ALL . txt files ...

13,318km opening on the 40 MHz band from the Caribbean to New Zealand - 10th Feb 2023

10th Feb 2023: This was another good day on the 40 MHz (8m) band as shown from the map above showing the FT8 paths from Martin, PJ4MM on the island of Bonaire in the Caribbean.

The 8m signal from PJ4MM went well into Europe and reached as far as Poland and Greece. The one path that caught my attention was the opening across the Pacific to New Zealand. I believe this is the first time a 40 MHz signal from the Caribbean has been heard in New Zealand.

These are the FT8 reports for PJ4MM in order of distance.

 Txmtr Rcvr Band Mode Distance Time (UTC)
PJ4MM ZL1RS 8m FT8 13318 km 22:51:41
PJ4MM SV8CS 8m FT8 9094 km 15:43:44
PJ4MM SR4DON 8m FT8 8830 km 14:26:30
PJ4MM SP9TTG 8m FT8 8755 km 14:35:11
PJ4MM 9H1TX 8m FT8 8563 km 15:39:44
PJ4MM DG0OPK 8m FT8 8173 km 14:51:12
PJ4MM DK8NE 8m FT8 8136 km 14:50:14
PJ4MM G9PUV 8m FT8 7438 km 14:52:44
PJ4MM EI4GNB 8m FT8 7083 km 14:28:14
WM2XCC PJ4MM 8m FT8 5485 km 19:00:56
PJ4MM CE3SX 8m FT8 5080 km 20:24:43
PJ4MM WB0DBQ 8m FT8 4453 km 18:04:41
PJ4MM VO1SIX 8m FT8 4072 km 15:05:41
PJ4MM VE2BI 8m FT8 4025 km 15:59:11
PJ4MM XE2OR 8m FT8 3826 km 18:04:44
PJ4MM WW1L 8m FT8 3595 km 15:08:44
PJ4MM K5YT 8m FT8 3557 km 18:01:44
PJ4MM K2ZD 8m FT8 3348 km 14:51:11
PJ4MM N4WLO/3 8m FT8 2901 km 20:52:11
PJ4MM PJ4GR 8m FT8 10 km 22:43:41

Bob, ZL1RS mentions that his 8m Yagi is permanently fixed at about 70 degrees.  With just 3 elements, the -3dB beam width is about 70 degrees (+/-35 deg).  So it covers 040 to 110 degrees quite well. PJ4MM is at 96 degrees.

Just for reference, the solar flux on the 10th of February was back over 200.

Bob confirms that there many decodes of PJ4MM on the day and he has kindly sent on a list of decodes to me. I have them listed below for reference.

Even more Trans-Pacific openings on the 40 MHz band - 6th to 9th Feb 2023

In previous posts, I reported on some impressive 40 MHz openings across the Pacific Ocean. On the 28th of December 2022, there was a 12,000km+ opening on the 40 MHz band from California to Australia. On the 25th of January 2023, there was a 10,470km opening on the 40 MHz band from California to New Zealand.

The common element in both posts was that the station in California was WM2XCC, the experimental 40 MHz station which is operated by Chris, N3IZN. Now we have reports of two other experimental stations being heard across the Pacific.

WM2XEJ: The first report is of Bob, ZL1RS in New Zealand receiving the WSPR signal from WM2XEJ in Georgia in the USA. This is interesting not only because of the 13,129km distance but WM2XEJ is a lot further east than the previous reception reports of WM2XCC in California.

These are the WSPR reports...

Local   (y-m-d) TX txGrid RX rxGrid MHz W SNR drift km
2023-02-08 23:34 WM2XEJ EM83ji ZL1RS RF64vs 40.68156 100 -18 0 13129
2023-02-08 23:40 WM2XEJ EM83ji ZL1RS RF64vs 40.681561 100 -1 0 13129
2023-02-08 23:46 WM2XEJ EM83ji ZL1RS RF64vs 40.681558 100 1 -1 13129
2023-02-08 23:54 WM2XEJ EM83ji ZL1RS RF64vs 40.68156 100 -1 0 13129
2023-02-09 00:08 WM2XEJ EM83ji ZL1RS RF64vs 40.681558 100 -9 0 13129
2023-02-09 00:14 WM2XEJ EM83ji ZL1RS RF64vs 40.681558 100 -17 0 13129

As you can see, the signal comes out of the noise and peaks at +1dB which is strong enough for say a good CW contact. After that, it fades away again. The opening possibly coincided with a sunset in Georgia. or a sunrise in New Zealand?

The other stations shown on the map above are from the last week and show plenty of F2 propagation on the 40 MHz (8m) band.

WM2XCW: The WM2XCW experimental 40 MHz station is located in the far north of Washington state and has now been received in New Zealand. This is significant because WM2XCW is the most northerly of the US experimental stations on the 40 MHz band.

ZL1RS... Again, most of the reports are from Bob, ZL1RS on the 6th and 8th of February 2023...

Local   (y-m-d) TX txGrid RX rxGrid MHz W SNR drift km
2023-02-06 21:48 WM2XCW CN88lx ZL1RS RF64vs 40.681533 10 3 0 11246
2023-02-06 21:58 WM2XCW CN88lx ZL1RS RF64vs 40.681533 10 -4 0 11246
2023-02-06 22:48 WM2XCW CN88lx ZL1RS RF64vs 40.681532 10 -7 0 11246
2023-02-06 22:38 WM2XCW CN88lx ZL1RS RF64vs 40.681534 10 -7 0 11246
2023-02-08 22:48 WM2XCW CN88lx ZL1RS RF64vs 40.681535 10 -10 0 11246
2023-02-08 22:58 WM2XCW CN88lx ZL1RS RF64vs 40.681535 10 -12 0 11246
2023-02-08 22:38 WM2XCW CN88lx ZL1RS RF64vs 40.681534 10 -12 0 11246
2023-02-08 22:18 WM2XCW CN88lx ZL1RS RF64vs 40.681532 10 -12 -1 11246

Note that while WM2XEJ in Georgia is listed as 100-watts, WM2XCW in Washington state is using a much lower 10-watts. The strong signal peaked at +3dB suggesting a weak SSB contact may have been possible.

ZL1RQ... There are several reports from Alan, ZL1RQ for WM2XCW but they are listed as being on 28 MHz. As WM2XCW only transmits on 40 MHz, it seems likely that ZL1RQ is listening on 40 MHz but his older version of WSJT-X software isn't configured for 40 MHz reports.

Local   (y-m-d) TX txGrid RX rxGrid MHz W SNR drift km version
2023-02-07 21:18 WM2XCW CN88lx ZL1RQ RF64 28.12616 10 -26 0 11318 2.5.2
2023-02-07 21:08 WM2XCW CN88lx ZL1RQ RF64 28.12616 10 -23 0 11318 2.5.2
2023-02-06 22:48 WM2XCW CN88lx ZL1RQ RF64 28.126157 10 -16 1 11318 2.5.2

There is also one report from ZLBEACON with the same frequency, short locater square and software version as ZL1RQ so I presume these were from Alan as well.

Local   (y-m-d) TX txGrid RX rxGrid MHz W SNR drift km version
2023-02-08 21:08 WM2XCW CN88lx ZLBEACON RF64 28.12616 10 -28 0 11318 2.5.2

WM2XCC: Unsurprisingly, most of the trans-Pacific 8m reception reports are for WM2XCC in California. Note that WM2XCC is using different power levels at different times.

VK4OTZ: There is one single report from VK4OTZ on the east coast of Australia on the 7th of February 2023.

Local   (y-m-d) TX txGrid RX rxGrid MHz W SNR drift km 
2023-02-07 23:38 WM2XCC DM13ji VK4OTZ QG62jo 40.681528 50 -24 1 11637 

ZL1RQ: There are several reports of WM2XCC from ZL1RQ but again, the frequency shown is 28 MHz rather than the correct 40 MHz one.

Local   (y-m-d) TX txGrid RX rxGrid MHz W SNR drift km version
2023-02-08 00:00 WM2XCC DM13ji ZL1RQ RF64 28.126111 50 -25 0 10550 2.5.2
2023-02-07 23:56 WM2XCC DM13ji ZL1RQ RF64 28.126111 50 -23 0 10550 2.5.2
2023-02-07 23:46 WM2XCC DM13ji ZL1RQ RF64 28.126111 50 -11 0 10550 2.5.2
2023-02-07 23:42 WM2XCC DM13ji ZL1RQ RF64 28.126112 50 -16 0 10550 2.5.2
2023-02-07 23:38 WM2XCC DM13ji ZL1RQ RF64 28.126113 50 -12 0 10550 2.5.2
2023-02-07 22:56 WM2XCC DM13ji ZL1RQ RF64 28.126113 2 -28 0 10550 2.5.2
2023-02-07 22:38 WM2XCC DM13ji ZL1RQ RF64 28.126113 2 -21 0 10550 2.5.2
2023-02-07 22:18 WM2XCC DM13ji ZL1RQ RF64 28.126113 2 -23 0 10550 2.5.2
2023-02-07 21:56 WM2XCC DM13ji ZL1RQ RF64 28.126113 2 -20 0 10550 2.5.2

ZL1RS: Bob has by far the most reception reports and these are shown below.

Long path opening on the 50 MHz band between Germany and New Zealand - 28th Jan 2023

In a previous post, I reported on how there was a short path opening on the 50 MHz band between Germany and New Zealand on the 25th of January 2023. What's better than a short path opening? A long path opening of course!

On the 28th of January 2023, there was an amazing long path opening between Europe and New Zealand on the 50 MHz band. More specifically, DK1MAX in Germany managed to complete a FT8 contact with ZL1SG in New Zealand.

DX-Cluster spots...
Spotter Freq. DX Time Info Country
ZL1RS 50323.0 DK1MAX 20:18 28 Jan RF64<>JN58 long path Fed. Rep. of Germany
ZL1SG-@ 50323.0 DK1MAX 20:10 28 Jan FT8 -9 Tnx Max great qso Fed. Rep. of Germany

On the PSK Reporter website, I found three European and two New Zealand stations that were involved in this long path opening. I have put in the approximate long path distances and I have recorded the signal reports that appeared on the site as well.

Txmtr Rcvr Band Mode Distance Time (UTC) Approx Signals
IV3KKW ZL1SG 6m FT8 ~22,000 km 20:23:11 -18dB
DK1MAX ZL1SG 6m FT8 ~22,100 km 20:20:41 -19dB
OE5OLL ZL1SG 6m FT8 ~22,200 km 19:40:41 -15dB

Txmtr Rcvr Band Mode Distance Time (UTC)
IV3KKW ZL1RS 6m FT8 22,000 km 20:27:13 -16dB
DK1MAX ZL1RS 6m FT8 22,100 km 20:03:43 -13dB

Analysis... Let's have a look at what happened. First of all the location of the stations which is important.

ZL1LG and ZL1RS have the same locator square and are located at the far north of New Zealand.

The three European stations are in roughly the same geographic location and are only about 200-300kms apart.

Opening... At the time of the long path opening, there was a path on 50 MHz between ZL1SG and South America.

At the same time, there was an opening from DK1MAX to South America.

It looks as if the two openings coupled into each other and allowed a long path at 50 MHz opening between the far north of New Zealand and a small area in Europe.

I need to stress that the location of the stations had a huge bearing on the opening. Because New Zealand is effectively on the other side of the planet from Europe, the beam heading changes drastically with a small change in location.

The geometry of the path from say the north of Germany is very different than the south of Germany. From the UK, the long path to New Zealand goes almost directly south and over the Antarctic which makes a 50 MHz path highly unlikely.

By contrast, stations to the south of DK1MAX have the possibility of long paths that are closer to the equator and more likely.

Mode of Propagation... The solar flux on the day was in the region of 150-160 but this was after coming down off a peak of around 230 about a week earlier. The path was almost certainly F2 with possibly some chordal hop involved. There may have been some TEP from Europe to South America.

In conclusion... The signals were weak for this long path opening as they were down around -13 to -19dB. If it wasn't for FT8, the opening would have gone unnoticed. It was an amazing opening and there are no doubt plenty more to come. 

Link...
1) I have put links to posts about previous long distance 6m openings up on my 50 MHz page.

Addendum: Max, DK1MAX reports... "That's a screenshot from and after the QSO with ZL1RS. We worked on 50323 as 313 was way too busy with strong EU transmitting 2nd period. Still very much excited. Thanks for the summary in the EI7GL blogspot."

Javier, LU5FF in Argentina reports paths on 50 MHz to the following stations in New Zealand...

Pipe, CE3SAD reports that during the same opening, CE6TK in Chile worked 16 ZL stations in New Zealand. In the CE3 zone of Chile, there was only one.

CE3SAD also recounts a previous long path opening way back on the 21st of April 2001. Operating as CE3SAD/2 from FF48 locator square, he managed to complete some long path contacts with VK4 stations in Australia while beaming towards Europe. The stations were located in the QH30 and QG39 locator squares and the long path distance was in the region of 27,000kms.

CE3SAD did try beaming the more direct short path to Australia but the stations disappeared. It's worth remembering that back in 2001, the dominant modes were SSB and CW and the signals had to be above or at the noise level. It's a huge difference from now when FT8 allows contacts to be made from signals that are buried in the noise.

10,470km opening on the 40 MHz band from California to New Zealand - 25th Jan 2023

It's always nice to see 8m reception reports from different parts of the globe and this time we have a reception report of the 40 MHz WSPR signal of WM2XCC in California by ZL1RS in New Zealand.

WM2XCC is one of the experimental licences for the 40 MHz band and is operated by Chris, N3IZN. The 2-watt WSPR signal of WM2XCC on 40.680 MHz was decoded four times by Bob, ZL1RS in New Zealand during a three and a half hour period on the 25th and 26th of January 2023.

The four reports are below, note that the times are in UTC.

Local   (y-m-d) TX txGrid RX rxGrid MHz W SNR drift km

2023-01-26 01:18 WM2XCC DM13ji ZL1RS RF64vs 40.681486 2 -29 0 10471
2023-01-26 01:00 WM2XCC DM13ji ZL1RS RF64vs 40.681486 2 -16 0 10471
2023-01-25 22:20 WM2XCC DM13ji ZL1RS RF64vs 40.681488 2 -23 0 10471
2023-01-25 21:58 WM2XCC DM13ji ZL1RS RF64vs 40.681488 2 -16 0 10471

The signals range from -16dB to -29dB which means that they were probably inaudible to the ear and were buried in the noise. The signals were still present though which means the trans-Pacific path existed.

The distance was around 10,470kms and the most likely mode of propagation was via the F2 layer in the ionosphere. At midnight UTC, the sun would have been somewhere over the centre of the Pacific and roughly half way between California and New Zealand.

Back on the 28th of December 2022, there was a similar opening from California to Australia. Link HERE

ZL1RS... For the reception report, Bob ZL1RS reports using an ICOM IC-7610 with a 3-element Yagi for the 40 MHz band at 8-metres above ground level. The antenna is fixed pointing at North America and the 4 WSPR decodes were from the second day after it was put up.

Bob notes that New Zealand regulations permit anyone to freely transmit on 40.680 MHz with 1-watt ERP as long as they don't cause interference to any paid licence system.

Side Note... When I was writing this latest trans-Pacific 8m report, I had completely forgotten about the reception report of WM2XCC in Australia at the end of December. I wrote that blog post and I had forgotten about it after a month! It just shows to me the value of generating a blog post about an unusual 8m opening and then linking to it from the 40 MHz page on the blog.

WSPR reports disappear after 5-weeks and FT8 reports disappear off the PSK Reporter website after 24 hours. How many unusual openings on the various VHF & UHF bands go unreported and unnoticed?

Addendum: Bob, ZL1RS reports... "Another opening 26/27 Jan utc:

Timestamp Call MHz SNR Drift Grid Pwr Reporter RGrid km az Mode
 2023-01-27 00:46 WM2XCC 40.681486 -23 0 DM13ji 50 ZL1RS RF64vs 10471 230 W-2 
 2023-01-26 23:14 WM2XCC 40.681487 -25 0 DM13ji 2 ZL1RS RF64vs 10471 230 W-2 
 2023-01-26 22:18 WM2XCC 40.681489 -15 0 DM13ji 2 ZL1RS RF64vs 10471 230 W-2 
 2023-01-26 21:44 WM2XCC 40.681488 -19 0 DM13ji 2 ZL1RS RF64vs 10471 230 W-2 
 2023-01-26 21:26 WM2XCC 40.681488 -16 0 DM13ji 2 ZL1RS RF64vs 10471 230 W-2 
 2023-01-26 21:04 WM2XCC 40.681488 -9 0 DM13ji 2 ZL1RS RF64vs 10471 230 W-2 

There would have been more except that reception here was obliterated by severe rain static for about an hour.  During that time there were 3 other partial WSPR traces (which did not decode due to the rain static), but from the timing and frequency offset, we believe it was WM2XCW (aka NR7V)."

18,700km contact on 50 MHz between ZL1RS and EA8DO - 9th March 2022

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.

18,000km+ opening on 50 MHz between New Zealand & the Canary Islands - 7th March 2022

Monday 7th March 2022: There was an extremely long distance opening on the 50 MHz band between the north island of New Zealand (ZL1) and the Canary Islands (EA8) and in most cases, the distances were well in excess of 18,000kms.

If you consider that the circumference of the Earth is 40,000kms then this opening was close to the border line of what is short path or long path. See EA7 below.

Looking at the reports on the PSK Reporter website, the opening from ZL1 to EA8 occurred around 22:30 UTC. What's interesting is the EA8 stations had what looks like a TEP opening to South America about an hour later but it didn't seem to coincide with the ZL1 opening.

Questions... Like many openings, this one raises more questions than it answers.

1) Was part of the path due to TEP (Trans-Equatorial Propagation)? If it coincided with the opening to South America then yes but it seems to have been before it.

2) The map above for ZL1RS in New Zealand shows the shortest paths to the stations in the log on the PSK Reporter website. Was the path to EA8 direct or slightly skewed? Was the real path not actually over South America?

3) I checked the reports for the ZL1 stations and none of them show a South American station and yet, the opening was supposed to have gone over the continent of South America. There seems to have been an opening later from the south of New Zealand (ZL3) to Central America and Mexico. Was the real EA8-ZL1 path skewed and further north?

4) Propagation mode?... I would think that a large part of the path was due to chordal mode without the signal hitting the ground.

Did the signal pass over South America by chordal hop without reaching the ground?

5) How did the signal get across the Pacific which is a feat in itself?

6) How much of the path was due to F2? Sp-E? TEP?

Answers... If we were at the peak of the solar cycle then it may not be a big deal. But we're not, we're just on the way out of solar minimum, the solar flux is just 118 and this is up at 50 MHz. 

I think at best, we can make educated guesses but I think that's all we can do. Whatever the reason for the opening, it's probably no accident that this opening occurred near the equinox and it's likely to happen again.

Reports...These are some of the reports from the PSK Reporter website...

ZL1RS...

Txmtr Rcvr Band Mode Distance Time (UTC)
ZL1RS EA8/DF4UE 6m FT8 18986 km 22:23:29
ZL1RS EA8AXT 6m FT8 18828 km 22:19:29
ZL1RS EA8RH 6m FT8 18745 km 22:35:56
ZL1RS EA8TL 6m FT8 18742 km 22:34:56
ZL1RS EA8TH 6m FT8 18694 km 23:19:26

ZL1SG...
Txmtr Rcvr Band Mode Distance Time (UTC)
ZL1SG EA8/DF4UE 6m FT8 19019 km 22:06:56
EA8AQV ZL1SG 6m FT8 18929 km 21:48:11
ZL1SG EA8AXT 6m FT8 18861 km 22:00:59
EA8AXT ZL1SG 6m FT8 18861 km 21:49:41
ZL1SG EA8RH 6m FT8 18777 km 22:33:56
EA8RH ZL1SG 6m FT8 18777 km 22:31:41
ZL1SG EA8TL 6m FT8 18774 km 22:34:59
EA8TL ZL1SG 6m FT8 18774 km 22:31:41
EA8TH ZL1SG 6m FT8 18725 km 23:17:41

ZL1RQ... Note CN9YZ in Morocco & YS1AG in El Salvador...
Txmtr Rcvr Band Mode Distance Time (UTC)
ZL1RQ CN8YZ 6m FT8 19768 km 20:52:26
ZL1RQ EA8/DF4UE 6m FT8 19019 km 22:10:56
ZL1RQ EA8AXT 6m FT8 18861 km 21:36:29
EA8RH ZL1RQ 6m FT8 18777 km 22:30:41
ZL1RQ EA8RH 6m FT8 18777 km 22:11:29
ZL1RQ EA8TL 6m FT8 18774 km 22:29:29
EA8TL ZL1RQ 6m FT8 18774 km 22:17:41
EA8TH ZL1RQ 6m FT8 18725 km 23:22:41
YS1AG ZL1RQ 6m FT8 11511 km 01:31:41

ZL1AKW...
Rcvr Band Mode Distance Time (UTC)
EA8TH 6m FT8 18318 km 23:17:26

EA5GJ reports the following... "ZL1RS receives 3 decodes from EA7HCL on 50 MHz for the long step in an intense opening this afternoon with South America, we are facing the first Pacific-Europe Long Path openings on 6 meters, in many years... #50MHz #Propagation". 

Note that none of these appeared on the PSK Reporter site.

EA7HCL is in the far south of Spain and this opening for him was actually long path. For the EA8 stations, it was short path.

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...

Spotter Freq. DX Time Info Country
ZL3OZ 50313.0 YS1AG 00:36 08 Mar wkng PY. -18 El Salvador
ZL3OZ 50313.0 XE1HG 00:20 08 Mar part QSO tnx. Mexico
XE1MEX 50313.0 ZL3OY 00:04 08 Mar Tnx QSO New Zealand
XE1MEX 50313.0 ZL3OZ 00:00 08 Mar Tnx QSO New Zealand
ZL3OZ 50313.0 XE1MEX 23:30 07 Mar CQ at -6 through -19 Mexico
EA8TH 50313.0 ZL1RS 23:23 07 Mar FB Signal. TU Bob New Zealand
ZL1RS 50313.0 EA8TH 23:23 07 Mar tnx qso Canary Islands
EA8RH 50313.0 ZL1RS 22:17 07 Mar tnx qso new one New Zealand
ZL1RS 50313.0 EA8RH 22:09 07 Mar tnx qso Canary Islands
ZL1RS 50313.0 EA8TL21:48 07 Mar tnx qso Canary Islands
EA8TL 50313.0 ZL1RS 21:45 07 Mar calling you ft8 New Zealand
ZL1RS 50313.0 EA8AQV 21:32 07 Mar tnx QSO Canary Islands
ZL1RS 50313.0 EA8/DF4UE 21:26 07 Mar Canary Islands
ZL1RS 50313.0 CN8YZ 21:01 07 Mar rx only, calling ZL1RQ Morocco
ZL1RS 50313.0 EA7HCL 20:18 07 Mar 3 decodes ... Spain

Trans-Pacific 50 MHz opening between New Zealand and South America - 14th Dec 2021

14th December 2021: It's interesting to see that long distance paths across the Pacific on the 50 MHz band are now beginning to get better in the southern hemisphere.

The map above shows some of the 6m signals heard by ZL1RS in New Zealand with paths to South America ranging from 9,836 kms to 12,595 kms.

 Txmtr Band Mode Distance Time (UTC)
PY4AQA 6m Q65 12595 km 22:30:30
PY2XB 6m Q65 12202 km 22:49:29
PU2MBY 6m Q65 12059 km 23:13:27
PY5EW 6m Q65 11967 km 23:33:27
PY5KD 6m Q65 11893 km 23:13:27
PT9FD 6m Q65 11825 km 23:08:29
LU5FF 6m Q65 10736 km 22:52:29
CE3VRT 6m Q65 9836 km 23:20:32

Note the mode... Q65! FT8 isn't the only weak signal mode.

The times are in UTC so in reality, this opening was during the daytime with the sun over the Pacific.

Propagation Mode??... As it's December, the Summer Sporadic-E season in the southern hemisphere has started and is likely to get better. 

If we assume the average Sporadic-E hop to be say 2000kms, did 5 or 6 of these hops line up for the 50 MHz signal to get from South America to New Zealand?

I'd be pretty certain that Sporadic-E was involved to some extent but I don't think anyone can say for certain it was 100% responsible. Was part of it chordal hop? Was the mesosphere region associated with noctilucent clouds involved?

As the openings get better, it'll be interesting to see the signals extend as far as Australia and what paths open up then.

Update from Bob, ZL1RS: Bob mentions that there have been several openings from ZL1 (North Island of New Zealand) to South America on 6m in the last few weeks.

25th Nov 2021 - CE (Chile) and PY (Brazil)

26th Nov 2021 - CE and LU (Argentina)

01st Dec 2021 - LU (RX only)

02nd Dec 2021 - CE

10th Dec 2021 - CE

14th Dec 2021 - as noted above

Bob adds... "... and on another date that I did not note, with propagation from ZL3 to SA.

... and signals from SA have been reported as received in VK3 and VK5 (while the operators were out of the shack). Having said that, the opening on 14 Dec was the most sustained so far this season ... signals in and out from 21:15 UTC until 23:15 UTC."

16,000km+ opening on 50 MHz from Australia & New Zealand to Europe - 17th June 2021

Thursday 17th June 2021: Another day, another opening on 50 MHz between Australia and Europe. This one however was different as several stations from the Adelaide area (VK5) in the south of Australia were involved.

It also seems as if a small number of stations in New Zealand and the Australian states of Victoria & Western Australia managed to work Europe as well. Info further down post.

All the areas of Australia are not the same in terms of propagation, Stations on the north coast have a pipeline into Japan & China via TEP (Trans-Equatorial Propagation) whereas stations in the south of the continent are a bit too far south.

That's why openings on 50 MHz between the south of Australia and Europe are always of interest. It raises the very real question of just how exactly does a signal at 50 MHz travel so far near the bottom of the sunspot cycle.

The maps and station list below are derived from FT8 reports on the PSK Reporter website and it may well not include everyone. I couldn't find any information on SSB or CW contacts being made but that doesn't mean they weren't.