Zulu Sierra Two Delta Hotel

Tag: Hamnet

Baakens River Comms Check 2021

The Baakens River runs through the heart of Port Elizabeth. Well I like to think so – it runs through my part of Port Elizabeth.

Our entry point beacon VKE-9A
Our entry point – beacon VKE-19A

The Guineafowl Trail as the “Baakens River Parkway” is better know is a series of paths (and yes, mountain bike routes) through the valley once famous for flooding and having the odd caravan bobbing down the river!

HAMNET Eastern Cape, under the watchful eye of Andrew Gray ZS2G decided to put up a temporary JOC and send a walking party through the deepest part of the parkway to establish UHF communications and VHF fall back positions for communications from inside the river valley.

The 1st Walmer Scout Group has the container (now affectionately know as the Jam Tin) which provides a very good base for operations, but we needed to be infrastructure independent as so the GV special was deployed.

ZR2BK with ZU2NX, ZS2GV, and ZS2G in the front.

The GV special is a field-deploy-able mobile repeater with a number of features that make it a great option for this sort of activity. It has a UHF repeater (complete with 7.6MHz split – not a cross band!) with a VHF leg as well. Operating on 438.650 (as the repeater’s TX frequency) and as a short range simplex frequency meant we could get communications through to the JOC in a number of ways. The VHF leg added another band to the mix and proved the bands are not equal. There were places VHF trumped UHF and there ere places VHF was just not worth having 🙂

We met at the Walmer Scout Hall at 1:30pm SAST and after a brief note from the boss, we set off to do a variety of signal checks before returning to the hall to enjoy a braai and some eyeball QSOs.

Some of the people were mobile and covered a large area of Port Elizabeth from the beachfront inland near Newton Park. Patsy ZS2PTY, Werner ZS2WS, Gert ZS2GS, Andre ZS2ZA, and Mike ZS2MIC were mobile driving around town and calling in to the repeater at JOC.

JOC was manned by Tony ZR2TX, Mandy (the birthday girl!) ZS2AV, and Shaun ZS2SG. JOC was located at the south end of Mill Park Road – KF26TA07UU.

The walking team who made their way through the valley on foot were Andrew ZS2G, Keverne ZR2BK, Glen ZS2GV, Nicole ZU2NX, and yours truly ZS2DH.

After setting up the JOC the walking team were dropped off behind the Linkside School where we entered the valley. The gate behind the school is located at KF26SA98FK.

A short walk from the gate brings you to the entry point for our exercise – the VKE-19A beacon located just west of Dodds Farm.

Various checkpoints were logged with communications to the JOC from 14:47 at KF26SA98FK through KF26SA97IW (the beacon at our entry point) down to the first water crossing at KF26SA97GT.

We then walked up river from pool to pool doing communications checks as needed. KF26SA87QT and KF26SA88KH (could be a campsite here). We then started to climb out the valley towards the north. KF26SA88DL is a good outlook point with a view over the valley towards the third avenue dip exit.

We exited the valley at Dorothy Road (KF26SA79OB).

JOC coordinated a lift for the walking group who were then taken back to JOC. JOC went QRT and we all made our way back to the Scout Hall where ZS2JIM had the fires going. A few interested parties had arrived to join in the festivities.

Our exit point in Dorothy Road.

Among the interested guests was Bevan ZS2RL, Damien ZS2DLF and his family and Wendy (XYL of ZS2SG) joined us.

ZS2G sponsored a lucky draw of a mobile antenna which went to Shaun ZS2SG – well done Shaun!

The exercise was to identify communication problems in the area and that task was completed, logs made and a lot was learned. That said, it was hardly work – we all had fun and the braai made it awesome.

Running a Hamnet exercise

I have a gift – or a curse, I’m not sure.  As a software engineer, it is my job to simplify tasks and provide efficient solutions to what I like to call “real world problems”.   I am not a technical person and many can’t understand this.  Let me explain.

Whether it is electricity, gas, cars, or anything along those lines, I tend to battle a lot more than people would expect.  Until I explain that I live in a world where anything is possible – if it does not already exist, I make it.  So when I ask if a penlight battery can power an HF rig for a 24 hour field station people just laugh.  In my mind I can’t understand why they simply don’t just make a penlight battery with that capability – I would if you could code it!

So you can’t code batteries and other “real world problems” but several decades of “inventive engineering” can make you expect things 🙂

Ok, so what does this have to do with a national Hamnet exercise?  Well I wrote a small web application on one of our test servers at the salt mine and with that managed to keep 11 teams around the country busy sending messages on HF and VHF for a full 24 hours period.  The script is available to anyone who would like to run a similar event – just yell and I’ll help where I can.

Basically it involved generating a bunch of messages (I needed about 357, but shortened it to 342 final tally).  The desired message rate was “2-3 message per hour, with about the same coming in“.  So I kept the teams in order for outbound messages, but randomised the message destination team so there was no pattern to make it boring.  I then sent a message off every 4 minutes.  This meant a team would get an out bound message every 44 minutes and this seemes to have done the trick.

Generating 350 messages also sounds like a hugh task – but being fundamentally lazy I found an easy way – a sort of “mail merge” so you can make a missing persons report where the detail such as race, gender, age, height, weight, and when/where they went missing is all pulled in from random text files.  Super easy to use and once again – available for free to anyone who would like to use it.

So, in short, running someting like this is not a big deal.  But it was fun and inspiring – hearing the people, 23 and a half hours into the event asking if we could carry on since they were still having fun – priceless!  Radio hams are all nice friendly people and the underlying courtesy and professionalism came shining through.

Some of the challenges included battery power, lighting, and heating!  While the Limpopo was mild, the Free State was freezing!  I would like to be a part of something like this again in the future and wonder if I could stand the cold like they did?

The basic plan

Teams were tasked with setting up a VHF team with internet access (to get messages to send and to log the messages received) and a HF team with good comms to relay messages.  This meant that each message followed at least a VHF->HF->VHF path but a large number needed to be relayed so even more hands were involved.  A great deal of message sending and good practice.

 

Hamnet/Hammies Field Station in the Flower Reserve

25 June 2016

Van Stadens flower reserve

The weekend of the 25th of June fell squarely in the middle of the SARL Top Band QSO party and overlapped with our plans to deploy for the Top Band QSO party. It also clashed with another of the ZS2Fun projects – Hammies. As if that was not enough, it was also Andrew’s turn to read the PEARS news bulletin on Sunday morning, so a full weekend!

Not to be deterred, however, a plan was made to operate a field station from the famous Van Stadens Flower Reserve during the normal Hammies time slot – 14:00 to 16:00 SAST on the Saturday.

Having never actually been to the flower reserve myself I was looking forward to it. Incidentally, this is only a few Km from the venue we used for the “Hamnet Blackout” last year.

Living in town has it’s disadvantages from a ham perspective and one of the main disadvantages is the electrical noise. Andrew and I both have S-9 level noise at our respective QTHs. In the Van Stadens area this drops away a lot! So much so, that when Andrew set the radio up he thought it was broken until we found a talking station!

ZS2DH operating the field station.

ZS2DH operating the field station.

The plan to get out there and set up for a 14:00 start was thwarted somewhat with a variety of challenges, but we managed to be on the air by 14:10 SAST. Setting up the “SOTA-style” station was nothing new to us and even the Hammies can do it with their eyes closed now. The inverted-V hanging from an “improved commercial swimming pool mast”-about 6m off the ground, the Kenwood TS-50 running off the good old faithful 100AH battery and we were on air pumping out about 80W of Hamnet Awesomeness!

The Hammies had come along as well and Ashton, in particular, needed to run around a bit. Andrew set up the GPS points and hid some point markers. The Hammies were given the coordinates, along with a brief explanation of how the GPS works, and told to get the code words which had been hidden with the point markers. They had to radio these back to “base control” as they found them. This was a great activity for the Hammies as they got to report over the radio, but also explore the reserve and improve their mountain rescue skills. We had to eventually cut the activity short as the park was closing and we had to get back to town! This proved even more popular than the fox hunt we did some time ago.

Andrew running the field station

Andrew running the field station

Taking turns between operating the field station, operating “base control”,and chatting to our guests, kept us all busy. Juanita and Thato (one of Andrew’s students from work who had joined us for the day) were a great help. I think they enjoyed it at least as much as the kids did – if the laughter was to be believed!

Our guests included a few passing tourists and Treffor Lloyd from the Mountain Club Search and Rescue team.

Our field station made a good impression too – hitting ZS1 through ZS6 as well as making contact with Athol Masdoll, Z21LV in Zimbabwe, Vince, 3DA0VV in Swaziland, and Dieter Hoffman, A25RX, a local lad currently working in Botswana.

Naturally, as man cannot live on radio alone, we had a fully catered service with tea, coffee, hot chocolate, cooldrink, and biscuits. By the time we had to leave, there were still some supplies, but the cooldrink and biscuits just seemed to have evaporated!

In short, we got out into the open air, played radio, practised our skills, gave the Hammies a good afternoon of fun, and all went home a little more tired.

Some of our guests - Treffor Lloyd and Gert (ZS2GS)

Our guest – Treffor Lloyd and Gert (ZS2GS) and Andrew (ZS2G)

The Hammies with the Hamnet guys

The Hammies with the Hamnet guys

No, I’m not dead!

I realise that I have not posted much in a while, ok – quite a while!  But I have been doing so on the ZS2FUN page.

Here are some articles you might like:

A report on a Hogsback expedition in February and the Hamnet 40m contest in March.

I am also actively involved in getting the local Hammies off the ground.

You can read about the Hammies first meeting, our field station and our visit to the PEARS repeater!

I have also been doing some more DXing with Andrew Gray (ZS2G) and this now includes the following entities:
SOUTH SANDWICH ISLANDS
SOUTH GEORGIA ISLAND
GABON
GUERNSEY
JUAN DE NOVA, EUROPA

with VKOEK yet to QSL.  Not much, but some pretty good ones 😉

I also worked Bruce Salt on St Helena, but unfortunatly Bruce does not QSL on LOTW.  You can read about it here in an article about how Mandy worked a SOTA pileup!

So, I’m not dead – thanks to all those worried soles who thought I was 😉

Hamnet Blackout – 2015

The Hamnet Blackout (24-25 October 2015) was a highlight of my Radio Ham year.  Enough said!

We plotted, we planned, we schemed, and everything fell into place.  Well done Andrew Gray for organising a wonderfully successful outing.

The Voortrekker Camp Ground – becoming a favourite site for Radio Hams due to its quiet, pleasant surroundings, was the venue.  We arrived just after 8am and started opening up the hall, turning on the gas and water, and setting up some tables.  There is no Eskom power at the site (ever – not just during load shedding!) so we were not able to “cheat” in any way.

We had a few interested peeps who came to watch us and help arrange things.  I think next year might have quite a following – and perhaps even an extra division 2 team!

All setup and on the air at 12 noon.  we had reasonable comms on 30m and 40m with 80m in the darker hours.  We used a dipole for 20/40m on one radio and the other was connected to an off-center fed dipole brought by John (ZS2GB).

As for masts, sorry there is no nice way to say this, but “Mine was the biggest” 🙂

We arranged a generator from the 1st Walmer Scout Group and that pretty much was all we needed.  When we turned off the generator we operated by (solar) lamps – thanks to Colin (ZR2CRS).

The big challenge was to be “Off the grid” for the full 24 hour period.  With no ESKOM power available, you would think we could manage.  Well, we could not cook “off-grid”. We braai’d on a grid 🙂

Coffee and food constantly available thanks to our team chef Jimmy de Scande – who also doubled as the team photographer.  Thank you Jimmy!

When Jimmy says “Ons gaan no braai” you must know you are going to eat well.  And boy did we eat some top class steak!  Enough for hungry hams and their breakfast too!

We had 3-hourly contacts with most of the teams nationwide.  A few that did not make it all the way, but as a whole I’d have to say it worked well.  If we ever had a serious reason to do it I believe we are capable.

What the exercise showed me was that if we all play nicely we can all have a turn (yeah mom, I know you said that before!).  So often we try to get through at the expense of other stations (and us QRP mobile SOTA stations usually get the boot).  When we all play nicely we all win.

The morning was as glorious a day as the Saturday.  Weather was not wonderful, but the company was top notch!  A few more visitors popped in – proving that we were waking the dead – well ok, it is not that bad.  I am sure there will be more people available for the next event.

As an aside to the main story – I made some new friends just prior to the exercise – the fine folks of ZS1FUN.  Well they were there and we had a chat.  That is where ZS2FUN was started.

ZS2GV holding the mast.

ZS2GV holding the mast.

ZS2GV helping out the new guy.

ZS2GV helping out the new guy.

ZR2CRS hard at work.

ZR2CRS hard at work.

Me looking busy :)

Me looking busy 🙂

ZS2DH, ZS2G, ZS2GB, ZR2CRS (Jimmy behind the camera)

ZS2DH, ZS2G, ZS2GB, ZR2CRS (Jimmy behind the camera)

Andrew Gray - ZS2G

Andrew Gray – ZS2G

John (ZS2GB) setting up the dipole.

John (ZS2GB) setting up the dipole.

Hear no evil, see no evil, do no evil.

Hear no evil, see no evil, do no evil.

Do you see how much I had to work!

Do you see how much I had to work!

Operating by lamp light.

Operating by lamp light.

That is why he gets the big bucks!

That is why he gets the big bucks!

A stunning sunset.

A stunning sunset.

Voortrekker Camping Ground.

Voortrekker Camping Ground.

Voortrekker Camping Ground.

Voortrekker Camping Ground.

Voortrekker Camping Ground.

Voortrekker Camping Ground.

The famous Van Staadens Narrow Guage Bridge.

The famous Van Staadens Narrow Guage Bridge.

The famous Van Staadens Narrow Guage Bridge.

The famous Van Staadens Narrow Guage Bridge.

My first contest: Hamnet 2015

What a lot of fun!

Wow, I just had a lot of fun!   My first contest – and I really never thought I’d like it, but I did.  Thanks Al!

I ran a portable station (my normal SOTA setup) running my X1M off a 7AHr battery and blasting out 5 watts off my dipole pitched with a swimming pool net handle.  I little extra luxury – I had a table and an camp chair.

I realise the guru’s out there may think this is silly – I only made 5 contacts, but I’ll bet mine was the first log submitted – yes mine is already in 😉

I still have a lot to learn, but really enjoyed today.  I now need to analyse what I did and how it worked and then improve on it next time.

Thanks to the organisers.  And in the (immortal) words of Arnie “I’ll be back!”

 

73,

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