Category: Contesting

Building and measuring the 2el 160m Array

Last weekend we spend quite some time to prepare our contest station ED1R for the upcoming CQWW 160m contests. The biggest task was the installation of a 2el parasitic Array of two verticals. During the installation I took the time to document the measurement results. Find them with my (preliminary) conculsion in this blog post.

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W7IUV Beverage Pre-Amp (2N5109)

In preparation of the upcoming CQWW 160m Contests my friend Hannes, DK1NO was so kind to give me one of his W7IUV broadband, high IP3 preamplifier. Thanks, Hannes! Without knowing the exact performance data, I ran a few measurements with my Network Analyzer on the amplifier to determine the Gain and it’s operational fitness. Read on for measurement results and additional notes on how to measure active components.

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2el Vertical Array for 160m

In CQWW 160m we are planning again a serious participation. This time we want to errect a 2el vertical Array for 160m towards the US. In this post you will find some detailes regarding our unique situation and some design thoughts.

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HC2/AL1O qrv from Ecuador

 During my stay in Ecuador I was able to operate two days under my US Callsign as HC2/AL1O. Special thanks to my host Alberto, HC2AQ who offered me his shack. Within two days, 1700 QSOs found their way into the log.

 Read on for pictures, online log & QSL information.

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How to exchange the GU74b / 4CX800 tubes on your Alpha91b (Alpha99) Amplifier

it finally happend…. After a decade of reliable service, my Alpha91b amplifier broke. Most likely on it’s way to Spain one of the tubes broke. During the comissioning at ED1R contest station, fire & smoke shot out of a chimney. The first shock was big, but a few measurements confirmed that just the tubes were broken. In this blog post I will share the knowledge I gained during during debugging, comissioning and breathing new life into the amplifier.

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When antennas come down

During CQWW CW we had a shootout from ED1R with our friends from the Bavarian Contest Club. The group around DQ4W organized a Contest-Expedition to Corsica (TK) to get on the air as TK4W. Considering the available antennas, (two A3S, and three verticals) they generated a great score. For details comparisons between ED1R and TK4W click here.

Ulf, DK5TX created a serious of cool stop motion videos of the antenna work. Unfortunately, including the moment when one of the 17m tall masts came down and damaged the mounted A3S severely.

Fortunately nobody was injured and the A3S still worked, even being a bit deformed.

A73A in CQWW SSB 2011

A73A QSL CardThis year I had to honor to be invited by the Qatar Amateur Radio Society (QARS) to operate the CQ WW SSB contest with them. The station set up in a fieldday style on the northern tip of Qatar, about 100km way from the capital Doha. We are directly located at the beach and used almost exclusively vertical antennas. A73A entered in the category Multi Operator / Multi Transmittors, running 6 Stations in parallel. Keep on reading for some pictures and lessons learned.

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WRTC 2014 Promotion Video

Thanks to Al, 4L5A @contesting_atru for sharing this link with us in his twitter stream. It’s a WRTC 2014 promotion video created my nobody less than James, 9V1YC. Enjoy & don’t forget to donate!

It’s time to get serious!

Link: Trailer DK0ES VHF Contest May 2011

Headsets & Bob Heil’s Story

Bob Heil K9EIDDo you own a Heil headset and have you ever wondered about the story behind Heil Sound? Then this might be of your interest!

While thinking about upgrading my sound equipment to a Heil PR-40 microphone I stumbled over a 15 minute long interview with Bob Heil, K9EID the founder and CEO of Heil Sound, which you should listen to. Continue Reading »

VP8ORK Dinner in Buenos Aires

VP8ORK LogoA few days ago I had the honor to be invited for dinner with the VP8ORK Microlite DX-Pedition Team. Before leaving from Ushuaia, southern Argentina towards the Islands of South Orkney the team assembled itself in Buenos Aires. Thanks to the LUCG (LU Contest Group) and especially the help of Claudio, LU7DW we had a fantastic barbecue in one of the famous “parrillas” of Buenos Aires. While writing this, the VP8ORK is already QRV. If you haven’t worked them yet, go and give them a call. Here are a few pictures of this evening:

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OZ1AA Cycling around the world

A couple of days ago my friend & fellow contester Thomas, OZ1AA left Denmark on his bycicle towards the amazing destiny of Sydney, Australia. Thomas has currently reached the Ukraine. thomas will cycle through countries like Syria, India, Ethiopia, Sudan and Djibuti, just to name the most “interesting” ones.

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Presentation: How new technologies affect the art of contesting

Contest University LogoLast weekend I was invited to speak at the Contest Universtity in Friedrichshafen, Germany. This year I tried to visualize a rather abstract topic, the influence of technologies on the art of contesting.

Mainly two topics are discussed: Information Management and Software Defined Radios.

Do you like this presentation? Please leave a comment and share your opinion with us!

Survey Results

Survey / Vote on ARRL's decision on DA0HQ and URE disputeThe Contest Community has voted. Almost 500 contesters particpated in the survey on ARRL’s recent decisions. As promised, I’m providing the results one day after the survey’s end for further discussion. Some of the answers are very clear, other’s should be refined. However here are the results without any interpretation or censorship. Take them, build your opinion and share your thoughts with us!

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Survey on ARRL’s IARU Contest Decisions

Vote ARRL Decision on URE / DA0HQ disputeYesterday I received an overwhelming amount of replies on my personal opinion about ARRL’s IARU Contest decisions. Fellow contester agreed, disagreed and expressed their own opinions. The amount of replies is a proof that our contest community takes this discussion serious. However, it is unclear if these personal opinions are representative for our whole contest community. Now, I would like to take this Question on another level. I just created an Online-Survey / Poll. It takes less than two minutes to answer all Questions! Please participate and spread the word! Your vote counts!

The Survey can be accessed through this link:

http://www.surveygizmo.com/s3/312520/ARRL-IARU-Contest-Decisions

The Survey will be online for three days until Tuesday, 15th of June 2010 – 23:59 UTC. I will publish the results the day after on Wednesday 16th of June.