RaDAR – Base camp communications

After an awesome lunch and a stroll around the area with the family they climbed into the car and went back home taking Eduan with them. That gave me some time to relax and play field day amateur radio from the comfort of our tent. In between I started packing leaving only what I needed to make a few contacts.

It was relatively easy making a few JT65 contacts on 10m and a CW contact with R120RD. The rest were 10m SSB contacts, something I don’t often do. It was fun though.

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Some points I’d like to mention. Firstly, the RaDAR spotting website was not used quite as much as we could have. Facebook was a fine medium with which to keep in touch.

I found the military B25 manpack to be an excellent RaDAR radio and the end fed antenna performed beyond expectations with this radio!

Many thanks to the hams that supported the RaDAR challenge in being active or just being on the other side. Without you guys such and exercise would be futile.

RaDAR teaches you new things with each deployment or exercise. It is a team sport. We all need each other to make it work.

The Easter weekend made it difficult for many to participate, throughout the world. We may have to look at a new date for the coming years.

Suggestions for RaDAR would be most welcome. Don’t wait till the day before the ops. RaDAR has come a long way, it is different but really great fun.

RaDAR is a game!

73 de Eddie ZS6BNE

RaDAR – The next excursion

After Eduan and I finished brunch and our comms admin was up to date, it was time to move out for the next true RaDAR operation. We only took the B25, 7 A/Hr SLAB and 40m fixed matched, end fed with us. I carried the kit and Eduan took on the role of “Captain”. He guided us through the bush and I had to bend down low to get through at times. Eventually we came to a place where he decided it was an ideal place to deploy our RaDAR station.

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We put up the end fed, but had lost a tent peg for the third guy rope. I left it near the back pack but these things disappear in a mm of sand! I used a nearby rock instead. I’d made a similar arrangement on a few occasions on top of a mountain. It works!

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Pieter, V51PJ had been monitoring the 40m RaDAR Calling frequency (SSB) on 7.090 MHz. He came back to our first call at midday. Then things were quiet and no one responded to our calls. I decided to do some “search and pounce” and broke into a net on 7.070 and worked ZS6TAN and Johan, ZR5JF.

I had posted a comms request on Facebook. When I went back to 7.090 MHz, there was Nico, ZS4N and John, ZS6BNS in conversation waiting for a call from our RaDAR Station in the field. We passed the required info which completed five contacts and allowed us to move position and go to lunch. I had in the meantime SMS’d Elrika, my wife and asked them to pay us a visit at “base camp”. She said they were on their way and were bringing burgers through for lunch!

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Gary, ZS6YI also called us on 7.090 MHz. He had a very high SWR but was there to give us a QSO. We exchanged info but I could not claim “points” for the contact as I already had five and had not moved the required distance yet. This highlights what RaDAR is, various amateur radio stations assisting moving RaDAR stations with the required number of contacts in order to move. It is not a race.

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Eduan and I packed up rather quickly having practised on the previous operation and made our way back to “base camp”. We waited for our guests and I completed some comms admin in the meantime.

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To be continued ….. “Base camp communications”

RaDAR – The RaDAR Challenge True RaDAR

All that had been done since the RaDAR Challenge started was similar to most amateur radio field day operations. It was time for doing some real RaDAR stuff. This would be something that young Eduan would enjoy doing. He’d been looking forward to this opportunity the whole week!

We took two backpacks along, one carrying his military Fuchs B25 manpack and a open wire fed , random length dipole. He also took his “painters pole” mast along. His kit was heavy but he insisted on carrying it. I took my standard kit, the FT817ND and 40m, fixed tuned, end fed and my dual painter pole RaDAR mast. I carried a 7 A/Hr SLAB too.

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After walking a kilometer, we found a place to set up station. We used a large rock on which to place the B25 and battery. I was hoping his antenna would work so we got it up into the air but had no success. The B25’s ATU could not load the antenna. Time was running out so we took it down and I put up my 40m, fixed tuned, end fed and painters pole mast. There was a short length of RG58cu cable between the matching unit and the B25. I’d never tried this configuration before.

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Around 09:38 we made contact with Rudi, ZS6DX and ten minutes later contact with Pieter, V51PJ. This was an awesome QSO with Pieter as we have been battling for a very long time to have a conversation via HF. Conditions were never favourable. Now this is what makes RaDAR special. We needed three further contacts before we could move position. Pieter notified other hams via 6m and asked them to come onto 7.090 MHz. Eduan was already getting hungry. A full count of 5 QSO’s would allow us to continue. Gert, ZS6GAS called us just after 10:00 local time. We still needed two QSO’s, Eduan now quite agitated, he started jumping between the rocks to pass the time. Then we got a call from David, ZS1DAV and Nico ZS4N.

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It’s worth noting that the RaDAR challenge is different to any other competitive amateur radio activity in that instead of competing against each other, we support each other to reach the goal. Being on foot, scored us 3 ponts per contact. The points are there simply as a measurement of personal goals during any RaDAR Challenge. Points can be compared with other participants to identify ways for personal improvement and the evolution of RaDAR itself.

We packed the kit, made our way to “base camp” and enjoyed a good brunch!

To be continued …. “The next excursion”

RaDAR – The April 2015 RaDAR Challenge

I woke up at around 01:30 local time and found little Eduan was no longer in his original sleeping position, he had shifted all around the tent floor. There was a slight downhill. I helped him get comfortable and back onto the blanket protecting him from the cold. It was overcast outside so it wasn’t too cold.

I powered up the FT-847, activated my smartphone hotspot using the Android app, Airdroid. The netbook was connected to the Internet and I logged into Facebook,  Google+ and the RaDAR spotting website at http://www.cwfun.org/funspots/kx3/frames.html

Forty meters was not good for local contacts that time of morning and I went to 80m and loaded the ZS6BKW open wire fed multiband antenna. The FC-20 automatic ATU battled to get a low SWR. It wasn’t good but I was able to transmit at full power, 100W. I had been using the spotting site and Facebook to arrange skeds with Jaco, ZR6CMG and Kevin, ZS6KMD. We could make contact on 80m, Jaco was 59+ 20 and he gave me a 59+ 40 not too bad for a high SWR antenna! Kevin’s signals were not quite as strong, I gave him a 51 and he gave me a 53. We exchanged grid locators and all the required information between RaDAR stations.

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No one else was active anywhere so Kevin and I agreed to get some sleep and try again at sunrise. The sleep was welcome! I woke up again just after sunrise and looked for more contacts. I found Theo, ZS6TVB and Rudi, ZS6DX on 7.090 MHz and we exhanged contact information. All signals were 59. The BKW was performing well!

Theo and I tried PSK31 on 7.040 MHz and we both made our first digital RaDAR contact and “scored” bonus points. That was it as far as local QSO’s were concerned.

Just after eight o’ clock I tried JT65 on 10m and made contact with FR1GV. I forgot to save the WSJT-X contact log! What’s nice about JT65 operations is that you get just about an instantaneous QSL via e-QSL. Awesome!

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That was pretty much it and it was time to do real RaDAR and Eduan and I packed our bags and did a quick kit check before moving out.

To be continued ….. “The RaDAR Challenge True RaDAR”

RaDAR – CQ RaDAR Worldwide

It was late Friday afternoon, the car was packed and the mental checklist was ticked off (I made a paper one too). Eduan and I needed to get to the RaDAR “Ops area” before dark, a drive of about 35 km from town. It is a dangerous stretch of road where cattle and horses roam freely in search of grass to eat, ever more difficult with the winter in sight.

The purpose of the ops was the April RaDAR Challenge with world wide participation. I had my plan of action in mind and a dual purpose, spending time with my grandson and introducing him to the operational side of RaDAR which he has seen me do on numerous occasions. This was the real thing!

We set up “base camp” starting by deploying the well known ZS6BKW multiband antenna in an open stretch of grass. The mast was the well known South African “Eskom pole”, a telescopic fibreglass pole used to work with high voltage power lines. Some are rejected for their purpose but make ideal masts for amateur radio!

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With the antenna deployed and the feed point position defined, it was time to put up the five man tent. I orientated the door in line with the feed point that it be easy to feed the coax through even with the door zipped closed. We put a fold up table inside that would make a comfortable operation position for our RaDAR Field station. There was a 220 v a.c. power point nearby and I laid a long power cable to the tent. This may sound strange to the field day purists, RaDAR operators take advantage of everything at their disposal – a real life simulation. I did have a standby 18 A/Hr SLAB in the event that we may experience “Load shedding”, a real problem in South Africa. Fortunately none came so we had power throughout the ops period for our field station. I set up the radios and connected all the cables. On my to do list, building it all into a flight case that deployments are quicker.

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I used my smartphone as an WiFi Internet hotspot and so I had an Internet connection on my Netbook to be able to access the SARL Forum, Facebook, Google+ and the RaDAR Spotting website. These websites proved invaluable during the RaDAR Challenge for giving feedback, promotion and spotting.

Eduan and I watched TV while we ate a few snacks. It started getting late so we switched off the TV and went to sleep. 02:00 local time (00:00 UTC) would be the start of the 24 Hour RaDAR Challenge. According to VOACAP only much later the next morning would there be the slightest chance of working Jack VK4JRC in Australia.

To be continued, “The April 2015 RaDAR Challenge” …..

RaDAR – Get ready for the new challenge

Click on the images for a larger display.

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A guide for moving RaDAR stations.

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A suggested log format. Fixed and portable stations can use the full sheet/s. Moving stations however may need to use a new sheet for each new deployment after making 5 QSO’s.

Don’t forget to take a photo of your station at each deployment position.

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Have fun!

RaDAR – 10m loop antenna

20mm PVC conduit as spreaders.

ZS6BNE Bungi shock.

Makeshift “Tensioner”.

Facing north – worked

15:58 CAT worked EA8CN on 10m CW @ 5W (Loop)

The wires can be removed from the spreaders and rolled up.

73 de Eddie
Rapid Deployment Amateur Radio

Daring to be different