Background – Double summit.

Some of you may recognise the name of this summit from my previous reports. Berndorfer Buchet is a current SOTA and a current HEMA summit. How can this happen? Well HEMA strictly adheres to its rule of including only summits with a prominence greater than 100 metres and less than 150 metres. For historical reasons, SOTA summits are not always over the SOTA rule of a minimum of 150m prominence.  

Preparation:

This activation would be the first activation of a summit in the HEMA Southern Bavaria Central region and I wanted to get out to see what conditions were like portable into VK, early morning (around 0800 UTC). While a group of us had been making contact from home around this time, I seemed to be getting a far better report from Ernie VK3DET, than I was giving him. I have checked antennas and equipment and we are both running about the same power level. Ernie has a 3 element beam and I am only using a wire sky-loop antenna but none of this really explained the difference. I had also looked into whether the use of different antenna types, could cause the angle of incidence to the Ionosphere to be different and hence change the skip distance and coverage area at each end. Perhaps man-made noise levels could be the cause? The portable operation would be another research action. If I were to be able to work Ernie, this would be with an even simpler dipole antenna not far off the ground sending signals to Ernie’s 20m Yagi beam.

The weather had been extremely cold of late and was staying that way, so the early start needed for the radio window to Australia would be a test of my fortitude as well as a test for the equipment!

As usual, I packed the one rucksack full of equipment into the back of the car the night before the activation, so I could get an early start.

The Activation

The trip to the car parking spot for the summit was uneventful. It took around 35 minutes from my home.

On arrival, I could see that a lot of tree-felling had been done and the logs were pilled up ready for collection. Unfortunately, the track that I walked up to the summit was quite a mess, hopefully, the forestry people will repair it after they take the wood out. I had packed my screw-in sun-umbrella base on the side of the rucksack and this was the first thing to be unpacked on the summit. I screwed it into the same old tree trunk remains that I have used for the last five years. Next was the 6-metre fibreglass mast and linked dipole, with the links set for 20m as I had planned to only operate on 20m so that I would not need to be on the summit longer than needed.

Sending a quick note via the Signal app, which serves as our “back-channel” when we test, Ernie was there straight away in response to my CQ call. We exchanged 58 / 56 reports for this 24,000 km / 15,000 mile SSB contact via long path.  The 13 dB difference in power levels (I was using 20w, Ernie 400w) matches the 2-S point difference in reported signals. So this seems to confirm the point about the received noise level causing the imbalance in reports from the home location. After Ernie, I worked Keith, an ex-Pat Brit living in Bulgaria with the call LZ4DJ and Christos SV2OXS from Greece. Although spotted on the HEMA & DX Clusters I received no calls from the UK and Mike 2E0YYY using the Hack Green SDR could not hear me at all. The 20m band was obviously “running long” as normally I would get calls from the UK. I hadn’t planned to, but as I was still missing one contact to qualify the summit, I took the antenna down and switched the links to 40m where I bagged another three contacts reasonably easily.

The over-bearing problem on this activation was not the equipment, nor the propagation but rather the weather. When I decided to go QRT at 0900 UTC it was still minus 3 degrees centigrade and there was an icy wind starting. In these conditions, the best action is to close down and head back to the car, which I did.

 Photos:

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Equipment used:

• Mountaintop travelling 40-litre rucksack.
• Xiegu G90.
• Komunica Power HF-Pro2-PLUS-T loaded vertical antenna. (not used)
• Modified mini photo tripod with clip-on radials (not used)
• Lamdahalbe 6m mini-mast.
• Screw-in sun umbrella support.
• SotaBeams linked dipole.
• Battery box (2 x 5000maH hard-case 4S LIPOs).
• 4000maH LiHV battery (not used).
• Painters thick plastic sheet.
• Lightweight headphones.
• Smartphone to spot and back-channel comms. 

Logs:

HEMA

SOTA

 

Conclusions:

• The weather was on the borderline of dangerously cold and if this hadn’t been a summit that I know well, I may well have cancelled. Learning – know your limits and be prepared to shut down and go home earlier than planned.
• It does seem that the reason that I can not give Ernie as good a report at my home station as he gives me, is the local noise level. Ernie is out on a farm where I live in a modern village. So electrical QRM is likely to get worse rather than better!
• I was really happy with the contact with Ernie VK3DET – it just shows what a portable location can provide if you are there at the right time, even with low power.
• No comments on the equipment – everything worked as it should including the Xiegu G90 radio which continues to perform well, especially on receive.

73 ’til the next summit, be it HEMA or SOTA – or perhaps BOTH again?