[3830] ARRLDX CW ZF5T(@ZF9CW) M/S LP
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Mon Feb 17 11:30:31 EST 2020
ARRL DX Contest, CW - 2020
Call: ZF5T
Operator(s): K4UEE W5SJ ZF9CW
Station: ZF9CW
Class: M/S LP
QTH: Cayman Brac
Operating Time (hrs): 45:40
Summary:
Band QSOs Mults
-------------------
160: 479 57
80: 871 62
40: 1139 60
20: 1093 61
15: 630 58
10: 243 30
-------------------
Total: 4455 328 Total Score = 4,383,720
Club: Brac Radio Contest Club
Comments:
This contest was a lot of fun. Long time friend, W5SJ, and new friend, K4UEE,
came to Cayman Brac and for the first time the station was configured and tested
in the multi-operator category.
K4UEE has a lot of experience in organizing DXpeditions and got us on track with
a good operating schedule. Other than the shared embarrassment of a few mental
errors and another problem out of our control everything worked well and we all
enjoyed the contest. We lost the Internet for about six hours and we were
without power for 1.5 hours. That was stressful, and we were lucky to
eventually get some computer glitches sorted out after the power was restored.
Both W5SJ and K4UEE have great personalities and we had fun. At one point in
time I asked K4UEE if he thought I should slow down to 44 WPM and with a wry
grin he said he thought that might allow me to pick up some lids that I would
otherwise miss.
After a few tries I worked K3LR on 10m, the only signal that could be heard. I
thought it might be our only 10m contact for the weekend, but an hour later the
band opened East of the MS River and we had some 10m fun for a couple hours.
After the CQ 160 Contest, my plan was to take all my antennas down and rework my
two homebrew triband Yagi antennas adding a few feet to the booms and a little
better performance with different element lengths and spacing. The new design
checked out using NEC-4. After modifying one of the two I found that although
the SWR was perfect on 20 and 15, it did not look good on 10. This was testing
with the antenna a few feet off the ground and pointing up at about 45 degrees.
Maybe overlooking a mistake but not finding any dimensional errors and not
having the software locally to figure something out, I called on my antenna
mentor, Scott, WU2X, to save the day. He used his magic to start from scratch
with my taper schedule and limitations provided to give me a new design. This
time I was very careful and every dimension was most nearly perfect and so was
the performance, matching the curves provided by NEC-4. I really appreciate
Scott taking the time on very short notice to give me a new design overnight
that works very well.
The antennas are 2 elements on 20m, 3 on 15m and 5 on 10m - 10 elements on 20
foot booms. After all the work on my initial design, I had decided that I was
not going to do the work to go ahead with the second antenna, but naturally
decided a couple days before the contest to do whatever was necessary to rework
it as well and get it back on the tower fixed North. It took a day and a half
but was successfully done.
The tribanders are now also fed with new chokes I made using K9YC's work,
consisting of two 11 turn chokes in series. I also added a shunt coil with
encouragement of K9MA based on W5JAW's design to ground the driven elements for
top loading the tower which is shunt fed with a pretty extensive cage consisting
of four wires spaced a couple feet apart from each other around one side of the
tower. I grounded the center of the 20m reflector on the top antenna. My 160m
setup continues to work well though we were disappointed with the multiplier
number on that band, missing four easy sections.
We will be here until mid March. Hopefully will be able to make everything work
for phone contests and get on 160 next weekend and for ARRL phone next month.
Some statistics follow from CBS.
73 from the crew at ZF5T!
Stan, ZF9CW (K5GO)
Cabrillo Statistics (Version 10g) by K5KA & N6TV
http://bit.ly/cabstat
CALLSIGN: ZF5T
CONTEST: ARRL-DX-CW
CATEGORY-OPERATOR: MULTI-OP
CATEGORY-TRANSMITTER: ONE
OPERATORS: K4UEE W5SJ ZF9CW
-------------- Q S O R a t e S u m m a r y ---------------------
Hour 160 80 40 20 15 10 Rate Total Pct
--------------------------------------------------------------------
0000 0 0 154 0 0 0 154 154 3.5
0100 0 0 175 0 0 0 175 329 7.4
0200 0 164 12 0 0 0 176 505 11.3
0300 0 153 0 0 0 0 153 658 14.8
0400 176 0 0 0 0 0 176 834 18.7
0500 42 2 78 0 0 0 122 956 21.5
0600 1 86 29 0 0 0 116 1072 24.1
0700 35 0 42 0 0 0 77 1149 25.8
0800 10 13 11 0 0 0 34 1183 26.6
0900 2 32 22 0 0 0 56 1239 27.8
1000 22 17 18 0 0 0 57 1296 29.1
1100 2 54 33 0 0 0 89 1385 31.1
1200 0 2 64 0 0 0 66 1451 32.6
1300 0 0 0 9 0 0 9 1460 32.8
1400 0 0 0 117 0 0 117 1577 35.4
1500 0 0 0 50 5 0 55 1632 36.7
1600 0 0 0 43 11 0 54 1686 37.9
1700 0 0 0 154 0 0 154 1840 41.3
1800 0 0 0 166 0 0 166 2006 45.1
1900 0 0 0 30 95 0 125 2131 47.9
2000 0 0 0 0 73 0 73 2204 49.5
2100 0 0 26 29 0 0 55 2259 50.8
2200 0 0 0 113 0 0 113 2372 53.3
2300 0 0 20 78 0 0 98 2470 55.5
0000 0 0 96 0 0 0 96 2566 57.6
0100 0 56 69 0 0 0 125 2691 60.5
0200 54 38 34 0 0 0 126 2817 63.3
0300 38 53 0 0 0 0 91 2908 65.3
0400 22 56 12 0 0 0 90 2998 67.4
0500 17 43 27 0 0 0 87 3085 69.3
0600 5 0 44 0 0 0 49 3134 70.4
0700 7 32 0 0 0 0 39 3173 71.3
0800 5 17 5 0 0 0 27 3200 71.9
0900 2 4 19 0 0 0 25 3225 72.5
1000 0 0 4 0 0 0 4 3229 72.5
1100 25 48 1 0 0 0 74 3303 74.2
1200 2 0 86 2 0 0 90 3393 76.2
1300 0 0 42 29 1 0 72 3465 77.8
1400 0 0 0 13 9 0 22 3487 78.3
1500 0 0 0 26 44 10 80 3567 80.1
1600 0 0 0 0 0 57 57 3624 81.4
1700 0 0 0 0 4 70 74 3698 83.1
1800 0 0 0 0 131 32 163 3861 86.7
1900 0 0 0 0 81 69 150 4011 90.1
2000 0 0 0 0 138 5 143 4154 93.3
2100 0 0 0 82 38 0 120 4274 96.0
2200 0 0 0 108 0 0 108 4382 98.4
2300 12 0 12 45 0 0 69 4451 100.0
------------------------------------------------------
Total 479 870 1135 1094 630 243 4451
Gross QSOs=4570 Dupes=119 Net QSOs=4451
Unique callsigns worked = 2165
The best 60 minute rate was 207/hour from 1822 to 1921
The best 30 minute rate was 234/hour from 0402 to 0431
The best 10 minute rate was 258/hour from 0420 to 0429
The best 1 minute rates were:
6 QSOs/minute 4 times.
5 QSOs/minute 48 times.
4 QSOs/minute 235 times.
3 QSOs/minute 457 times.
2 QSOs/minute 589 times.
1 QSOs/minute 698 times.
------------------ C o u n t r y S u m m a r y ------------------
Country 160 80 40 20 15 10 Total Pct
-------------------------------------------------------------------
K 451 822 1060 1036 594 240 4203 94.4
KG4 0 1 2 1 0 2 6 0.1
KH2 0 0 0 1 0 0 1 0.0
VE 28 47 73 56 36 1 241 5.4
-------------------------------------------------------------------
Total 479 870 1135 1094 630 243 4451
Multi-band QSOs
---------------
1 bands 1115
2 bands 393
3 bands 307
4 bands 170
5 bands 131
6 bands 49
The following stations were worked on 6 bands:
N0AX W1TC K5RX NR4M NO6T K4AB
KR4F W3LPL K8AZ AD8J K3LR K2SX
K2AX K3IE N4RA W9VW K1LT N5AW
K3JWI K9CT K5GN K4TCG N4UU N5CQ
KB3VQC K5TR VE3EJ K0ZR N4ZZ N3RS
AA7A W0RIC K5KG W4CB K3TC N7IR
K5UR AG4W ND4Y NW3Y N4QS WX0B
K7HP W8TK K8LS AC0C K2UR K5YY
AA2Q
------- S i n g l e B a n d Q S O s ------
Band 160 80 40 20 15 10
----------------------------------------------
QSOs 106 200 321 327 115 46
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