HAMNET Report 21 May 2017

In a communiqué issued on Wednesday,  Johann Marais ZS1JM has advised that he has decided to resign as Deputy National Director for HAMNET. He says “In the beginning I requested Paul to be the Director and undertook to assist him with the job. It is however the prerogative of the Director to appoint this deputy. I therefore resign with immediate effect to allow Paul to exercise this discretion. I remain a loyal and active member of HAMNET in the Western Cape.” End quote.

And a message received from Paul van Spronsen, HAMNET National Director, says “We wish to express our thanks to Johann Marais ZS1JM, who has served as Deputy National Director of HAMNET for the past several years.  We wish Johann well in his further efforts within the Offroad Rescue Unit, Wilderness Search and Rescue and as a continued member of HAMNET.  Johann’s replacement will be announced in due course.” End quote.

Rory ZS6RBJ of the West Rand Unit of HAMNET Gauteng South has sent me a report of their involvement in a bike ride held on 14th May. The Think Bike marshals have been experiencing difficulties communicating  between their marshal’s on bikes over varying distances using only their Hand Held Radios, even though some of the marshal bikes have been fitted with mobile whip antennas.

Chad ZS6OPS felt that the HAMNET unit could assist with this, and various communications tests were conducted amongst the HAMNET Gauteng South West Rand Unit members and several members obtained licences in their personal capacities for the frequency used by Think Bike in order to communicate with the Think Bike marshals. Tests conducted between the HAMNET vehicles on the Think Bike simplex frequencies yielded positive results amongst the West Rand HAMNET members. The duty on the 14th May was twofold. One, to provide communications for the event, and Two, to provide feedback and possible solutions for the marshals communications moving forward.

The event started with a briefing held at the Sasol Garage on Republic Road from 06h45 by the Think Bike event coordinator, Bill Nash, on the planned formation and route which the bikes would take along the highway. HAMNET gave a brief talk on radio procedure and their role in the morning’s activities and at about 08h00 all Think Bike marshals escorted the HAMNET vehicles to the World Wear Centre on Beyer’s Naude Road from where all bikers participating in the Bike Awareness Run would start.

We had 7 HAMNET vehicles in attendance which were crewed by a driver and two radio operators (one on amateur bands and the other on the Think Bike frequency) ensuring drivers could concentrate on the road during the run.

Although the event was expected to be attended by around 500 bikes, on the day only around 80-90 bikes took part. This was likely due to the cold weather, and the fact that this was the first event of its kind, not to mention it being Mother’s Day!

The group set off in convoy at 09h00, Think Bike marshals blocking the on ramp, left and centre lanes of the N1 South to allow the bikers to join the highway safely.

They rode the route which took the convoy along the N1 South, N12 West, N3 North and finally the Modderfontein off-ramp, with the final destination being the Fireman’s Tavern.

Think Bike marshals and JMPD crew (who unexpectedly joined the run) provided a vital role in traffic control as well as ensuring safety for all. Think Bike marshals are well trained and extremely professional and it was really eye opening to watch them at work. Before the convoy reached the next on-ramp along the route, the marshals along with JMPD had stopped traffic, which allowed the bikers to pass safely. Our HAMNET vehicles travelled on the left of the convoy which took up the centre lane on the highway for about a 1Km stretch of road.

Radio communications were good between Think Bike and HAMNET, with all teams and marshals in contact along the route. Think Bike’s radio procedure was also on point, and it made it very easy for us to keep in touch along the route. Fortunately there were no incidents along the way, and everyone arrived safely at Fireman’s Tavern.

From a HAMNET perspective we gained a lot of valuable knowledge. This was the West Rand Unit’s first official role in a “mobile” event, as we are all used to setting up field stations and control points during exercises and club activities, and working in convoy while on the move was a completely different challenge. VHF simplex operation was very reliable in this instance.

Another good learning curve was the ability to communicate with non-amateur radio organisations. We were given the opportunity to utilise the Think Bike frequencies during this event, which meant a lot of planning and equipment gathering before the event. However on the day of the event all the planning and testing certainly paid off.

Huge thanks to Think Bike for allowing us to take part. We look forward to working with them in the future. Another big thanks to all our HAMNET members who gave up their Sunday Morning and braved the cold to assist with the event, which from everyone’s comments afterwards, was a success.

Thank you to Rory, and the HAMNET volunteers.

And in an extraordinarily precise document, Dave Holiday ZS5HN of HAMNET KZN has sent me further information of the deployment of radio operators during the upcoming Comrades Marathon. I counted 28 amateur call signs in the list, and a lot of Land Cruiser Club members and CB operators as well. The forward planning in Dave’s document has to be seen to be believed, and, in that we are about 3 weeks ahead of the race, he and HAMNET KZN are to be congratulated on organisation well planned and well in advance! Thank you for keeping me in the loop Dave.

This is Dave Reece ZS1DFR, continuing to hold thumbs for rain in the Western Cape, and reporting for HAMNET in South Africa.

HAMNET Report 14 May 2017

Firstly, may I echo the wishes mentioned in the Headquarters bulletin, to all Mothers out there, for a very special and happy Mother’s day. Without you, we wouldn’t be here listening to this bulletin. In fact, without you, we wouldn’t be!

From, Globes, Israel’s Business Arena, comes news about disaster forecasting.

There are not yet any technologies capable of detecting in advance signs of an approaching natural disaster and providing people with reliable and adequate warning that can save human life. A new system being developed by Motorola Solutions, however, is designed to make coping with such crises and managing them substantially easier.

Development of this system began recently, after Motorola Solutions Israel won a  European Union tender for rapid and precise management of natural disasters and extreme events, based on data from sensors and indices that, when processed and analyzed, can provide the relevant forces in the field with an up-to-date status report.

Research and academic institutions in European countries are also partners in the venture led by Motorola Solutions. The pilot will take place in three cities, each of which has a problem with natural disasters: Thessaloniki, Greece, which suffers from extreme heat waves; Venice, Italy, which experiences frequent flooding; and Valencia, Spain, where forest fires are a frequent occurrence.

Although the developers of the system would have loved to develop a means of warning long in advance of a deadly impending natural disaster, at this stage, they will settle for a system able to manage the large quantity of relevant data that will enable hospital managers, police commanders, fire departments, and other initial responding rescue forces to make correct decisions, and  rapidly to take control of any catastrophe with a minimum number of casualties.

The system is being developed in the framework of a project called BeAware. It will be adapted to any scenario designed for it by the end user. The system is based on special physical sensors and databases of many authorities, including data from similar past extreme events; sensors adapted when necessary to testing the level of humidity in the air, the direction and strength of the wind, weather forecasting, and temperatures in real time; the sea level; traffic light control systems in the designated cities, etc. To these are added many other indices to be gathered by the system in real time: mobile phones of residents or visitors in each area will inform the system in real time how many people are in each area relevant to an analysis of an event, the state of occupancy in hotels or leisure centres, the number of students in schools at any given moment, the level of crowding in nearby hospitals and the state of the roads, so that rescue forces can select available access routes without getting stuck in endless traffic jams at a time when they are hurrying to extinguish fires or evacuating casualties for first aid treatment.

“Statistically, in every year for the past 30 years, tens of millions of people in the world have been affected by natural disasters of various types. It has been predicted that natural disasters will become more frequent in the coming years,” Motorola Solutions Israel VP business development Boris Kantsepolsky told “Globes.” “As of now, at least, the only possible way of handling such disasters is to find a better way of minimizing them, and we can do that using the existing available technological means developed over the past decade.”

The world has already been in an environment of large quantities of dynamic data. Almost every broadcasting device user can constitute a sensor in himself for such a system. Usually, however, these data are not processed or analyzed to produce an integrated and indicative picture which, if it does not prevent the next natural disaster, will at least make its management possible. “The challenge is sharing data and fusing information,” Kantsepolsky says. “The system will operate all the time, collect data, analyze them, and make correlations between them and the relevant reference scenarios for any entity that operates it. In an exceptional event scenario, it will facilitate a smooth transition from a routine situation to an emergency, in which every party involved in managing the event receives information relevant to him via a comfortable interface on the computer, tablet, smartphone, or communications device of the initial responders in the various theatres.”

Concern about flooding in Venice does not mean much to the average Israeli, who has his own troubles involving terrorism and military conflicts in one of the world’s craziest regions. For Motorola Solutions, the same thing that will improve the handling of the civilian population in the event of heat waves in Thessaloniki or widespread forest fires in Valencia can also be good for a small country surrounded by enemies, rockets, missiles, and nervous terrorists with machetes.

This all adds up to a very wide network of information assimilation, making available to all agencies all the data needed at the time to formulate a rapid response to disaster situations, both natural and manmade. It needed the development of the “Internet of Things” to make this data-gathering and distribution possible.

There’s just time left at the end of this bulletin to mention the dam situation. Apart from the Eastern Cape, whose dams are steady at 62% full, below the 72% of last year, poor Western Cape’s dams are the only ones to be a percentage point lower than last week at 20% full, compared to 31% this time last year. Remember, at least half of this 20% is unusable, because it will be too muddy and contaminated to be purified for domestic use. So we have water for about 30 days left in our storage dams. Further drastic steps are about to be implemented to reduce wastage, by reducing pressure in taps, and perhaps shedding, as was practised during the electricity shortages of a few years ago. There has been minimal rainfall this week in the Western Cape, and very little in the catchment areas. We watch the Western skies for signs of cold fronts with keen anticipation.

This is Dave Reece ZS1DFR reporting for HAMNET in South Africa.

HAMNET Report 7 May 2017

HAMNET South Africa would like to take the opportunity to congratulate Trevor Brinch ZS1TR, on being awarded the HAMNET SHIELD at this year’s SARL Awards Ceremony. He really does epitomize the radio operator of high standing, who goes out of his way to interact with relief organisations, and provide all sorts of emergency communications, without being asked. Well done, Trevor, you truly deserve this award!

Nearly 280 Amateur Radio communication volunteers on April 17 participated at the 2017 Boston Marathon, the 121st running of the event organized by the Boston Athletic Association (BAA), according to the ARRL Newsline. Warmer-than-typical temperatures for the Patriots’ Day race raised concern for increased medical issues, but lower humidity and some cloud cover later in the afternoon mitigated the potential for problems.

Amateur Radio’s primary communication role involved logistics. Amateur Radio operations included relaying medical resupply requests, picking up runners via medical sweep buses, conveying medical statistics as required by the Red Cross and Massachusetts Department of Public Health, and providing situational awareness as needed along the entire 26-mile route. Amateur Radio also backed up EMS communications, and the team relayed several ambulance requests along the route. Brett Smith, AB1RL, one of the BAA Organizational Committee representatives, said Marathon organizers were very pleased with the efforts of Amateur Radio Operators.

“Congratulations to everyone on a job very well done,” Smith said afterwards. “We were braced for a busy day, and our preparation helped see us through to make sure it was never anything we couldn’t handle.” Smith said that many volunteers enjoyed spending their day supporting the Marathon this year.

“We’re already seeing e-mails from our volunteers thanking us for our work too. So the work was appreciated not only by organizers from the BAA but the volunteers as well,” he said.

Course volunteer Matt Knowles, KC1AEI, was among them. “I feel like Amateur Radio plays an important role in the safety and security of the Boston Marathon,” said Knowles. “Our net operators were succinct, clear, and very patient, as we took care of our individual responsibilities on the course. All of the communications volunteers put forth a unified effort on Monday, which made for another successful race.

Rob Macedo, KD1CY, the other BAA Organizational Committee representative, reported that state emergency managers were very pleased with the logistics and situational awareness support from Amateur Radio operators. He was stationed at the Multi-Agency Coordination Centre (MACC), located at the State Emergency Operations Centre (EOC) in Framingham.

“At one point mid-afternoon, one of the two finish line medical tents was filled to capacity,” Macedo recounted. “The BAA and EMS representatives at the MACC were impressed at receiving the on- and off-diversion reports in a timely fashion from Finish Segment Coordinator Matt Brennan, NM1B.”

Start Segment Coordinator Mark Richards, K1MGY, said all of the planning and setup at the race’s starting point of Hopkinton paid off. “We provided BAA organizers at the start with an analysis that looks to correlate the planned and actual times of the start of the race very well,” he said.

Course Field Operations/Course Net Control Segment Coordinator Jim Palmer, KB1KQW, said he was pleased with the performance of the Amateur Radio teams throughout the event. “Numerous course Amateur Radio volunteers have already expressed their appreciation for a well-run, highly organized event, and are already looking forward to volunteering at the 2018 Marathon,” he said. Course volunteers logged an estimated nearly 1,000 volunteer hours, and Palmer said their support was instrumental to the success of the communication support mission.

At the Course Net Control Operations Centre in Brookline, students from Dexter-Southfield School provided support to net control operators during the event. Numerous nets cover the Marathon course, and all are run from this single location. Students regularly updated status boards, informing both local net control operators and the other net control operations centres of each ham radio volunteer’s location. Veteran net control operators dedicated some time to work with the students to teach them how marathon nets operate, providing a robust ham radio learning experience in an educational setting.

Amateur Radio is one of three radio communication systems used for the Boston Marathon. Eight Amateur Radio representatives, including segment coordinators, sit on the BAA Communications Committee with BAA officials and representatives of the Massachusetts State Police and a commercial communications contractor. Boston Marathon Medical Coordinator Chris Troyanos, who chairs the Communications Committee, has let the Amateur Radio community know that it is — and will remain — a vital component of Marathon communication support. — Thanks to Rob Macedo, KD1CY, and the ARRL News for this insert.

On a smaller scale, here in the Eastern Cape, Andrew Gray, ZS2G, of HAMNET Eastern Cape, tells me that 2 HAMNET members and 2 PEARS members assisted in the search for a man missing since Sunday last week. The man was finally found in the Van Stadens Gorge near the old bridge on Wednesday at midday. Andrew says there is no cell-phone coverage in that gorge, and 2 metre simplex communications were used. The Lady Slipper repeater is accessible from the bottom of the gorge, on 145.700MHz, and so the search group had contact with the outside world during the search.

We’ve also heard from HAMNET KZN that the volunteer group for the Comrades Marathon is increasing, with 36 of their target of 42 operators signed up. They now have 4 weeks to get another 6 people to volunteer. Come on, Ladies and Gentlemen, it’s for a good cause, and good fun to boot. Come out and exercise your mobile station, and your lungs, by contacting Dave Holliday ZS5HN in KwaZulu Natal. Thank you!

This is Dave Reece ZS1DFR reporting for HAMNET in South Africa.

HAMNET Report 30 April 2017

While the rest of the world is concerned about the economy, weather, armed conflict and amateur radio conventions, the Philippines has quietly suffered a 7.2 magnitude earthquake 10km below the sea just off its Southern corner. It happened at 22h23 our time on Friday evening, and was close enough to the shoreline potentially to affect 1.8 million people within a radius of 100km of the epicentre. This magnitude is very similar to the earthquake which struck off the coast of Japan in 2011, creating the huge tsunami which damaged the nuclear reactors at Fukushima, and which is still being mopped up. I am aware of two slightly weaker aftershocks, but, so far, there have been no reports of major casualties, so I guess the tectonic plates didn’t shift enough to create waves or destroy infrastructure on shore. And across the Pacific, Chile suffered 12 earthquakes in one coastal area in the 24 hours to midnight on Friday, with magnitudes between 4.3 and 5.9.

The International Amateur Radio Union Region One emergency communications coordinator, Greg Mossop G0DUB, has announced the availability of a downloadable emergency telecommunications guide, developed to provide materials suitable for training Radio Amateurs to participate in emergency events, and guidance to the individual amateur radio operator who wants to improve his ability to participate in such events or to simply have a better understanding of the process.
The guide has been translated from English into Portuguese, Spanish and Romanian, and is available at www.iaru.org/emergency-telecommunications-guide.html, so please download yourself a copy and keep it for reference. Thanks to Greg and the IARU Region 1 team.

The Sixth of May sees the Annual General Meeting of the SA Radio League, but unfortunately not all HAMNET members will be able to attend. If you are not attending, please give your proxy to a Hamnet member who will be there. For best advice, please contact your regional director, who should be able to put you in touch with the member attending closest to you. Remember, 240 attendees and proxies are needed to vote on any motions, so every attendance or proxy counts. Your proxy holder may arrive at the AGM with his handful of proxies and register them, so you can arrange to email them to your representative before he or she leaves for the venue, and they can be printed out for delivery. You can also email them to the venue before the meeting starts. So please do that now!

In a very nice write-up in the “Off Grid Ham” blog, Chris Warren, the author, lists the dangerous practices and warnings that should be on a laminated plastic card with every generator ever purchased. The kind of generator you and I might purchase for use at home or while camping is not cheap, and deserves to be well looked-after, run regularly, and kept where it is easily accessible when needed.

The author has put together a short list of important safety points:

  • Always store your generator and accessories in a way they can be quickly & easily accessible under adverse conditions.
  • Always use the correct type and size cables or cords to power your equipment from a generator. Never plug two extension cords together in series.
  • Generators should be bonded to earth ground whenever possible.
  • A transfer switch is the best and safest way to connect a generator to multiple loads, in other words, to your distribution board. This should only be installed by a qualified electrician.
  • Generators are the number 1 cause of non fire-related carbon monoxide poisoning deaths. Please use some basic sense to keep the area around a running generator well ventilated and to assure you don’t become a statistic.
  • Hearing protection should be used when constantly around running generators.
  • The use of a cable with a three-pin plug on each end, so you can plug your generator into a wall socket and thereby activate your house’s electrical supply in reverse, is an extremely dangerous hack and should never, ever be used to connect a generator to home wiring, or anything else.

Thank you to Chris Warren for this summary.

It’s time to look at the average dam levels across the country again. All province’s dam levels are as good now or better than they were this time last year, except for the Eastern Cape and the Western Cape. The Eastern Cape’s dams are steady at 62% full, compared to last week, but 9 percentage points lower than this time last year. The Western Cape’s dams continue to show a decline, by 1 percentage point per week, and are now at 21% full, compared to 29% last year. There is enough water to last the Cape Peninsula another 88 days, by which time we hope the Winter rains will have started. We were treated to a day of intermittent heavy showers on Wednesday just past, with an average of about 20mm of rain measured in the suburbs, and a good bit of thunder and lightning. The dam figures I just quoted were issued before Wednesday’s rain, so it remains to be seen if anything fell in the catchment areas of our main storage dams.

If you’re enjoying a well-earned long weekend on holiday this weekend, have a good time, and please drive safely when you drive home.

This is Dave Reece ZS1DFR reporting for HAMNET in South Africa.

HAMNET Report 23 April 2017

From ITWeb, dated 20 April, comes news that the Independent Communications Authority of South Africa (ICASA) has signed a technical agreement with Mozambique’s communications regulatory authority, the Autoridade Reguladora Das Comunicações.

ICASA says it is an agreement of co-operation and co-ordination in respect of spectrum management for telecommunications and broadcasting services. This will see the establishment of a technical committee which will address matters of common interest between the two regulators on radio frequency co-ordination.

In terms of this deal, the regulators will work together to ensure, among others, co-operation on the co-ordination, control and management of radio transmission spill-overs, and exchange of information and expertise in the field of radio communications.

“It is our commitment as regulators to make expertise, infrastructure and equipment available to assist each other on regulatory matters, including radio frequency spectrum investigations, possible cross-border spill-overs, and of course, co-ordination of our services,” says ICASA acting chairperson Rubben Mohlaloga.

The technical agreement is a culmination of the memorandum of agreement entered into by the two governments in June 2015, aimed at finding new approaches and strategies for consolidating, expanding and deepening areas of economic development, industrial and trade co-operation between Mozambique and SA.

This seems to me to have value for amateur radio, in that cooperation between South African and Mozambican radio operators in times of disaster will be more streamlined, and less likely to incur the wrath of the authorities.

Dave Holiday, ZS5HN, from HAMNET KZN says that Comrades Marathon planning is going well with 24 confirmed Ham Stations and 4 CB Stations so far.

The Event is on the 4th of June. Their Target is 42 Stations in total. Many of the HAMNET operators will in fact be stationary mobile, manning the watering stations along the route. HAMNET does not patrol the Comrades route as much as it does in Cape Town during the Two Oceans. The work of picking up stragglers during the Comrades is left to the race officials. However, it is important during the Comrades to have radio stations well spaced along the route, because the race is a good 30km longer than the Two Oceans, and the watering spots are places where reports come in of runners further back who want to be fetched.

Also, because the communications along the Comrades route is easier than the Two Oceans, which hides partly around the back of Table Mountain, Ham frequencies are used between stations and the local repeaters are more than adequate to keep channels open along the entire route.

The reason why HAMNET Western Cape used the City of Cape Town’s TeTRA system radios and channels last week, is that parts of the route are very difficult to access with amateur frequencies, and repeaters don’t cover them so well. In fact, even TeTRA doesn’t cover some of the parts of Chapman’s Peak Drive well, and we discussed subsequently the possible installation of double cross-band repeaters temporarily from the far side of Constantiaberg, so that mobile stations could still get in to our 145.700 repeater on Constantiaberg without direct access, and particularly when the TeTRA system fails as well. We monitored the 145.700 repeater in the JOC throughout the Two Oceans, but didn’t use it much, because wherever the TeTRA system was inaudible, so was the 145.700 repeater! The Western slopes of Chapman’s Peak are very precipitous, and the way to get communications out of there, is by pointing your signals directly South, perhaps to a temporary repeater to the South, and from there back into the 700 repeater. Something to consider for next year.

We wish Keith ZS5WFD and Dave ZS5HN good luck in collecting together their volunteers and working their usual magic on the Comrades route in June. If you assist at the Comrades each year, and haven’t offered your services yet, please contact Keith or Dave through your usual KZN HAMNET channels? Thank you.

Amateur radio in the future is going to be significantly intertwined with Information Technology, if it isn’t already so. The young amateur of the future, and the next generation of HAMNET volunteers, is going to be attracted to the ways in which they can merge their IT knowledge with the need to convey emergency messages, or data and picture files during times of disaster. The modern HF radios that attract new blood will be those with touch screens, and interactive menus like one finds in all the smart phones of today. In fact, being able to get your smart phone to interact with your radio will make it all even more attractive to you.

So I watch with interest the development of apps for Android and iOS platforms which allow the operator to control his radio from the phone, or send messages from phone to radio or vice versa. I’ve noted that some radios have Bluetooth capability, and that the audio in both directions from the radio can be received via Bluetooth headsets. Also, the programming of the radio can sometimes be done via Bluetooth, although I think this is unsafe, in case the data transfer is garbled by some interference of sorts. More importantly, the radio can be controlled and configured by Bluetooth, such that your handheld can be carried in your backpack, for example, while you operate it via your cell phone.

Digital Mobile Radio, or DMR, will have this capability, Android software can be used to drive the Digital Position Reporting System on D-STAR on the ICOM D5100, via Bluetooth, and AX-25 packet can be monitored off the Kenwood TH-D74 using iOS and an iPhone. These are encouraging advances, and I hope the systems will become more and more integrated, to allow data and pictures to be sent from cell phone sources at scenes of disaster, where a Laptop installation and USB connections to a radio are cumbersome. Let’s hope so.

This is Dave Reece ZS1DFR reporting for HAMNET in South Africa.

HAMNET Report 16 April 2017

HAMNET Western Cape participated yesterday in the management of the Two Oceans Marathon, said to be the most beautiful marathon in the world. In fairly decent weather, 17000 runners set off on the 21km  half-marathon event, and another 11000 ran the 56km Ultra race.

HAMNET’S role was to support the medical management of runners who were injured or retired along the way. To that end, we activated 6 minibus sweep vans, with a radio operator in each, patrolling the route and responding to calls to pick up runners who had opted out for one or other reason. We also had 3 Rover vehicles patrolling and being available to respond rapidly to any kind of emergency situation, relating to accidents, weather, or community situations along the way. There was also a courtesy vehicle manned to fetch any runners seen at a hospital and discharged, and return them to the finish; and a back marker, driven by a HAMNET member following behind the last runner. There were three timed cut-off points, one on the half-marathon, and two on the ultra, one at the 25Km mark, and another at the 42,2km marathon mark, removing from the field runners who had no chance of reaching the finish by 13h40, the final cut-off. These three cut-off points were manned by HAMNET members, all advertising their presence with our brand-new HAMNET feather banners, and helping to supervise, and report on, the cut-offs as laid out in the race regulations. Two of us manned the HAMNET radio room at the main Venue Operations Centre at Tygerberg Hospital’s Provincial Emergency Management Centre, and conveyed messages of a medical nature to the ambulance despatch team, as well as SAPS and Traffic Police, and Race organisers.

All mobile vehicles were tracked using a commercial tracking system, and the entire race route was visible, and all the vehicles tracked, on a huge TV wall in the disaster centre. Satellite weather pictures, and live TV coverage of important spots and front runners were all visible, and the senior medical personnel reacted to situations as they arose, and directed the response to situations.

Luckily the weather played ball, and the runners ran in a mild south-easterly wind, with maximum temperature of 25 degrees, and clear skies. There were no serious accidents or injuries on the route, though several runners were seen at hospitals, and kept overnight, or discharged after minor treatment. As so often happens in situations like this, the ones that are so organised that they cater for all eventualities, are the ones in which nothing calamitous happens. Thank goodness for that. Thank you to all the volunteers who made the race a success. I hope you slept well last night after the early start.

I promised you last week I’d tell you about early plans for the Comrades Marathon. Keith Lowes ZS5WFD, KZN Regional Director, says his team attended their first planning meeting at Comrades House in Pietermaritzburg on Wednesday 5th April.  The race is an up run starting outside the Durban (Ethekwini) City Hall at 05H30 on Sunday 4th June 2017.  The route remains the same as in 2015 except for the last 6Km before the finish into the stadium.  The race distance is just under 88Km.  A total of 46 water tables have been provided, of which at least 40 will require manning by radio operators.

The race will proceed along Old Main Road in Pinetown again, as the contractors of the “Go Durban” rapid transit system have assured race organisers that all road works will be completed in time. The finish will be at the Scottsville Race Course, as the previous venue at Alexander park was very congested, and the infrastructure did not comply with safety requirements.

Once again it will be a team effort between Hamnet, and REACT (the Citizen Band Radio organisation), and hopefully the Land Cruiser Club will assist us again this year. The main frequencies to be used will be 145.625MHz (the Highway Club repeater) and 145.750MHz (the Midlands Club repeater).

We look forward to hearing more of this combined exercise by KwaZulu Natal HAMNET and other helpers. Thanks for the news so far, Keith.

From what I can gather, our former HAMNET National Director, Francois Botha, has relinquished his ZS6 call-sign, by taking up residence in the Judicial Capital of the country, Bloemfontein. This is, of course, a very sensible choice, because Bloemfontein is a very nice place. I should know because I was born there! Francois and Estelle had recognised the value of scaling down, and moving to a gated retirement community in Bloemfontein was their ideal. And so we are going to have to get used to his Division 4 call sign, which is ZS4X. We hope you have formally moved in, Francois, and that you and Estelle will rapidly settle in and feel at home in your new environment. I’m sure HAMNET South Africa joins me in wishing you both well.

You digital communications enthusiasts will be happy to hear that Cape Town has finally entered the VHF and UHF digital era, with the installation of the first formal DMR/D-STAR repeater system on Bottelary mountain in the mid-southern Peninsula. Repeating D-STAR on both VHF and UHF, and DMR on UHF, capable of handling Yaesu’s System Fusion, and connected to the internet in the usual way, its presence will soon be found on the repeater lists for enthusiasts. There are not many digitally-equipped amateurs in Cape Town yet, but let’s hope the technology “goes viral”, to borrow a phrase, and users quickly join the ranks. Thank you to the Repeater Working Group’s senior technical boffins for installing this one quietly in the last 2 weeks.

May I take the opportunity to wish you all a Happy Easter, and a relaxing long weekend? And please drive carefully!

This is Dave Reece ZS1DFR reporting for HAMNET in South Africa.

HAMNET Report 9 April 2017

In further news about Tropical Cyclone Debbie, the worst since 2011, it made landfall between Bowen and Airlie Beach on March 28 and damaged many buildings, destroyed millions of dollars in crops, hit vital infrastructure, dumped lots of rain and caused flash flooding.

Radio amateurs experienced in dealing with cyclones prepared by checking their radio gear, dismantling fragile antenna systems, running emergency power generators and doing checks on the local repeaters in Bowen, Mackay, Central Highlands and Townsville regions. Those radio amateurs that still had HF antennas checked into the 20m and 40m Queensland WICEN Nets, and other established nets.

One of the affected towns, Bowen, had its VHF repeater on-air throughout, despite lack of mains power in the town, thanks to the Bowen Radio Amateur Group and in particular Geoff Buchanan VK4JDW who had the repeater at his house. That antenna system survived 200kph winds and the repeater was powered by the household emergency generator.

Further inland the Central Highlands Linked Repeater System was functional, however its northern coastal node, the Midge Point Repeater, went off-line due to power system and structural damage.

Hams have been part of the recovery efforts with many embedded in the Queensland State Emergency Service, Queensland Rural Fire Brigade, care organisations and support teams for power companies. Throughout the area many radio amateurs used emergency power to keep their stations on-air.

This report comes from information supplied by The Townsville Amateur Radio Club and the Wireless Institute Civil Emergency Network’s Queensland Northern Region by Gavin Reibelt VK4ZZ, and was issued by Jim Linton VK3PC, Chairman IARU Region 3 Disaster Communications Committee.

Meanwhile, the Western Cape may soon be declared a disaster area. Dam levels in the province stand at 24.3%. James-Brent Styan, spokesperson for the Minister of Local Government, Environmental Affairs and Development Planning, Anton Bredell, said: “We are still assessing the need to have the province declared a disaster area. These assessments get updated daily.”

The central Karoo district, West Coast district and Prince Albert have already been declared existing and ongoing disaster areas. As of March this year, new current disaster declarations supported by the provincial executive include the City of Cape Town, Witzenberg and Kannaland.

Additional and awaited new declarations are to be made for Knysna, Bitou,  Hessequa and the Oudtshoorn municipalities.

Bredell said that to date the province has already initiated certain interventions which have improved water security in some significant risk areas.

These interventions include equipped new boreholes as well as connections to the reservoir and pipe network in Laingsburg at a cost of R500000, a borehole drilled and equipped at a cost of R1.8million in Algeria, and two new boreholes at a cost of R2m in Tulbagh. The department has also allocated R2m to awareness programmes to drive water savings messages across the province.

The City, meanwhile, says the amount of rain that has fallen over parts of the metro will not materially change the low levels of dams and it is critical that we do not draw more from dams than is necessary during the upcoming winter months. The City, which utilises water from fewer dams than the province, says dam levels have declined to 26.2% – effectively about 16,2% – with approximately 100 days of useable water left at current consumption levels.

City Mayco member for informal settlements, water and waste services and energy, Xanthea Limberg, said the City is in the process of bringing forward several emergency supply schemes.

“This includes the Table Mountain Group Aquifer, a small-scale desalination plant, intensifying the City’s pressure management and water demand management programmes, and a R120m small-scale wastewater reuse plant at the Zandvliet water treatment works which will be capable of producing 10 million litres of high quality drinking water per day to the central and southern suburbs of Cape Town,” she said.

More exciting news in the City of Cape Town surrounds the preparation for the Old Mutual Two Oceans Marathon, which takes place this coming Saturday, the 15th April. 16000 runners will compete in the half marathon, and another 11000 will contest the 56km ultra race.

HAMNET is strongly represented, with 14 vehicles on the route, roving, sweeping for stragglers, or supervising at timed cut-offs. Medical headquarters are at Tygerberg Hospital’s Provincial Emergency Management Centre, from where Ambulances, Motorbike Paramedics, HAMNET vehicles, Traffic Police, SAPS, Refreshment station support and the likes will be managed. All vehicles on the route will be tracked, and trunked radio systems, set up in talk groups for each separate deployment, will be used. Back-up plans have been made in case weather interferes with the intention to run along Chapman’s Peak Drive, and decisions will be made before the race starts.

Weather predictions for Cape Town next Saturday so far suggest a cloudless sky, a gentle Southerly breeze of about 8kph, no rain, and a maximum temperature of 22 degrees.

The Sponsors, the Race Organisers, and Metro Emergency Medical Services are to be congratulated on a very finely tuned system, which is already running like clockwork, and we wish them all, and the 27000 runners, a successful and safe race.

Next week, I’ll tell you more about HAMNET’s other major event support, the Comrades Marathon, run during June in Kwazulu Natal.

This is Dave Reece ZS1DFR reporting for HAMNET in South Africa.

HAMNET Report 2 April 2017

Cyclone Debbie caused major damage, torrential rain and power cuts to tens of thousands of homes this week. Australian PM Malcolm Turnbull has activated a disaster response plan. With up to 250mm of rain forecast on Wednesday, authorities pleaded with people to stay off roads to avoid being stranded in floodwaters.

“We’ve already had two instances of people who were caught in a vehicle,” said Queensland Fire and Emergency Services Commissioner Katarina Carroll, adding flood rescues were now her “biggest concern”.

Her warning was reiterated by Mr Turnbull, who said nature had “flung her worst” at Queensland. Cyclone Debbie made landfall between Bowen and Airlie Beach as a category four storm, whipping gusts of up to 263km/h, and started moving inland as a tropical low storm.

Queensland Premier Annastacia Palaszczuk said three people had been confirmed injured, but that number could rise. She also expressed concerns that injured people were unable to contact emergency services.

Troops have arrived, the helicopters are overhead and Queensland has swung into full recovery mode.

At Ayr Fire Station, emergency workers were packing up their kits and waiting to be deployed. They expected to be airlifted to one of the remote towns cut off by the storm. There, they’d knock on doors and check on people – provided of course that the doors had not blown away.

Another fireman explained how he was itching to get out and help, even if just to give a comforting hug to someone who might be shell-shocked by the cyclone. Even in a massive emergency operation like this, it is those small gestures that make a difference.

Queensland Deputy Police Commissioner Steve Gollschewski said the worst-hit towns included Bowen, Airlie Beach, Proserpine and Collinsville.

“Those areas and the Whitsunday Islands remain difficult for us to contact and to get into,” he said.

Cyclone Debbie made landfall at close to its peak intensity, Dr Jeffrey D Kepert, head of the Bureau of Meteorology’s High Impact Weather Research said. Crucially, it was also very slow-moving. That “can be more damaging because the duration of strong winds is longer. As structures experience a longer battering, things like metal fatigue set in, leading to more damage. Also, more of the rain falls in the same area rather than being spread out, leading to a greater flood risk”.

Fortunately Debbie missed some key population centres, but the extent of damage remains unclear. Although tourists were hit hard, their hotels were “likely to have higher foundations” and be built more solidly than many ordinary homes near the coast, said Associate Professor David King from James Cook University.

Thank you to BBC News for that report.

Keith Lowes, KZN’s HAMNET Regional Director sent me a report and photos of a huge fire in a plastics warehouse last week.

The fire was reported to Ethekwini Fire & Emergency Services control centre at 09H42. The caller further stated that the company handles plastic products. The first Rescue Pump was despatched from the Jacobs fire station and arrived on scene at 09H50.  The officer reported that the building was already well alight and fire had penetrated the roof structure.

As further supporting Rescue Pumps arrived, a serious water shortage was experienced on the site and the fire continued to spread.  An assistance message at 10H30 from the officer in charge requested all available water tankers within the Ethekwini Region to be despatched to the incident.  The size of the  warehouse is approx. 900 metres by 600 metres.

The incident received international press coverage and local social media was abuzz with updates and images of the incident.  It also created quite a lot of panic and uncertainty regarding toxic smoke clouds and the possibility of evacuation.

By 19H00  with the spread of fire still not contained, a message reporting that 100 tonnes of fertiliser product, of which 40 tonnes was volatile, prompted Ethekwini Disaster Management to consider possible evacuation of what was proposed to be a 3-4 Km radius around the site.

Keith Lowes, ZS5WFD, had been monitoring his Fire Department radio and had been in discussion with his Deputy Provincial Director Dave ZS5HN, with a view to setting up an emergency net on the local Highway Club 145.625 repeater.

A WhatsApp group created for the recent Tour Natal Motor Rally was receiving numerous messages from HAMNET members, reporting their availability to assist, in addition to call-in’s on the repeater.

A local HAMNET Emergency WhatsApp Group was born during this incident, and  proved to be very effective.

At 20H30 Keith notified the Disaster Management Control Centre of HAMNET  member’s availability to assist with the evacuation should it be required, and that he was proceeding to activate ZS5DCC at the centre.  Dave ZS5HN co-ordinated the available stations on the repeater from his home in Amanzimtoti.

By 21H45, ZS5DCC was operational and  15 Hamnet members were available to assist if required.

Ethekwini Transport Authority had been informed by Disaster Management of the possibility of large scale evacuation and a fleet of busses had been placed on standby.  Sites had been identified as possible holding areas for the public at the University of KZN sports grounds, the Bluff Golf Course and Cato Manor sports grounds.

An update provided by Ethekwini Fire Chief Enoch Mchunu at 22H30 indicated that they had prevented the fire from spreading towards the fertiliser, and that evacuation of the surrounding area would not be required.

The JOC was stood down for the night at 23H30.

The use of WhatsApp is a very useful tool to keep members in touch with what is happening.  Keith has since created a “social” and an “Emergency” WhatsApp group. He thanked all those members who offered their services should the evacuation have been implemented. Thank you Keith for the comprehensive report.

As, usual, we finish our report with a quick look at the dams. On average, the country’s dams are 74% full, stable from last week, and better than the same time last year, by 19 percentage points. However, the Western Cape’s levels continue to drop, by yet another point to 26%, compared to 27% last week, and 32% this time last year. The City of Cape Town’s water department is considering increasing water tariffs, and reducing the allocation of free water to owners of low-cost homesteads, with a view to increasing capital to manage the shortage, and possibly to installing small scale desalination. It doesn’t get much more serious than this.

This is Dave Reece ZS1DFR reporting for HAMNET in South Africa.

REPORT 26 March 2017

From Express.co.uk this week comes news that a whole host of experts on eastern Europe have lined up to warn that the conflict in the eastern Ukraine could spark a widespread chemical disaster if industrial storage units of chlorine gas are damaged and the contents released into the environment.

The threat is not just hypothetical. On February 24 a stray artillery shell hit the Donetsk Filter Station’s chlorine gas depot, which stores around 7,000kg of the gas.

Fortunately, none of the storage units were damaged.

Robert Amsterdam, Russian political expert and lawyer at international law firm Amsterdam & Partners, said: “If one of those uncontrolled sites containing chemicals were to detonate, tens of thousands of people could be poisoned. It is a potential disaster on the scale of Chernobyl.”

Rudy Richardson, Professor of Toxicology at the University of Michigan backed up that view. He said: “In a situation like this, where a war zone is near a concentration of industrial facilities where toxic and explosive chemicals are manufactured and stored, it is possible that massive releases of toxic chemicals could occur.

“And that would result in high levels of civilian casualties.”

The United Nations Special Rapporteur on human rights and hazardous substances Basket Tuncak indicated that damage to just one chlorine-filled, 2,000-pound container has the potential to kill anyone within a 600-foot (200 metre) distance and poses dire health risks to the tens of thousands of surrounding residents.

In case of extensive damage, people living up to 4.5 miles (10km) downwind of the facility would need to be moved away within 24 hours.

Mr Tuncak told the UN: “Large chemical and industrial facilities are in areas where fighting is ongoing.

“Battles are now being fought in cities, close to industrial centres with factories increasingly at risk of being hit: The consequences for anyone living close by would be severe.”

He added: “All parties to the conflict need to be aware of the risks that continuous insecurity brings, including for a chemical disaster. Ultimately, it is about ensuring that all precautions are being taken to prevent such catastrophe to occur, and mainly for the fighting to stop.”

Clever technology coming out of Toronto, Canada, involves “insulated concrete forms”, or ICFs, (which) consist of two panels of Expanded Polystyrene foam, which are called EPS, with a hollow core in between. The panels are held tightly together by a patented web system, and can be stacked on top of each other in a way similar to Lego blocks,” says Keven Rector, Technical Services Manager at the company NUDURA.

These high-tech industry-leading forms have proven technologies to make building easier and faster, and are available in all form types and sizes, to accommodate all types of building and design requirements in times of disaster rebuilding. Each form is stacked, steel reinforced and filled with concrete to complete the building envelope of a home in one building step.

With their steel reinforced solid concrete core, these structures can withstand some of Mother Nature’s worst. NUDURA ICFs can endure winds of up to 400 kph and the non-toxic fire-retardant expanded polystyrene foam provides a fire protection rating of up to 4 hours, ensuring that your family and home are safe and secure in almost any situation.

The empty shells of expanded polystyrene foam can be put in place by hand, and once the “wall” has been built, filling the shell with concrete quickly surrounds the reinforcing steel holding the two panels together, and creates a solid weather-proof protection. Clever indeed!

And while we’re talking of clever protection, I heard today of a company in South Africa that has found a way to insert more or less invisible wiring into the transparent polycarbonate burglar bars becoming popular these days. The wires can be connected up into a mesh alarm system, such that sawing through, or burning the polycarbonate to gain entry to the building sets off the alarm, and makes a successful burglary unlikely. This is an extremely clever idea, protecting the contents of the building more effectively than the polycarbonate burglar bar on its own.

ARRL News reports that a thorough and fully annotated discussion of Near Vertical Incidence Skywave (NVIS) is available in the research paper, “Radio Communication via Near Vertical Incidence Skywave Propagation: An Overview,” by Ben A. Witvliet, PE5B/5R8DS, and Rosa Ma Alsina-Pagès.

First investigated in the 1920s, NVIS propagation was rediscovered during World War II as “an essential means to establish communications in large war zones such as the D-Day invasion in Normandy,” the paper notes, adding that the US Army subsequently sponsored a lot of NVIS field research, especially between 1966 and 1973. More recently, NVIS has become a popular means to enable close-in communication on Amateur Radio HF bands between 3 and 10 MHZ. NVIS can be used for radio communication in a large area (200-kilometer radius) without any intermediate manmade infrastructure, and it has been found to be especially suited for disaster relief communication, among other applications, according to the paper. Good reading for all amateurs expecting to erect an emergency station in the field.

Sadly, the dams in the Western Cape continued to drop their average content by another 2 percentage points, compared to last week, at 27%, and 6 percentage points lower than this time last year. The rest of the country’s dams are about the same as last week, or slightly higher, but none of them is in  a danger zone except the Western Cape. After some unusually hot weather this week, the Peninsula experienced 3 to 5mm of rain, which flattened the dust, but did nothing more. The evenings are cooler but any early frontal systems from the North-west continue to evade us!

This is Dave Reece ZS1DFR reporting for HAMNET in South Africa.

REPORT 19 March 2017

I didn’t realise last week how prophetic my words would be, when I wrote about the Cape Town Cycle Tour being subject to the mercies of the wind! Within twenty minutes of the first riders setting off from the Foreshore in Cape Town, the organisers had called the race off because of the dangerous South Easter whipping from the False Bay direction. You probably all saw the amazing videos of the bicycles floating like kites in the wind as the riders hung on to them for dear life. And if the front riders bailed out of their own volition because of the wind, you can imagine how difficult it would have been for the back riders, who are far less experienced, and less able to weather the headwind. Other endangering factors to the race were fires near the route in Hout Bay, and some risk to the riders from protesters down in the Southern Peninsula, which had already resulted in the organisers reducing the distance to about 74km. All in all, a wise decision by the organisers on a day of potential conspiring calamities, but bad luck indeed for the riders.

Roy Walsh ZS3RW wrote to tell of a simple incident in his neighbourhood that made him proud to be a HAMNET member. On Sunday 12 March, some fellows from the local clubs played cricket. One of the cricket players got hit by a bouncing cricket ball just above the eye. He should have had stitches but the medics at the field used steristrips and put them on his wound, which worked. After the game the guy wanted to clean his wound not knowing he should not have taken the plasters off.

“At church that evening I saw the wound still bleeding and because he did not have a medical aid I said I would contact someone and this is where the greatness of being a member of HAMNET came in” said Roy.

“I (ZS3RW) called Kobus Jooste ZS3KJ who is also a Paramedic at a local mine. He was very helpful and came to my house where he treated the young lad and off he went. The price? A great cup of coffee that I made for him (ZS3KJ) and his wife. This to me was just something that made me proud to say I am a member of HAMNET, where we could help someone.” Thanks for that Roy, and for being considerate.

From the Malagasy Daily Nation, comes the report that Madagascar has declared a national disaster after last week’s cyclone tore through the northern and eastern parts of the Indian Ocean island, leaving 78 dead and destroying thousands of homes.

According to the country’s National Bureau for Risks and Hazards Preparedness, Cyclone Enawo affected more than 390,000 people with 246,987 left homeless, 18 missing and 250 injured.

Madagascar’s President, Hery Rajaonarimampianina has asked for support from the international community. The Malagasy leader has been visiting the storm-hit areas to offer condolences and show support. He said the government will release a document that will highlight the issues in need of urgent relief.

Meanwhile, a cargo flight carrying 100 tonnes of humanitarian supplies from the United Arab Emirates arrived in the capital Antananarivo on Monday night. The aid includes medicine, food, and shelter kits which will be handed to the Malagasy government by the United Nations. Madagascar, a nation of an estimated 23 million people, has been hit by 46 natural disasters over the last 35 years.

And, for those who don’t live in Durban, the beachfront there was hit by storm-surge type waves on the 12th of March, as a side effect of Madagascar’s Cyclone, which finally spent its last energy on the KZN coast. The waves were not very high, but certainly washed across the front rows of car parking, and up to the doorways of the beachfront restaurants and cafes. Fortunately, the surge was not severe, but evidence that Mother Nature had been hard at work relatively nearby!

In general, the state of the water reservoirs around the country is fairly stable, with all but 2 of the provinces recording increases in dam levels this week, compared with last week and this time last year. Free State levels are 35% higher than this time last year, Gauteng and Kwazulu Natal 5%, Limpopo and Mpumalanga 19%, and North West and Northern Cape at least 40% more than last year. At 63%, the Eastern Cape is 10% down on last year, but the poor old Western Cape is 6% less than last year, at 29%. The situation here is becoming critical, because, apart from potable water for the population, water for industrial and commercial use will soon have to be restricted. Drinking water can always be brought in by tanker, or in bottles for consumers, but thousands of litres for factories and commercial users are harder to import. I wonder whether anyone in the world has considered the idea of building a desalination plant on a ship, which can sail from port to port, and provide emergency supplies where needed. The disadvantage apparently of a desalination plant is that it’s technology and catalytic materials deteriorate and it becomes a liability for the country to which it belongs, if it is not used all the time. Now a floating desalination plant could sail the seas and be used more or less continuously, thus “paying for itself”, so to speak.

Anybody got a couple of hundred million lying around unused, for us to corner this market?

This is Dave Reece ZS1DFR reporting for HAMNET in South Africa.