The number of EI stations registering for Digital Mobile Radio numbers continues to grow with an average of 12 per quarter so far in 2018. The chart below shows that 136 DMR numbers had been allocated as of the end of September 2018.
Out of those 136 numbers, 5 were clubs and 12 EI calls had two numbers so the total number is something like 119 individuals.
Looking at the island of Ireland overall, it is perhaps a little suprising to see how many DMR numbers are allocated in Northern Ireland by comparison.
The 410 from Northern Ireland can be broken down as follows...
GI* = 138
MI* = 213
2I* = 59
Buried in those figures are full, novice and foundation licences. Some may have two numbers and some may have upgraded from a foundation to a novice call in the last three years. If we use the EI numbers as a guide then that 410 in the north could actually mean something like 350 individuals.
That gives a ball park figure of about 470 individuals with DMR numbers on the island of Ireland.
The big difference in numbers between Northern Ireland the the Republic may possibly be accounted for by the following reasons...
1) One year ahead... Digital Radio and DMR started in Northern Ireland about a year ahead of the rest of the island. The big surge in numbers in EI in the first two months of 2017 mirror a similar surge in GI a year earlier.
2) Licence for beginners... It's a lot easier to get a licence in the north of Ireland with the option of a foundation and novice licence. In the Republic, the only option is to sit a test and get the full licence.
Links...
1) http://ham-digital.org/dmr-userreg.php
Showing posts with label 2018. Show all posts
Showing posts with label 2018. Show all posts
Monday, October 1, 2018
Wednesday, September 26, 2018
G3SMT works Cape Verde Islands to set new 144 MHz Tropo record
Back on the 5th of August 2018, Mark Turner EI3KD worked D4Z in the Cape Verde Islands off the coast of Africa to set a new IARU Region 1 tropo record on 144 MHz. Now less than two months later, that record has been broken again.
On Tuesday the 25th of September 2018, the marine duct from the Cape Verde Islands expended as far north as the British and Irish Isles again.
At 21:10, EI3KD managed to repeat his record distance by working D4Z on cw for a second time, a distance of 4163 kms.
At approx 21:46, GW0KZG in IO71LW in the west of Wales worked D4Z to extend the record to approx 4270 kms. It turned out to be one of the shortest held records however,
At approx 21:47, Peter Torrry G3SMT worked D4Z (HK76MU) to set a new IARU 144 MHz Region 1 record of 4431 kms. Peter's locator square is IO82KV.
DX-Cluster spots - 25th Sept 2018...
GW0KZG 144300.0 D4Z 22:12 25 Sep IO71LW HK76MU still 519 cal Cape Verde
G3SMT 144300.0 D4Z 21:46 25 Sep IO82KV HK76MU Cape Verde
GW0KZG 144300.0 D4Z 21:45 25 Sep IO71LW HK76MU 539 tks QSO Cape Verde
G7RAU 144300.0 D4Z 21:42 25 Sep IN79JX HK76MU 599+ cq, gl Cape Verde
G7RAU 144300.0 D4Z 21:18 25 Sep IN79JX HK76MU 559! wow! Cape Verde
EI3KD 144300.0 D4Z 21:11 25 Sep IO51VW HK76MU tnx! 589 cq Cape Verde
D41CV was also worked on FT8...
M0BUL-@ 144174.0 D41CV 22:28 25 Sep tnx Cape Verde
GW0KZG 144174.0 D41CV 22:27 25 Sep IO71LWHK76TC H-10,/-04 Tn Cape Verde
EI3KD 144174.0 D41CV 22:22 25 Sep IO51VW HK76MU oops call :) Cape Verde
G7RAU 144174.0 D41CV 22:19 25 Sep IN79JX HK76MU +03 FT8 GL! Cape Verde
This is the tropo prediction map for the path at the time...
It's probably likely that the record will be extended again at some stage in the future with perhaps a contact to Northern Ireland or Scotland.
Just to illustrate just how far the G3SMT - D44Z contact was, this is the equivalent distance across the Atlantic from the south-west coast of Ireland.
Links...
1) F5LEN Tropo prediction map
2) ON4KST Chat
3) Post on D4C website
On Tuesday the 25th of September 2018, the marine duct from the Cape Verde Islands expended as far north as the British and Irish Isles again.
At 21:10, EI3KD managed to repeat his record distance by working D4Z on cw for a second time, a distance of 4163 kms.
At approx 21:46, GW0KZG in IO71LW in the west of Wales worked D4Z to extend the record to approx 4270 kms. It turned out to be one of the shortest held records however,
At approx 21:47, Peter Torrry G3SMT worked D4Z (HK76MU) to set a new IARU 144 MHz Region 1 record of 4431 kms. Peter's locator square is IO82KV.
DX-Cluster spots - 25th Sept 2018...
GW0KZG 144300.0 D4Z 22:12 25 Sep IO71LW HK76MU still 519 cal Cape Verde
G3SMT 144300.0 D4Z 21:46 25 Sep IO82KV HK76MU Cape Verde
GW0KZG 144300.0 D4Z 21:45 25 Sep IO71LW HK76MU 539 tks QSO Cape Verde
G7RAU 144300.0 D4Z 21:42 25 Sep IN79JX HK76MU 599+ cq, gl Cape Verde
G7RAU 144300.0 D4Z 21:18 25 Sep IN79JX HK76MU 559! wow! Cape Verde
EI3KD 144300.0 D4Z 21:11 25 Sep IO51VW HK76MU tnx! 589 cq Cape Verde
D41CV was also worked on FT8...
M0BUL-@ 144174.0 D41CV 22:28 25 Sep tnx Cape Verde
GW0KZG 144174.0 D41CV 22:27 25 Sep IO71LW
EI3KD 144174.0 D41CV 22:22 25 Sep IO51VW HK76MU oops call :) Cape Verde
G7RAU 144174.0 D41CV 22:19 25 Sep IN79JX HK76MU +03 FT8 GL! Cape Verde
This is the tropo prediction map for the path at the time...
Source : F5LEN |
It's probably likely that the record will be extended again at some stage in the future with perhaps a contact to Northern Ireland or Scotland.
Just to illustrate just how far the G3SMT - D44Z contact was, this is the equivalent distance across the Atlantic from the south-west coast of Ireland.
Links...
1) F5LEN Tropo prediction map
2) ON4KST Chat
3) Post on D4C website
Sunday, September 23, 2018
Irish results from the 2018 IOTA Contest
From the IRTS News...
IOTA Contest Results : Provisional results for the 2018 RSGB IOTA Contest have been announced. There were 2,200 entries for this contest, which took place at the end of July. East Cork Amateur Radio Group was the highest scoring station, with more than 3,700 QSOs. 23 EI and GI stations submitted logs, and their results can be seen at www.irts.ie/results which also includes a link to the complete results for all stations.
Non-DXpedition, High Power
1 EI7M EU115 Ireland 3,757 543 15,681,840
Single-Operator
Non-DXpedition, CW, Assisted, 12-hours, High Power
1 EI5KF EU115 Ireland 1,100 123 884,985
IOTA Contest Results : Provisional results for the 2018 RSGB IOTA Contest have been announced. There were 2,200 entries for this contest, which took place at the end of July. East Cork Amateur Radio Group was the highest scoring station, with more than 3,700 QSOs. 23 EI and GI stations submitted logs, and their results can be seen at www.irts.ie/results which also includes a link to the complete results for all stations.
Non-DXpedition, High Power
1 EI7M EU115 Ireland 3,757 543 15,681,840
Single-Operator
Non-DXpedition, CW, Assisted, 12-hours, High Power
1 EI5KF EU115 Ireland 1,100 123 884,985
Monday, August 27, 2018
Videos from the 2018 Amateur Radio Show in Tokyo..
See below the video clips showing the latest radios from Japan...
ICOM booth...
ICOM booth...
Sunday, August 19, 2018
RTE podcast about amateur radio at Loop Head Lighthouse
On Saturday 18th & Sunday 19th August 2018, members of Limerick Radio Club activated Loop Head lighthouse in Co.Clare as part of the International Lighthouse and Lightship Weekend.
The Countrywide programme on RTE 1 radio had an interview with the club... see below...
Amateur radio enthusiasts are gathered at Loop Head in Co. Clare this morning to connect with fellow operators across the world as part of the 21st International Lighthouse & Lightship Weekend. John met members of the Limerick Radio club to find out more.
Listen here... https://player.fm/series/series-2281751/amateur-radio-loop-head
There was also a piece in a local newspaper... http://clareherald.com/2018/08/ham-radio-operators-tune-into-loop-head-lighthouse-94816/
http://www.limerickradioclub.ie/
Wednesday, August 8, 2018
New World Meteor Scatter Record on 144 MHz... 7th Aug 2018
It seems to be a week of new records on 144 MHz. Following on from the new Region 1 tropo record on the 5th of August 2018, a new world record for meteor scatter on 144 MHz was set on the 7th of August.
In the early hours of the 7th of August, Dieter DJ6AG (JO51eq) in Germany worked Fernando EA8TX (IL18qi) in the Canary Islands to set a new world distance record of 3428 kms. The FSK contact took several hours to complete with the final decode being received in Germany at 00:14 UTC.
001430 16.0 220 1 26 9 R!RRRR EA TX RRRR RRRR EA8TX RRRR
The new record of 3428 kms breaks the old record between EA8TJ and S50C by 51 kms.
Previous best distances by meteor scatter on 144 MHz in Region 1...
Distance record on 144 MHz Propagation : MS
Band Propagation Call a Loc Call b Loc Mode Date Distance
144 MHz MS S50C JN76JG EA8TJ IL18RJ FSK441 2013-08-12 3377
144 MHz MS EA8TJ IL18RJ PA4EME JO20WX FSK441 2013-08-12 3132
144 MHz MS GW4CQT IO81LP UW6MA KN97VE CW 1977-08-12 3101
144 MHz MS HB9FAP JN47PH EA8TX IL18QI FSK441 2014-08-14 3077
144 MHz MS HB9FAP JN47PH EA8TJ IL18RJ FSK441 2013-08-13 3069
It's very probable that there was a combination of meteor scatter and tropo involved in this record. It was probably a long meteor scatter hop of about 2,200-2,300 kms from Germany to the south coast of Portugal and marine ducting tropo from there to the Canary Islands.
Is this the maximum?
In the early hours of the 7th of August, Dieter DJ6AG (JO51eq) in Germany worked Fernando EA8TX (IL18qi) in the Canary Islands to set a new world distance record of 3428 kms. The FSK contact took several hours to complete with the final decode being received in Germany at 00:14 UTC.
001430 16.0 220 1 26 9 R!RRRR EA TX RRRR RRRR EA8TX RRRR
The new record of 3428 kms breaks the old record between EA8TJ and S50C by 51 kms.
Previous best distances by meteor scatter on 144 MHz in Region 1...
Distance record on 144 MHz Propagation : MS
Band Propagation Call a Loc Call b Loc Mode Date Distance
144 MHz MS S50C JN76JG EA8TJ IL18RJ FSK441 2013-08-12 3377
144 MHz MS EA8TJ IL18RJ PA4EME JO20WX FSK441 2013-08-12 3132
144 MHz MS GW4CQT IO81LP UW6MA KN97VE CW 1977-08-12 3101
144 MHz MS HB9FAP JN47PH EA8TX IL18QI FSK441 2014-08-14 3077
144 MHz MS HB9FAP JN47PH EA8TJ IL18RJ FSK441 2013-08-13 3069
It's very probable that there was a combination of meteor scatter and tropo involved in this record. It was probably a long meteor scatter hop of about 2,200-2,300 kms from Germany to the south coast of Portugal and marine ducting tropo from there to the Canary Islands.
Is this the maximum?
Sunday, August 5, 2018
Japan heard on 28 MHz... Sun 5th Aug 2018
For the first time this summer, I have heard a Japanese station on FT8 on 28 MHz. As the map above shows, I heard JA4FKX at 08:39 UTC or 9:39am local time.
I have been monitoring the FT8 frequency on 10 metres more or less full time since early May 2018 and this is the most easterly station I have heard to date. Over the last few weeks, I have heard Thailand and Indonesia but they are more southerly paths.
The European stations that heard JA4FKX on 28 MHz today are shown below. These include MI0JST in the north of Ireland and GM4WJA in Scotland.
Other stations in Japan were also spotting JA4FKX so I presume it was genuine? I was just using the usual vertical half-wave about 5m above the ground.
I also checked the FT8 reception reports for other EI stations on 50 MHz and there doesn't seem to have been any similar opening on 6 metres.
Monday, July 30, 2018
SSTV signals received from the International Space Station... 30th July 2018
After seeing a news item on the Southgate Amateur Radio website last week, I had a try this evening at decoding signals on 145.800 MHz from the International Space Station as it passed over Europe.
This was my first time using the MMSSTV software and trying to decode Slow Scan TV signals so the images could probably be better.
Better image on the second pass...
The signals were heard with an indoor Slim Jim half-wave in the attic of the house.
The next scheduled passes that are within range of Ireland (& NW Europe) are on Tuesday 31st July... 16:59 to 17:08 UTC and 18:36 to 18:45 UTC. (Note times are UTC... Irish / British Summer time minus one hour).
For anyone on the South coast of Ireland or the UK, there is a very high pass at about 21:17 local time. Although the SSTV signals are supposed to be off at that stage, it should be a very good visual pass if the skies are clear.
Frequency : 145.800 MHz wide FM.
This was my first time using the MMSSTV software and trying to decode Slow Scan TV signals so the images could probably be better.
Better image on the second pass...
The signals were heard with an indoor Slim Jim half-wave in the attic of the house.
The next scheduled passes that are within range of Ireland (& NW Europe) are on Tuesday 31st July... 16:59 to 17:08 UTC and 18:36 to 18:45 UTC. (Note times are UTC... Irish / British Summer time minus one hour).
For anyone on the South coast of Ireland or the UK, there is a very high pass at about 21:17 local time. Although the SSTV signals are supposed to be off at that stage, it should be a very good visual pass if the skies are clear.
Frequency : 145.800 MHz wide FM.
Thursday, July 26, 2018
Presentation : "Modern QRP Rigs and the Development of the QCX CW Transceiver kit" by Hans Summers
Every year, the QRP Amateur Radio Club International hosts a QRP conference called Four Days in May (FDIM) in the United States. This year (2018), Hans Summers G0UPL of QRP-LABS made a presentation titled "Modern QRP Rigs and the Development of the QCX CW Transceiver kit".
He introduced three main themes, all based around use of the QCX CW transceiver as an example of a practical implementation and which he describes as follows :
Better architectures than the SA602 -> crystal filter -> SA602 superhet which I am calling the "cold war sandwich", since it has been around since the 1980's and heavily copied by amateurs ever since
Modern oscillators, in particular the Si5351A, which make it easy and cheap to make a crystal-locked flexible and precise oscillator
Use of microcontrollers in your projects.
The slides for the presentation are here... http://qrp-labs.com/images/news/dayton2018/seminar.pdf
The audio of the presentation can be found on the Ham Radio Workbench website.... https://www.hamradioworkbench.com/podcast/2018-qrp-arci-fdim-hans-summers-g0upl-and-dr-jack-purdum-w8tee
Listen to the podcast from 1h 20m to 2h 02m and refer to the slides during the talk.
The full 41 pages of the FDIM conference proceedings booklet from Hans Summers can be viewed here... http://qrp-labs.com/images/news/dayton2018/fdim2018.pdf
Links...
1) http://www.qrp-labs.com
Wednesday, July 25, 2018
70 MHz beacon from the USA heard in Portugal... 23rd July 2018
There was an interesting spot on the DX-Cluster on the 23rd of July 2018 stating that the US beacon WG2XPN/B had been heard in Portugal.
CT1HZE 70005.0 WG2XPN/B 20:16 23 Jul 519 3xEs! United States
The US beacon on 70.005 MHz is located in Virginia which is quite some distance to the south.
Freq. Call QTH Locator Contact Antenna Watt mASL Notes
70.005 WG2XPN Bedford, VA FM07FM WA1ZMS 3 el. 60° CW, 3 kW ERP, 15 m AGL
At a distance of some 6088 kms, the propagation mode was probably triple hop Sporadic-E as CT1HZE suggested... i.e. 3 x 2030 kms.
This isn't the first time that the WG2XPN/2 has been heard in Europe but it's pretty remarkable all the same. Since this American 70 MHz beacon started in 2013, it has been spotted roughly 130 times on the DX Summit cluster. These are the Trans-Atlantic spots...
CT1HZE WG2XPN/B 519 3xEs! 70005 2018-07-23T20:16:18
CT1HZE WG2XPN/B 559 3x Es 70005 2015-06-27T23:25:55
CT1HZE WG2XPN/B 539 3xEs FB 70005 2014-07-05T21:34:08
CT1HZE WG2XPN/B 419 3xEs 6081km 70005 2013-07-03T20:26:02
DI2MN WG2XPN/B JN58WH
DI2MN WG2XPN/B JN58WH
EA8/DL3GCS WG2XPN/B IL17
EA8/DL3GCS WG2XPN/B IL17AT
EA8/DL3GCS WG2XPN/B IL17AT<>FM07FM max 419 70005 2013-06-30T16:24:32
IS0AWZ WG2XPN/B 419-429 in JM49NG 70005 2013-07-07T17:10:58
Only five North American stations have bothered to spot it even though it could have been heard widely across the continent over the last few years... K1SIX, N2OTO, VE1PZ, VE9AA, W5LUA, WA1ZMS
Friday, July 13, 2018
IRTS release updated band plans for 40 MHz and 60 MHz...
Back in April of 2018, the Irish Radio Transmiters Society (IRTS) announced that Irish radio amateurs had gain access to a huge swathe of the VHF spectrum from 30 to 70 MHz.
In May, they released a proposed band plan with an invitation for comments.
Based on the feedback received, the IRTS have further refined the band plan and it can be seen HERE
While the band plan covers quiet a lot of spectrum, the IRTS considers the key areas to be 40-42 MHz for the 8-metre band and 58-60 MHz for the 5-metre band.
From the document....."IRTS considers that the band most likely to be transverted to an IF of 28 – 30 MHz might be 40 – 42 MHz." ... "Similarly to 40 MHz the band most likely to be transverted to an IF of 28 – 30 MHz is considered to be 58 – 60 MHz."
They are inviting comments before the end of July 2018.
Links...
1) New proposed band plan (v6) ...link may break in time
2) Copy of new proposed band plan (V6)
3) My 40 MHz page where I keep some information
Friday, July 6, 2018
Reception of the OZ7IGY beacon on 40 MHz - Fri 6th July 2018
Both 28 MHz and 50 MHz were wide open on Friday the 6th of July 2018 with plenty of strong Sporadic-E signals on the bands. One of the best things about monitoring FT8 signals on 28 MHz is that I can get a very good idea of where the band is open to.
Since I started listening in mid-May, the 28 MHz band has been open every day but openings from Ireland to Denmark are the exception rather than the norm. Openings from Ireland to the South to Spain / Portugal or the South-East to Italy/Germany seem a lot more common.
Today was an exception and as soon as I saw FT8 spots from near Copenhagen on 28 MHz, I listened on 40.071 MHz for the OZ7IGY beacon. As can be see from the decoded PI4 spots below, I was hearing the 40 MHz beacon from about 13:20 UTC till 21:00 UTC with some gaps.
The 40 MHz signal was never that strong although my use of an indoor 50 MHz antenna probably has a lot to do with that.
This is currently the only signal in Europe on the 40 MHz band.
OZ7IGY beacon decodes below... (Signals stronger than -10dB sigal to noise ratio in bold)
Sunday, July 1, 2018
EI DMR registrations at the end of June 2018
As of the end of June 2018, there were 126 DMR registrations allocated to EI callsigns. It had looked as if the growth in digital registrations had begun to taper off at the end of 2017 but it continued to grow in 2018.
Sunday, June 24, 2018
Illegal fishery buoy on the 28 MHz FT8 frequency
Anyone that uses 28 MHz on a regular basis will have heard illegal driftnet fishing buoys which give out a short carrier followed by an id in morse.
Over the last few days, I have heard one on the FT8 frequency of 28.074 MHz (USB). It is shown below in the waterfall plot as a short narrow carrier in amongst all the FT8 signals.
It is a solid carrier for about 10 seconds and is then followed by the letters E H in morse code. (Something like a 10 second dah followed by dit.....dit dit dit dit ). It transmits every 2m 30s.
I only noticed it in the last few days so I presume that it was only recently switched on.
As for the location, these are the FT8 signals I was hearing at the time....
I would guess either the western Med or out in the Atlantic but it's very difficult to know.
Links...
1) IARU Region 1 page on 28 MHz driftnet buoys
Wednesday, May 9, 2018
New experimental digital gateway for Cork Harbour...
In order to facilitate testing of digital modes, Don EI8DJ has set up an experimental low power gateway at his home in Crosshaven in Cork Harbour. Please note that this will be on air only when Don is in the shack so it won't be on 24/7.
Some of the specs are as follows...
Frequency : Simplex on 438.700 MHz
Modes : DMR, DSTAR, Yaesu System Fusion and P25
DMR Settings : Colour Code 1, Time Slot 2.
Power : 5w into a Diamond X50 colinear.
Coverage is dependent on terrain but tests suggest that it is pretty good out to about 10kms and perhaps further to stations out to 20kms on higher ground. Radio coverage software suggests that it may be accessible from high ground on the north side of Cork City but the south side might be out of range.
As can be seen from the map, it is in an ideal location for radio amateurs on visiting cruise and passanger ships stopping off at Cobh and Ringaskiddy.
If you have any questions about the gateway, Don can usually be found on the Cork repeater or on the Southern Ireland Repeater Network.
Traffic and signal levels heard on the EI8DJ gateway can be seen HERE
For more information on digital radio locally, have a look at the digital page on the Southern Ireland Repeater Network website.
Some of the specs are as follows...
Frequency : Simplex on 438.700 MHz
Modes : DMR, DSTAR, Yaesu System Fusion and P25
DMR Settings : Colour Code 1, Time Slot 2.
Power : 5w into a Diamond X50 colinear.
Coverage is dependent on terrain but tests suggest that it is pretty good out to about 10kms and perhaps further to stations out to 20kms on higher ground. Radio coverage software suggests that it may be accessible from high ground on the north side of Cork City but the south side might be out of range.
As can be seen from the map, it is in an ideal location for radio amateurs on visiting cruise and passanger ships stopping off at Cobh and Ringaskiddy.
Click to see large version of Cork City north side coverage |
If you have any questions about the gateway, Don can usually be found on the Cork repeater or on the Southern Ireland Repeater Network.
Traffic and signal levels heard on the EI8DJ gateway can be seen HERE
For more information on digital radio locally, have a look at the digital page on the Southern Ireland Repeater Network website.
FT8 on 28 MHz... Wed 9th May 2018
This morning, I noticed that the 28 MHz band was open but I couldn't hear one single CW beacon on the band. After hearing about the popularity of the latest digital mode FT8, I downloaded it and was listening on the band within an hour.
This is what I heard today on 28 MHz in Europe on FT8...
Most are about the right distance for Sporadic-E but there were a few suprises. The stations in the UK and Brittany were about the 500km mark...a bit short for Sporadic-E but not unknown. The ones in Bulgaria, Turkey and Russia are too long for one hop Sporadic and were probably multi-hop.
Outside of Europe, I heard these....
Like yesterday, I suspect that some Sporadic-E was helping out for the first hop to get down to lower latitudes where F2 propagation was possible. Still though, some interesting signals were heard. The one is Angola was a UW5EJX maritime mobile off the African coast.
In the 12 or so hours from 11:00 UTC to 22:00 UTC, I heard 104 different stations spread across 31 countries.
After just one day listening on the mode, I am very impressed at what I heard with a simple vertical antenna.
Links...
1) WSJT-X software suite
2) PSK reporter
This is what I heard today on 28 MHz in Europe on FT8...
Most are about the right distance for Sporadic-E but there were a few suprises. The stations in the UK and Brittany were about the 500km mark...a bit short for Sporadic-E but not unknown. The ones in Bulgaria, Turkey and Russia are too long for one hop Sporadic and were probably multi-hop.
Outside of Europe, I heard these....
Like yesterday, I suspect that some Sporadic-E was helping out for the first hop to get down to lower latitudes where F2 propagation was possible. Still though, some interesting signals were heard. The one is Angola was a UW5EJX maritime mobile off the African coast.
In the 12 or so hours from 11:00 UTC to 22:00 UTC, I heard 104 different stations spread across 31 countries.
After just one day listening on the mode, I am very impressed at what I heard with a simple vertical antenna.
Links...
1) WSJT-X software suite
2) PSK reporter
French Guyana worked on 28 MHz...
Tues 8th May 2018... The Sporadic-E season is now well under way with plenty of signals being heard on the 10 metre band. On Tuesday the 8th of May, the band was open to part of Europe like Germany, Poland, Austria, Czech Republic, North Italy and Spain. As Sporadic-E signals go, it was nothing out of the ordinary with most around the 1200 to 2000km distance.
FY5KE... In the evening (16:45 UTC), there was an opening to South America which was interesting. I heard a station in Brazil on SSB and I worked FY5KE in French Guyana on CW with the first call.
Perhaps not the rarest of calls but interesting all the same. It's great to have the 10 metre vertical working properly again after repairing it last weekend.
The distance was 6600 kms which was pretty good. Almost certainly, the first hop from Ireland was via Sporadic-E out into the North Atlantic...maybe 1500kms or so... and the rest of the roughly 4000 kms was via other multiple hops.
Even though the Solar Flux is down around 70, F2 layer propagation might be possible from more southern latitudes like Spain, hence the need for the first Sp-E hop from Ireland.
Fishing buoy... I also came across a fishing buoy beacon on 28.420 MHz. This one was giving out a 5 second carrier followed by the letter 'D' (I think as it was very weak) and then would stay silent for 2m 25s. As far as I know, these are used to mark the location of fishing nets. Even though they are illegal, they seem to be pretty common and I would guess that this one was probably operating somewhere out in the Atlantic? The fact I heard it around the same time as the opening to South America would suggest this to be the case.
FY5KE... In the evening (16:45 UTC), there was an opening to South America which was interesting. I heard a station in Brazil on SSB and I worked FY5KE in French Guyana on CW with the first call.
Perhaps not the rarest of calls but interesting all the same. It's great to have the 10 metre vertical working properly again after repairing it last weekend.
The distance was 6600 kms which was pretty good. Almost certainly, the first hop from Ireland was via Sporadic-E out into the North Atlantic...maybe 1500kms or so... and the rest of the roughly 4000 kms was via other multiple hops.
Even though the Solar Flux is down around 70, F2 layer propagation might be possible from more southern latitudes like Spain, hence the need for the first Sp-E hop from Ireland.
Fishing buoy... I also came across a fishing buoy beacon on 28.420 MHz. This one was giving out a 5 second carrier followed by the letter 'D' (I think as it was very weak) and then would stay silent for 2m 25s. As far as I know, these are used to mark the location of fishing nets. Even though they are illegal, they seem to be pretty common and I would guess that this one was probably operating somewhere out in the Atlantic? The fact I heard it around the same time as the opening to South America would suggest this to be the case.
Sunday, April 29, 2018
Irish radio amateurs gain access to huge swathes of the VHF spectrum
The Irish Radio Transmitters Society announced today in their weekly news that Irish radio amateurs are to gain access to a huge part of the low band VHF spectrum.
EI stations will now have access to 30 to 49 MHz...all 19 MHz!!! The spectrum from 54 to 69.9 MHz has also been allocated... another 16 MHz! All of this is on a secondary basis and a 50 watt power limit.
Over the years, it's usual for the IRTS to lobby the licensing authority to get access to a small band here and there but not on this scale. I'm still assuming it isn't a mistake as the information on the Comreg website has been verified in the IRTS news. It may well be possible that it may in time become more defined as two distinct bands in the 40 MHz and 60 MHz region but for now, you can see the allocation as per the Comreg website shown above.
IRTS News...
Additional Frequencies
In December 2015 ComReg published a Draft Radio spectrum Management Strategy 2016-2018. The Society responded with a comprehensive submission to this draft and a summary of this was published in the March 2016 edition of Echo Ireland.
In June 2016 ComReg published its final Radio Spectrum Management Strategy 2016-2018 and indicated its intention to grant some additional spectrum to the amateur service. This has now been done and is in line with some of the requests made in the Society’s submission.
The 70 MHz band has been extended to 69.9 MHz to 70.5 MHz. This is an increase of 275kHz over the existing band of 70.125 to 70.450 MHz and is the full band that may be allocated to the amateur service under the European Common Allocations table.
Further spectrum covering all modes including digimodes has been granted on a secondary basis at 30 to 49 MHz and 54 to 69.9 MHz. The latter band also includes digital television in addition to all other modes. These new frequency bands are listed among the bands available generally to radio amateurs in Annex 1 of a recently revised version of the Amateur Station Licence Guidelines document ComReg 09/45 R4 which is available on the ComReg website.
The new bands in the 40 MHz and 60 MHz regions will, among other things, facilitate modern type beacons in the region of these frequencies as well as moving the existing 70MHz beacon on 70.130 MHz to the section of the band designated for beacons.
IRTS will be producing a local band plans for these two bands in consultation with countries that have allocations at these frequencies and IARU.
The Society would like to express its appreciation to ComReg for the release of this extensive spectrum to the amateur service on a secondary basis.
Source : IRTS News - 29th April 2018
Subsequent news item from the Royal Society of Great Britain (RSGB)..."In a landmark step, the Irish regulator Comreg has agreed to amateur access, on a secondary basis, to an extensive amount of VHF spectrum including 30-49MHz and 54-69.9MHz. In addition, their existing 4m band has been widened to the full 69.9-70.5 MHz CEPT range. It is expected that this will facilitate a number of innovative developments, including digital amateur television and new or realigned VHF propagation beacons. The RSGB congratulates its IRTS colleagues on their success, which dates back to a 2016 consultation input."
EI stations will now have access to 30 to 49 MHz...all 19 MHz!!! The spectrum from 54 to 69.9 MHz has also been allocated... another 16 MHz! All of this is on a secondary basis and a 50 watt power limit.
Over the years, it's usual for the IRTS to lobby the licensing authority to get access to a small band here and there but not on this scale. I'm still assuming it isn't a mistake as the information on the Comreg website has been verified in the IRTS news. It may well be possible that it may in time become more defined as two distinct bands in the 40 MHz and 60 MHz region but for now, you can see the allocation as per the Comreg website shown above.
IRTS News...
Additional Frequencies
In December 2015 ComReg published a Draft Radio spectrum Management Strategy 2016-2018. The Society responded with a comprehensive submission to this draft and a summary of this was published in the March 2016 edition of Echo Ireland.
In June 2016 ComReg published its final Radio Spectrum Management Strategy 2016-2018 and indicated its intention to grant some additional spectrum to the amateur service. This has now been done and is in line with some of the requests made in the Society’s submission.
The 70 MHz band has been extended to 69.9 MHz to 70.5 MHz. This is an increase of 275kHz over the existing band of 70.125 to 70.450 MHz and is the full band that may be allocated to the amateur service under the European Common Allocations table.
Further spectrum covering all modes including digimodes has been granted on a secondary basis at 30 to 49 MHz and 54 to 69.9 MHz. The latter band also includes digital television in addition to all other modes. These new frequency bands are listed among the bands available generally to radio amateurs in Annex 1 of a recently revised version of the Amateur Station Licence Guidelines document ComReg 09/45 R4 which is available on the ComReg website.
The new bands in the 40 MHz and 60 MHz regions will, among other things, facilitate modern type beacons in the region of these frequencies as well as moving the existing 70MHz beacon on 70.130 MHz to the section of the band designated for beacons.
IRTS will be producing a local band plans for these two bands in consultation with countries that have allocations at these frequencies and IARU.
The Society would like to express its appreciation to ComReg for the release of this extensive spectrum to the amateur service on a secondary basis.
Source : IRTS News - 29th April 2018
Subsequent news item from the Royal Society of Great Britain (RSGB)..."In a landmark step, the Irish regulator Comreg has agreed to amateur access, on a secondary basis, to an extensive amount of VHF spectrum including 30-49MHz and 54-69.9MHz. In addition, their existing 4m band has been widened to the full 69.9-70.5 MHz CEPT range. It is expected that this will facilitate a number of innovative developments, including digital amateur television and new or realigned VHF propagation beacons. The RSGB congratulates its IRTS colleagues on their success, which dates back to a 2016 consultation input."
Friday, April 27, 2018
Germany to get 70 MHz allocation from 2nd May to 31st Aug 2018
I saw a news item recently that Germany is to get a temporary allocation on 70MHz again in 2018 from the 2nd of May to the 31st of August.
The allocation will be from 70.150 - 70.180 MHz. This does of course coincide with the Summer Sporadic-E season which will greatly increase the chance of making some contacts.
The suggested range for someone in central Germany is shown below....
The shortest skip distance is likely to be around the 1000 km mark and will probably require a very intense opening, possibly from mid May to early July.
The longest skip distance should be around the 2200 km mark. It's likely that the most common openings will be around the 1500 to 2000 km range.
If you live in Ireland, it might be handy to check for some useful markers. If you can hear Polish radio stations on 88-108 MHz, then check 70MHz to see if it is open to Germany. If you can hear Dutch or Belgian stations on 50 MHz, then check 70 MHz.
The allocation will be from 70.150 - 70.180 MHz. This does of course coincide with the Summer Sporadic-E season which will greatly increase the chance of making some contacts.
The suggested range for someone in central Germany is shown below....
The shortest skip distance is likely to be around the 1000 km mark and will probably require a very intense opening, possibly from mid May to early July.
The longest skip distance should be around the 2200 km mark. It's likely that the most common openings will be around the 1500 to 2000 km range.
If you live in Ireland, it might be handy to check for some useful markers. If you can hear Polish radio stations on 88-108 MHz, then check 70MHz to see if it is open to Germany. If you can hear Dutch or Belgian stations on 50 MHz, then check 70 MHz.
Tuesday, April 17, 2018
Night time scan of the Medium Wave band during April 2018
Following on from the day time scan of the Medium Wave band that I did back in March 2018, I have spent the last four weeks listening to the band at night. As before, I was using basic domestic radios at my house near Cork City on the south coast of Ireland.
I used the Silvercrest above which is a very basic and not so sensitive receiver to find a signal using the digital frequency readout. I would then use the more sensitive analogue Sony radio below to listen to the signal properly so I could identify it.
All of the signals were heard roughly 2-4 hours after sunset... approx 9pm to 1am local time. As you might expect, a lot more signals were heard during the hours of darkness and the full list is shown at the bottom of the page.
Some stats and figures....
a) Spain...A total of 109 different signals were heard and roughly 50% of those were from Spain. With the sea path to the south from Ireland, it was probably no suprise that the Spanish signals were so strong and numerous on the band.
b) Gaps....Tuning from 531 kHz to 1602 kHz, there were 35 channels where no signal was heard. It's not that there was no signal there, it's just that I couldn't hear one. In some cases, very strong signals tended to block out the adjacent channels.
c) Countries......The countries with the highest number of stations heard were Spain and the UK. The only signal heard from Eastern Europe was Radio Free Europe in Lithuania.
Italy...Some stations in the north-west of the country were heard at about 1400kms.
Algeria & Tunisia....Some high power stations were heard here along the north African coast at roughly 2000kms.
Portugal...Not too many from there.
France....Two signals....a monster 1 megawatt transmitter in the south east (~1500kms) and a digital DRM (Digital Radio Mondiale) transmitter from a site near Brest in Brittany (~500kms). The DRM signal could be heard as a hissing signal with no obvious pattern.
Belgium and the Netherlands...Not too many from there.
UK...The UK signals were by far the most interesting ones to hear. Many were buried in the noise and were only identified by listening to a particular song and then checking online to see what they were playing. I found that the online feeds were often 20-30 seconds behind the live radio signal.
Strong English Stations.....In terms of strong signals that could be listened to at night, these were the strong ones....
810 BBC Radio Scotland Westerglen??
882 BBC Radio Wales 100 Washford, Somerset, England
909 BBC Radio 5 Live 50 Clevedon, Somerset
1053 TalkSport 500 Droitwich, SW of Birmingham
1089 Talk Sport 2 Washford
1215 Absolute Radio 100 Washford, Somerset, England
1341 BBC Radio Ulster 100 Lisnagarvey, Belfast
1368 Manx Radio 20 Isle of Man
These were what I would call acceptable quality. Most of the others had too much interference with them to really listen to. I found it interesting in how on a band full of signals, I could only find seven English speaking stations that were worth listening to at night.
Interference...This biggest issue when trying to listen to some of the UK stations was the level of noise and interference. In many cases, there was a strong Spanish station on the same frequency and it was a case of rotating the radio and nulling out the Spanish station using the directional properties of the internal ferrite rod aerial. On one occasion, I could hear a Spanish station perfectly clear, I'd rotate the radio by 90 degrees and there was a perfectly clear English station on the same frequency.
Echo......Some of the UK and Spanish stations are using the same frequency multiple times in their respective countries. It probably sounds fine in the targeted service area but outside the service area, it results in a loud echo which makes it difficult to listen to.
2 second echo......This was an interesting one. There are two Smooth Radio transmitters listed on 1557 kHz.
1557 Smooth Radio 0.76 Northampton
1557 Smooth Radio 0.5 Southampton
It was impossible to identify which one I was hearing until I realised that I was actually hearing both of them with a two second delay between them! I'm not sure which one was first but I was certainly hearing both of them.
In conclusion...... It was interesting to do a detailed scan of the medium wave band to get a feel for what it is like currently. It is something I would have done many many years ago when I first started listening on radio.
What's pretty obvious is that a lot of stations in Central and Eastern Europe have now closed down their medium wave transmitters and have moved to VHF and digital. Looking at the various frequency listings and from my own observations, Spain and the UK are the two main countries in Europe that still use the medium wave band in a big way.
In the past, I would have listened to the band using a long wire aerial... great for bringing in the weak signals but it can't discriminate between stations. With so many Spanish stations on the band, it is really important to have a directional aerial so that some stations can be nulled out.
I was also suprised as to just how well the internal ferrite rod aerial in the Sony radio performed as it pulled in some of the lower power stations in the UK, especially the ones under 1kw. Prior to this, I would have assumed that I would need a long wire to pull in the low power ones but that doesn't seem to be the case.
The full list of station heard is below...
I used the Silvercrest above which is a very basic and not so sensitive receiver to find a signal using the digital frequency readout. I would then use the more sensitive analogue Sony radio below to listen to the signal properly so I could identify it.
All of the signals were heard roughly 2-4 hours after sunset... approx 9pm to 1am local time. As you might expect, a lot more signals were heard during the hours of darkness and the full list is shown at the bottom of the page.
Some stats and figures....
a) Spain...A total of 109 different signals were heard and roughly 50% of those were from Spain. With the sea path to the south from Ireland, it was probably no suprise that the Spanish signals were so strong and numerous on the band.
b) Gaps....Tuning from 531 kHz to 1602 kHz, there were 35 channels where no signal was heard. It's not that there was no signal there, it's just that I couldn't hear one. In some cases, very strong signals tended to block out the adjacent channels.
c) Countries......The countries with the highest number of stations heard were Spain and the UK. The only signal heard from Eastern Europe was Radio Free Europe in Lithuania.
Italy...Some stations in the north-west of the country were heard at about 1400kms.
Algeria & Tunisia....Some high power stations were heard here along the north African coast at roughly 2000kms.
Portugal...Not too many from there.
France....Two signals....a monster 1 megawatt transmitter in the south east (~1500kms) and a digital DRM (Digital Radio Mondiale) transmitter from a site near Brest in Brittany (~500kms). The DRM signal could be heard as a hissing signal with no obvious pattern.
Belgium and the Netherlands...Not too many from there.
UK...The UK signals were by far the most interesting ones to hear. Many were buried in the noise and were only identified by listening to a particular song and then checking online to see what they were playing. I found that the online feeds were often 20-30 seconds behind the live radio signal.
Strong English Stations.....In terms of strong signals that could be listened to at night, these were the strong ones....
810 BBC Radio Scotland Westerglen??
882 BBC Radio Wales 100 Washford, Somerset, England
909 BBC Radio 5 Live 50 Clevedon, Somerset
1053 TalkSport 500 Droitwich, SW of Birmingham
1089 Talk Sport 2 Washford
1215 Absolute Radio 100 Washford, Somerset, England
1341 BBC Radio Ulster 100 Lisnagarvey, Belfast
1368 Manx Radio 20 Isle of Man
These were what I would call acceptable quality. Most of the others had too much interference with them to really listen to. I found it interesting in how on a band full of signals, I could only find seven English speaking stations that were worth listening to at night.
Interference...This biggest issue when trying to listen to some of the UK stations was the level of noise and interference. In many cases, there was a strong Spanish station on the same frequency and it was a case of rotating the radio and nulling out the Spanish station using the directional properties of the internal ferrite rod aerial. On one occasion, I could hear a Spanish station perfectly clear, I'd rotate the radio by 90 degrees and there was a perfectly clear English station on the same frequency.
Echo......Some of the UK and Spanish stations are using the same frequency multiple times in their respective countries. It probably sounds fine in the targeted service area but outside the service area, it results in a loud echo which makes it difficult to listen to.
2 second echo......This was an interesting one. There are two Smooth Radio transmitters listed on 1557 kHz.
1557 Smooth Radio 0.76 Northampton
1557 Smooth Radio 0.5 Southampton
It was impossible to identify which one I was hearing until I realised that I was actually hearing both of them with a two second delay between them! I'm not sure which one was first but I was certainly hearing both of them.
In conclusion...... It was interesting to do a detailed scan of the medium wave band to get a feel for what it is like currently. It is something I would have done many many years ago when I first started listening on radio.
What's pretty obvious is that a lot of stations in Central and Eastern Europe have now closed down their medium wave transmitters and have moved to VHF and digital. Looking at the various frequency listings and from my own observations, Spain and the UK are the two main countries in Europe that still use the medium wave band in a big way.
In the past, I would have listened to the band using a long wire aerial... great for bringing in the weak signals but it can't discriminate between stations. With so many Spanish stations on the band, it is really important to have a directional aerial so that some stations can be nulled out.
I was also suprised as to just how well the internal ferrite rod aerial in the Sony radio performed as it pulled in some of the lower power stations in the UK, especially the ones under 1kw. Prior to this, I would have assumed that I would need a long wire to pull in the low power ones but that doesn't seem to be the case.
The full list of station heard is below...
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