Wednesday, 28 September 2011

Heritage day on Table Mountain







South African Radio League - Heritage Day Sprint
1. Aim
To stimulate activity on 40 m and to promote public relations with respect to the various Heritage sites in South Africa on 24 September  – Heritage Day



Sponsor
The Sasolburg Amateur Radio Club, ZS4SRK.




A quick hike up from the Lower Cable Station via the Contour Path and up Platteklip Gorge to Maclears Beacon.  After taking a few photos of Maclears Beacon, the Mountain Club's War Memorial and the plaque in memory Gen. Jan Smuts I set up my radio station in an isolated area among  the rocks and fynbos on the North Eastern section of the mountain.



(All photographs  taken by Allen Wood on Heritage Day, 2011)
(All the text in italics quoted from "Table Mountain Activities Authors: Shaen Adey and Fiona McIntosh.")

The early explorers

" History records that the first white man to set foot on Table Mountain was Antonio de Saldanha, commander of a Portuguese fleet sailing around the Cape of Storms en route to India in 1503. After becoming separated from the rest of the fleet, his ship took refuge in an unknown bay sheltered by a high, flat-topped mountain. Saldanha, anxious to orientate himself, struggled up the obvious gorge that split the front of the mountain to the summit plateau.
From the top he could see that, as he had feared, the Cape of Storms still had to be rounded before he could reach the safety of False Bay. Nevertheless the trip was a fruitful one, for fresh water cascaded down the gorge through which he climbed. Thereafter Table Bay, known as Aguada de Saldanha (Watering Place of De Saldanha) became a regular stopover for the Portuguese fleets. In 1652 Jan van Riebeeck sailed into Table Bay and under his governorship Cape Town grew into an important, almost self-sufficient outpost of the Dutch East India Company.
Shortly after Van Riebeeck’s arrival he began work on a fort (the Castle of Good Hope) and encouraged settlers to grow crops. Soon the slopes of the mountain were being cultivated, the first Cape vineyards were planted and a European settlement was firmly established in the Cape. However, the industrious Van Riebeeck and his officials apparently never found the time to climb Table Mountain. Since Jan van Riebeeck put the Cape on the map, Table Mountain has been a powerful icon for Cape Town and South Africa, and is now one of the most famous landmarks in the world. A detailed account of all its historical places would occupy more than the entire book, so here are a few snippets to whet your appetite. More information can be found in Cape Town’s museums."





Maclear’s Beacon

" A cairn of rocks nearly 3m (10ft) high and topped with a beacon marks the highest point on Table Mountain, 1 086m (3 564ft). The beacon was constructed in 1844 by the then Astronomer Royal at the Cape, Sir Thomas Maclear, as part of his efforts to measure the arc of the meridian of the earth. "






" Nearby is the Mountain Club of South Africa’s memorial (unveiled and dedicated in 1923 by General Jan Christiaan Smuts), which bears the names of nine  members who died in World War I. One Sunday at the end of February you may chance on a brass band or similar group leading a large group of climbers in refrain."





" The natural amphitheatre below the beacon is the site of the annual memorial service, which was regularly attended by Smuts, a keen climber. A plaque in his memory can be found in the rocks below the beacon."


View of the Eastern section of Cape Town Harbour taken from my radio operating/station position.


I used a "stub matched" end fed half-wave dipole antenna supported in a lazy "L" formation using a light weight sectional fishing rod. The rig used was my FT817 for HF and a VX120 for VHF. Operating time was from approx 10hr00 to 15hr00.

Saturday, 10 September 2011

Tuesday, 30 August 2011

wild WEATHER, wild MOUNTAINS & wild RUNNERS

JONKERSHOEK EXTREME MOUNTAIN CHALLENGE !
ZS1PSG Peter, ZS1ZV Fred, ZS1XZ Erich, ZR1AAH Allen & ZS1PVS Paul assisted with race communications at the Jonkershoek Mountain Challenge trail running race on Sunday 21 August, near Stellenbosch.  This was the first running of a gruelling 30km course up, down and around the surrounding mountains.

Here is Paul's report on how events unfolded and the subsequent rescue operation............
" The communications team gathered at 5.30am and made some quick changes to the deployment plan due to the unavailability of one foot mobile operator.  Peter erected a field mast and operated base communications at the start/finish area.  Fred was assigned to a mobile communications post in Langrivierkloof (R3) at about 700m above sea level.  Allen, Erich and Paul left Fred's position at 6.15am and hiked for about 5km around to Bergriviernek (CP2) at about 1100m above sea level.  At this time it was about 12C and raining. 

On a fair weather day looking down on Bergriviernek near to where CP 2 was located !
Allen stayed to operate the checkpoint at Bergriviernek and Paul and Erich continued around towards the top of Kurktrekker gorge (CP1).  While en route, Paul and Erich radioed in the numbers of the  runners, who were running the trail in the opposite direction.  Allen did the same from his position at CP2.  The conditions at this time were cold, with freezing rain and strong wind. 

A little over half way to CP2, Paul and Erich came across a female runner (patient 1) who was clearly hypothermic, shivering uncontrollably and unable to speak.  Assisted by her running partner, Paul and Erich managed to wrap her up in a space blanket and put some warm clothing on her.  Erich then ran with full 20kg rescue pack, with patient 1 and her running partner back along the course and escorted them down the Kurktrekker escape route. Erich also assisted another approximately 20 runners to leave the route via the escape route at Kurktrekker thereby averting even more problems in the future. Erich manned his position in appalling conditions for a further hour to ensure the route was clear before leaving his position.
Taken the following Sunday......a view from the highest point on the route 

In the meantime Paul continued walking in the direction of Kurktrekker, calling in the numbers of passing runners to base.  Due to the cold, wet and windy conditions it was impossible to write numbers down and they had to be radioed in directly.  Peter established a priority channel on a separate frequency for this traffic.  The cold caused Paul not to be able to remember groups of three race numbers for more than a few seconds, so these had to be called in and captured promptly.

When it was apparent that no more competitors were coming along the course, Paul turned around and headed back towards the checkpoint where Allen was.  Approximately 2km before reaching Allen's position and at about 1200m above sea level, Paul came across another female runner (patient 2) who had collapsed due to hypothermia.  Paul and patient 2's running partner managed to balance her and proceeded in the direction of the course towards Allen's position.  After about half a kilometre, patient 2 could no longer carry her own weight and the combined efforts of Paul, the patient's running partner and the race sweep were not enough to manoeuvre her any further along the narrow, rocky track.  Unfortunately, this placed them on a North West facing cliff taking the full force of the weather.

Paul and Chris (the race sweep), put patient 2 under a waterproof groundsheet and took turns trying to warm her under the groundsheet and keep themselves warm and avoid muscle cramps by walking around.  Patient 2's running partner was still in reasonable condition and to prevent him becoming hypothermic and adding to the patient count, Paul an Chris convinced him to continue along the course.  Peter activated Wilderness Search & Rescue.

While all this was going on, another  male runner (patient 3) had stumbled towards  Allen's position in a serious state of hypothermia.  Allen gave him some warm clothing and wrapped him in a reflective sports/space blanket, then escorted him off the mountain via one of the pre-identified escape routes by alternately, pushing, pulling and dragging him (plus a fair amount of aggressive coaching!).  After a magnificent solo effort, Allen managed to get patient 3 safely to a 4x4 vehicle that had been put standby to collect them and return them to the paramedics on standby at the start/finish.

Paul and Chris were joined by another race official, Mark, who brought warm, dry clothing provided by Allen.  They put this on the patient, mainly due to Mark's efforts as he was the only one with working fingers at the time.  The three then dug in with patient 2 and waited for help.  They managed to improve the patient's condition to the point where she started shivering again and began to remember personal details, like her name, telephone number and the names of her children and husband.  The patient was given hot water from a flask and some snack food, which she managed to eat.  The conditions at this time were under 10C, with high wind, pelting rain and approximately 50m visibility. 

In the meantime, a full rescue effort had been mounted by Wilderness Search and Rescue (who had been briefed prior to the event) and field rescuers and logistics operators began steaming in.

The Skymed rescue helicopter arrived at the scene and proceeded to insert a mountain rescue medic and a paramedic as close to patient 2's position as weather and visibility would permit.  Nevertheless it was still approximately a two hour hike from where the helicopter inserted the medical personnel to the position of patient 2.  Unfortunately the weather only allowed for the insertion of one additional two person team before Skymed was forced to stand down. Other rescue personnel also began arriving on scene and teams were formed to carry in equipment for the anticipated stretcher carry and technical river crossings over some of the more than 10 waterfalls that had sprung up along the route due to the heavy rain.  Among those responding to the WSAR callout were Hamnet members, ZU1MT Mathias, ZU1YZ Gela, ZU1JV Johan and JU1JM Johan. Gela took over base communications duty and Peter was appointed deputy incident commander and assumed on-scene command of the rescue.  Erich returned to base to run the computer mapping of the incident. The Skymed rescue helicopter was stood down due to the weather which was worsening again after a brief respite at lower altitudes. 

By this time there were 22 field rescuers in the field in various positions in 5 separate parties, making their way to the patient. A long and arduous stretcher carry was expected and the field party was being manned accordingly. They were supported by as many as 9 4x4's. A field command centre had been set up in Peter's Land Rover running 3 separate VHF nets and the positions of the field parties was being plotted on Oziexplorer on a laptop mounted in the Land Rover. Proper interior lighting ensured that the management effort could proceed without hitch as darkness fell. The use of the computer mapping proved invaluable in keeping track of the rescue parties and eventual progress off the mountain.

When the medical personnel arrived at patient 2, they managed to get her back on her feet.  They handed their packs over to Chris and Mark and, their load so lightened, manoeuvred the patient around to Bergriviernek which was more sheltered from the weather.  They were joined by two more rescuers, bringing the first of the equipment, including a stretcher and some more dry clothing.  At that position, the medics managed to warm the patient with active heating blankets.  Paul, Mark and Chris began extracting themselves from the mountain, passing three teams of mountain rescuers that were heading up to the patient to assist with possible stretcher carry and technical rope work over the swelling rivers.  An Oryx was put on standby at Ysterplaat Air Force Base and a technical rope specialist deployed to rig the Oryx for a short haul extraction.

Paul, Mark and Chris, accompanied by two rescuers eventually reached Langrivierkloof at around 7pm, which had been a gentle babbling brook 13 hours before, but which by this time was a thigh deep, raging white water torrent.  The rescue teams had roped the crossing on their way in and this enabled Paul, Mark and Chris to cross and reach the vehicles.

The other rescue teams reached the patient in due course and the medics had improved her condition enough to escort her down the mountain on foot.  The decision was made to exit via the escape route on the Panorama route. As a result, the Oryx was no longer deemed justified and it was stood down.  The rescuers had to periodically rope sections to cross rivers safely and eventually reached the base at approximately 8.30pm.

All-in-all 43 rescue personnel were involved from all branches of WSAR. 


Quotable quotes:
Paul van Spronsen (6.30am) to race control: "anybody not properly kitted and who finds themselves unable to run further will die!"

Allen Wood (8am) to Paul & Erich: "Gentlemen, this is not stuffing around weather."


73
ZS1PVS "


Pse comment !

Thursday, 28 July 2011

Elephant's Eye detour (Saturday 23rd July, 2011)

Approaching Elephant's Eye from the Silvermine side
Just a quick note on my SOTA activation of Constantiaberg Peak (ZS/WC 047) this last Saturday. I started at the Silvermine dam and did an counter clockwise route via Elephant's Eye, Constatiaberg Peak and Noordhoek Ridge (19km).

A closer look at the cave's entrance.
View from within the Elephant's Eye !






Friday, 22 July 2011

Kites......as a "sky hook"


 I use a Delta Sled single line kite that was initially put into service as a "sky hook" for supporting various antennas and soon discovered that it makes a very good platform for aerial photography !

My  'GoPro HD' camera hanging in a diy 'Picavet' which keeps the camera horizontal and very stable.

(Click on any pic for a larger image.)



These two pics ( a residential building site and the Koeberg Conference and Sports Centre) were taken with the above rig hanging approximately 60m above them.
(Click on any pic for a larger image.)

Wednesday, 20 July 2011

Constantiaberg Peak.... SOTA ZS/WC-047

SOTA actvation of Constantiaberg Peak 928m 

Constantiaberg peak is the second highest peak in the Table Mountain chain, Maclear's Beacon on Table Mountain being the highest. Dennis, Grant and I hiked up here to activate ZS/WC-047 in May, 2008.


We started at the dam in the Silvermine nature reserve, hiking up to Elephant's Eye,then further up to the peak itself, passing the transmitting mast on the way up. Our route down was via the steep South Western slope to the view point above Blackburn ravine and then onwards back to the parking lot at the dam.


(click on any pic to get a larger image)


Dennis, ZS1TC, and Grant dressed against the bitterly cold wind on top of the Constantiaberg.
 In the background are three SOTA  peaks (Upper Steenberg, Muizenberg and Kalkbay peaks)



Looking Eastwards over the Cape Flats and False Bay with the Hottentotsholand Mountain chain  and Cape Hangklip in the distant background.  In the center foreground is the "Sentek" TV and FM transmitting station. Out of site, just to the left of the camera, is the weather service's radar site.                                   












A portrait shot of myself on the North Western slopes of Constantiaberg with Houtbay fishing village and the Sentinel Peak in the background.






The three of us taking a well earned rest on the way down from the peak. ( taken from the same location as the previous pic)

QRP/Emergency Communications in the great outdoors (by KF8GR)

This is an extract from KF8GR / QRP web page ..........

QRP/Emergency Communications in the great outdoors

QRP operation in the wild is one of the best ways to renew the soul, increase your operating skill, make sure you have all the cables you need, and prepares you for operating under the most difficult conditions.
It is unfortunate that many hams think Field Day is the only training they need for emergency operations.  Field Day is the WORST training possible for emergency operations.  The entire design of Field Day is to get lid operators doing ANYTHING to run up the score.  If you doubt me, listen to the idiots trying to talk over the SSTV frequencies on any contesting weekend.  Now don't get me wrong, contesting CAN be a great way to get set up for emergency traffic handling, etc.  It is just not normally used that way, it is just the excuse used to contest.
Using a QRP rig, a laptop computer, and the best antenna setup you can find, and working on a day when no one even knows you are out there is how you test your true skills.  If you can fill a logbook from a rustic park or woodland setting, you can work emergency operations almost anywhere.  Every day you spend in the wild is a true test of your operating skill, band conditions, and camping knowledge.  Couple this with Adventure Radio, and man.... that's living.  Any jerk can spend a weekend in June pretending to be an emergency communicator.  As the good book says, by your works you shall be known.
If I have offended any hams, good.  Maybe they will get out and REALLY start to learn how to be an emergency communicator.  


"You are 60db over nine,
turn down your power, stupid!"

Monday, 18 July 2011

Noordhoek Peak ...... SOTA ZS/WC-055

Noordhoek Peak 123m



This video was shot on a cold, blustery and overcast morning.................. gale force winds and in heavy cloud !
( In the vid my 20m telescopic vertical on the left, the rock cairn, and Dennis erecting his 20m inverted "V" on the right. The wind is howling and the clouds are swirling around us)                      


 ( click on any pic to get a larger view )







Blowing in the wind while hanging onto a rock to keep my footing !










Dennis snuggled down behind a rock operating his radio. A FT 857D on top of a LDG tuner and a 7a/h gelcel next to it.







The wind has moderated and the cloud cover is starting to lift.  Over looking Hout Bay with the "Sentinel" and Karbonkelberg in the background.


The same view with the weather much improved, but still bloody cold  !



The following group of pictures were taken on my most recent hike up to Noordhoek Peak on the 12th of June, 2011. What a contrast, a perfect calm and warm day with a clear blue sky !


Iris, Gladioli' or Watsonia ? Waiting for ID

























An interesting rock with pools of water..........a perfect bird bath !











An "Orangebreasted Sunbird" perched on the stone cairn at Noordhoek Peak.  This little fella was very tame and looked happy to sit not more than two metres from me ! A number of "Cape Sugarbirds" were seen foraging(?) in the protea thickets but were too active to get any good pics.







A rather untidy outdoor radio shack !






The QSL (confirmation of contact) card I use for my Noordhoek Peak activations.

(note the QrangeBreasted Sunbird   perched on top of the cairn)









Chapman's Peak as seen from the beacon on the Southern end of the Noordhoek ridge.

jjj


Portable Hex beam




Sunday morning..........no wind, no rain and beautiful blue sky, a perfect day to test the portable hex beam that I have built over the last few days. A 20m mono-bander that will later be adapted for 15 and 10m bands as well.



For the tests today I pushed her up to about 5-6m on a un-stayed, glass fiber telescopic mast and was very happy with the results. An SWR of between 1.5 and 1.8 across 14.150 / 14.350mhz without any adjustments from the design specs. With a bit of trimming to the tip spacing I'm sure this can be improved to below 1.5 across the working range.

North American stations were heard at S7 to S8 consistently and the local noise level was about S2. Off the back of the beam these station could not be heard !

SARL QRP contest 16th July 2011

Another beautiful day down here in the Western Cape, a perfect opportunity to set up a field station on the beach.





I decided to use my RACAL PRM4051 rig with NVIS horizontal dipole and a long wire kite antenna.













Here the station with the horizontal antenna set up at about 2.1m high and just on last night's high tide level.
The kite shackled to the rig, I had to drop the long wire because of the static build-up .