Introduction Contestový by OM0A OM0A CQ WW DX Contest SSB 2020

OM0A CQ WW DX Contest SSB 2020

Yaesu FT-1000mp-SDR

It is possible to contest without a mast and a proper antenna? This is an article, which I definitely do not recommend to owners of quality antenna systems and large output stages.

How to start planning a contest, which was not planned

It started weeks earlier, when Oliver OM0RX started asking about it, how to participate in the CQ WW DX Contest at SSB and possibly CW. Because my QTH currently looks like a construction site, so I didn't take it very seriously. I underestimated his desire to contest, because as the race date approached, so he was reminded more and more often.

Upcoming mast RDM-12
Upcoming mast RDM-12

During the summer, I started preparing a mast from RDM-12. I sharpened it all, painted with primer (2x) and top (2x) and he wished, lest I make up such nonsense. It is very laborious and access to the inside of the mast is difficult for a steel brush or grinding wheels.. In addition, five pits were excavated. Fortunately, no longer by hand! Three already have anchor pipes concreted, one not yet. The main pit remains with a supporting structure and a lifting mechanism.

Emergency antenna

And since behind the house the garden is still being leveled, so Shrek's Swamp is a more pleasant place. But the word gave the word and I decided to add Diamond W-8010 antenna for a second set of arms, to make it available 5 band. Of course it didn't go well and it took two more evenings, while I tuned the antenna to each band.

 

Diamond Antenna W-8010
Diamond Antenna W-8010

My setup is quite classic, Yaesu FT-1000MP. I also have a homemade SDR panadapter and CAT connection via MicroHAM to a computer with a proven N1MM + logo. Because many things are still being done inside the house and the smallest HAM recently had a year, so we agreed, that it will be broadcast from the technical room. Transferring a desk there required the assistance of a screwdriver and an Allen key, but after a small match, the table was in place and the whole setup was involved the night before the contest.

Oliver OM0RX pred CQ WW contestom
Oliver OM0RX pred CQ WW contestom

Start of the CQ WW DX Contest 2020

Oliver started the race, OM0RX. In the morning, I just evaluated how he was doing or not. It's not funny, The W-8010 has a width of about 30 kHz in the 80m band. We pulled it through the tuner as much as we could. The Japanese designers shook hands with the Japanese antenna and stretched it around 160 kHz. Paradoxically, it also broadcast quite decently.

Comparison of ED1B and OM0A on the 10m band in the CQWW Contest 2020
Comparison of ED1B and OM0A on the 10m band in the CQWW Contest 2020

The signals in the higher bands were as auroral in color on Saturday morning. And of course, for most of them, 100W was not enough for that piece of wire. In the morning, however, the stations also showed up on the 10m band. The lesson spoke, that any such connection should be used, because the band may no longer be opened at all. On the whole, it went slowly on this band. It is strange to contest without the need to rotate the antenna. It will either pass or not. Although at DXm it was not possible to produce any DX stations (nieto NA), but a few dozen connections pleased him.

However, a little more unpleasant turned out to be 15m. Nevertheless, this band gives room to make a DX connection and obtain a valuable multiplier. Whether you hear UA9, JA or W station does not mean, that it can be invoked on them! Many other contestants have the same goal, who mostly use more efficient antennas or more power!

Comparison of ED1B and OM0A on the 15m band in the CQWW Contest 2020
Comparison of ED1B and OM0A on the 15m band in the CQWW Contest 2020

Selection of contest category

Why I don't like the multi-single category? For a 10-minute rule. I have seen many diaries in this category and have been violated many times. That's what he says, that in another band it is possible to make a connection only with respect to the multiplier. Well, let's say I make four connections there, so I reach the average 0,4 QSO / minute while I'm on 10 minutes "closed" without the possibility to increase this number in another band!

Comparison of ED1B and OM0A on the 20m band in the CQWW Contest 2020
Comparison of ED1B and OM0A on the 20m band in the CQWW Contest 2020

On the other hand, it is a challenge. The challenge is to know how to select the correct band or just "bounce" the multiplier. Only that bounce can last too 5 minutes (remember low power and weak antenna).

Comparison of ED1B and OM0A on the 80m band in the CQWW Contest 2020
Comparison of ED1B and OM0A on the 80m band in the CQWW Contest 2020

Oliver took over the night shifts in the lower bands, for which he deserves thanks. Without it, such a continuous broadcast would not be possible. Although it does not die during the contest, does not give birth or marry, but still there is a family around you and a 1-year-old radio amateur also wants to broadcast 🙂

Comparison of ED1B and OM0A on the 40m band in the CQWW Contest 2020
Comparison of ED1B and OM0A on the 40m band in the CQWW Contest 2020

Násobiče, multipliers, multipliers!

The next day, we focused our efforts on raising the score at the expense of the connection. It meant invoking multipliers. What a joy to do NA at 15m! Or VY2ZM in pile-up stations! Fortunately, we didn't even hear many stations, so we didn't have to worry about that, that we will not appeal.

Comparison of ED1B and OM0A on the 160m band in the CQWW Contest 2020
Comparison of ED1B and OM0A on the 160m band in the CQWW Contest 2020

Final score OM0A in CQ WW DX Conteste

In the evening, we pushed the score over 300,000 points. The number of connections stopped at 1107. Online contestový server https://cqcontest.net/ he had some outages and therefore no longer see the end of the race in it.

 

 

Distribution of the number of OM0RX and OM0AAO connections in the CQWW contest
Distribution of the number of OM0RX and OM0AAO connections in the CQWW contest

 

Score increase after hours
Score increase after hours

Thank you very much, who caught our weak signal in a fascinating sea of ​​signals, thank you to my family for the space to realize our folly and birds good luck!