CQWW SSB 2006

Article by Dominic Smith, M0BLF, edited by Thomas Wootten, M0FFX.

I participated in the CQWW DX SSB Contest from the Cambridge University Wireless Society, using our contest callsign M4A.

A short audio clip (1m37s) of me running on 20m at about 1220UTC on Sunday can be heard here (RealAudio format) or here (MP3 format).

Summary

Contest CQ World Wide DX Contest
Callsign M4A
Mode PHONE
Category Multi Operator – Single Transmitter (MS)
Overlay —-
Band(s) All bands (AB)
Class High Power (HP)
Zone/State/… 14
Locator JO02AF
Operating time 41h13
BAND QSO DUP DXC CQ POINTS AVG
160 73 0 40 6 78 1.07
80 281 0 61 12 331 1.18
40 396 0 85 23 797 2.01
20 980 8 118 35 1845 1.88
15 591 0 113 31 1004 1.70
10 189 2 53 16 247 1.31
TOTAL 2510 10 470 123 4302 1.71
TOTAL SCORE 2 551 086

Operators: DL5RB, G3ZAY, G7VJR, KC5WNG, M0BLF, M0DEG, M0FFX, M0HSW, M0TDG, OZ7AGL

Soapbox: A very fun contest entry with a large team made up almost entirely of current students or recent graduates of Cambridge University. We had our fair share of problems, such as melting two baluns during the weekend, which left us with 80m for much of Sunday evening, and we also had only one 14/21/28MHz antenna, so the mult station could not use these bands while the run station was on one of them. Nevertheless, we improved on our score from last year and felt that conditions weren’t as bad as they might have been. More information at http://www.domsmith.co.uk/contests/cqww06/

Set-up

Run station: FT-1000MP, Quadra, Dunestar filters.

Mult station: FT-2000, TL-922, Dunestar filters.

Antennas: 160m dipole, 80m phased array, 80m dipole, 40m four-square, 40m rotating dipole, Stepp-IR.

The antennas were shared between the run and mult stations. This means, of course, that while the run station was on 20m, 15m or 10m, we could not use the mult station on any other of these bands (except if we forced the 40m rotating dipole onto 21MHz).

Logging was with Win-Test, which worked very well except for a small bug in the communication with the FT-2000 (hardly surprising given how new the rig is).

Some pictures of the set-up are at http://www.domsmith.co.uk/gallery/main.php?g2_itemId=892.

Highs and lows

Good points were beating last year’s score and taking the opportunity to introduce many students to contesting for the first time.

Low points included melting two baluns, which meant that we couldn’t use 80m for the last four hours on Sunday; getting the mobile tower stuck and not having sufficient antennas for a full mult station.

Band breakdown

(QSO totals below include dupes)

Band QSO % Time % QSO/min.
160 73 3 79 4 0.924
80 281 11 273 13 1.030
40 396 16 409 19 0.968
20 988 39 855 39 1.160
15 591 23 411 19 1.440
10 191 8 149 7 1.280
Total 2520 100 2176 100 0.877

Distribution

There were 1970 unique calls in the log, of which 2 were worked on all bands, 8 on five bands, 24 on four bands and 82 on three bands.

Rates

There were 76 minutes during which we sustained a rate of four QSOs/minute or higher (individual minutes, not one 76 min period!). On average, we made about 1.02 QSOs/minute during the 41h13min on-time.

The hourly contacts per hour rates were:

Date UTC Rate
28/10 0000 59
0100 83
0200 122
0300 66
0400 30
0500 18
0600 29
0700 40
0800 94
0900 55
1000 57
1100 55
1200 118
1300 72
1400 85
1500 124
1600 74
1700 94
1800 99
1900 32
2000 28
2100 30
2200 54
2300 26
29/10 0000 10
0100 8
0200 15
0300 16
0400 9
0500 23
0600 12
0700 24
0800 31
0900 61
1000 101
1100 85
1200 95
1300 127
1400 35
1500 74
1600 30
1700 34
1800 57
1900 63
2000 21
2100 15
2200 12
2300 18

Thanks to everyone who contacted us!

Dominic’s site can be found at http://www.domsmith.co.uk

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SH5 v1.18 (25 June 2006)

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