Logs for the Worked All Germany contest from 2017 to 2023 are now available in this repository of public WAG logs.
D. R. Evans (N7DR)
Writing, amateur radio and other subjects.
2024-04-21
2024-03-13
Reverse NILs in CQ WW: 2023; 2014 to 2023
The basic notion of reverse NILs (rNILs; or, I suppose, RNILs) is described here, along with a description of a simple script for calculating rNILs for CQ WW contests
and the result of applying that code to the contests for 2005. See also
the comments at the end of that post. I would be delighted if anyone
who spots any errors in the script would inform me.
We
can also look at the results for periods of ten years at a time; the
only difference in the way that these decadal tables are
calculated is that the minimum number of rQSOs is raised from 50 to 250
for tables pertaining to all QSOs and from 25 to 125 for those
pertaining to intra-W QSOs. (That is, the value of the variable MIN_QSOs is changed from 50 to 250.)
Here are the results for 2023 and for the period from 2014 to 2023. As in prior years, I refrain from comment on specific calls.
2023 SSB:
Call | Total rQSOs | Total rNILs |
---|---|---|
K4JPD | 1133 | 1120 |
RA3XM | 1123 | 905 |
CA3VAK | 889 | 885 |
PY2DR | 310 | 305 |
F8DVD | 2372 | 275 |
CN3A | 16247 | 261 |
KE0UI | 303 | 251 |
NN7CW | 2274 | 224 |
6Y1V | 7891 | 218 |
TO5A | 7594 | 206 |
Call | Total rQSOs | Total rNILs | % rNILs |
---|---|---|---|
CA3VAK | 889 | 885 | 99.6 |
K4JPD | 1133 | 1120 | 98.9 |
PY2DR | 310 | 305 | 98.4 |
IU0PXM | 112 | 101 | 90.2 |
KE0UI | 303 | 251 | 82.8 |
GW0NEC | 62 | 50 | 80.6 |
RA3XM | 1123 | 905 | 80.6 |
KE2HG | 178 | 125 | 70.2 |
9A1EA | 98 | 67 | 68.4 |
DO6MRC | 224 | 103 | 46.0 |
Call | Total rQSOs with Ws | rNILs against Ws | Total rQSOs with non-Ws | rNILs against non-Ws |
---|---|---|---|---|
K4JPD | 45 | 45 | 1088 | 1075 |
N2IC | 187 | 34 | 2091 | 17 |
NN7CW | 81 | 28 | 2193 | 196 |
K3LR | 616 | 25 | 7900 | 101 |
KW7MM | 145 | 24 | 1237 | 16 |
WX3B | 269 | 22 | 5039 | 68 |
K3EST | 320 | 18 | 2666 | 41 |
K5GN | 251 | 10 | 2517 | 39 |
K9RS | 47 | 9 | 3523 | 45 |
W2A | 45 | 9 | 3099 | 56 |
Call | Total rQSOs with Ws | Total rNILs against Ws | % rNILs against Ws | Total rQSOs with non-Ws | rNILs against non-Ws | % rNILs against non-Ws |
---|---|---|---|---|---|---|
K4JPD | 45 | 45 | 100.0 | 1088 | 1075 | 98.8 |
NN7CW | 81 | 28 | 34.6 | 2193 | 196 | 8.9 |
W2A | 45 | 9 | 20.0 | 3099 | 56 | 1.8 |
K9RS | 47 | 9 | 19.1 | 3523 | 45 | 1.3 |
W7VJ | 27 | 5 | 18.5 | 983 | 6 | 0.6 |
N2IC | 187 | 34 | 18.2 | 2091 | 17 | 0.8 |
KW7MM | 145 | 24 | 16.6 | 1237 | 16 | 1.3 |
K8LX | 27 | 4 | 14.8 | 1014 | 17 | 1.7 |
K0MD | 37 | 5 | 13.5 | 819 | 16 | 2.0 |
W1RCR | 73 | 7 | 9.6 | 1034 | 19 | 1.8 |
2023 CW:
Call | Total rQSOs | Total rNILs |
---|---|---|
SZ1A | 4627 | 1201 |
OK2YZ | 878 | 460 |
W1WEF | 1227 | 296 |
D4C | 16391 | 229 |
NA3M | 613 | 211 |
CN3A | 14898 | 205 |
EA8RM | 7890 | 194 |
EF6T | 7895 | 188 |
VK6T | 1503 | 187 |
8P5A | 7530 | 186 |
Call | Total rQSOs | Total rNILs | % rNILs |
---|---|---|---|
UT3PA | 107 | 106 | 99.1 |
IZ2EJU | 105 | 103 | 98.1 |
W6ENZ | 184 | 142 | 77.2 |
CM3OR | 148 | 109 | 73.6 |
JE1TSD | 98 | 66 | 67.3 |
VA3SB | 199 | 122 | 61.3 |
OK2YZ | 878 | 460 | 52.4 |
6K2ILX | 109 | 57 | 52.3 |
JF2WXS | 68 | 35 | 51.5 |
JH8CXW | 128 | 63 | 49.2 |
Call | Total rQSOs with Ws | rNILs against Ws | Total rQSOs with non-Ws | rNILs against non-Ws |
---|---|---|---|---|
N8OO | 82 | 61 | 1143 | 15 |
NN7CW | 87 | 43 | 3655 | 37 |
N1LN | 45 | 19 | 2034 | 22 |
K0RF | 213 | 18 | 4593 | 78 |
K8LX | 91 | 17 | 3761 | 44 |
AB2E/VP9 | 1773 | 15 | 1534 | 22 |
AK1MD | 66 | 15 | 1405 | 27 |
NE3F | 44 | 14 | 2435 | 41 |
NF3R | 38 | 13 | 1866 | 17 |
K1LZ | 298 | 12 | 9528 | 95 |
Call | Total rQSOs with Ws | Total rNILs against Ws | % rNILs against Ws | Total rQSOs with non-Ws | rNILs against non-Ws | % rNILs against non-Ws |
---|---|---|---|---|---|---|
N8OO | 82 | 61 | 74.4 | 1143 | 15 | 1.3 |
NN7CW | 87 | 43 | 49.4 | 3655 | 37 | 1.0 |
N1LN | 45 | 19 | 42.2 | 2034 | 22 | 1.1 |
NF3R | 38 | 13 | 34.2 | 1866 | 17 | 0.9 |
NE3F | 44 | 14 | 31.8 | 2435 | 41 | 1.7 |
K0YR | 28 | 8 | 28.6 | 688 | 10 | 1.5 |
N5JJ | 25 | 7 | 28.0 | 482 | 5 | 1.0 |
AK1MD | 66 | 15 | 22.7 | 1405 | 27 | 1.9 |
K8LX | 91 | 17 | 18.7 | 3761 | 44 | 1.2 |
NU4E | 29 | 5 | 17.2 | 2113 | 23 | 1.1 |
Looking at the past decade:
2014 to 2023 SSB:
Call | Total rQSOs | Total rNILs |
---|---|---|
EA2DMH | 6876 | 1662 |
CN3A | 88293 | 1626 |
LZ9W | 95029 | 1390 |
PJ2T | 71599 | 1197 |
K4JPD | 4576 | 1152 |
PY2HT | 4097 | 1122 |
YL2014W | 1106 | 1099 |
MI0M | 3870 | 1085 |
YT5A | 74353 | 1051 |
A73A | 55005 | 1040 |
Call | Total rQSOs | Total rNILs | % rNILs |
---|---|---|---|
YV4GMG | 328 | 327 | 99.7 |
CA3VAK | 889 | 885 | 99.6 |
YL2014W | 1106 | 1099 | 99.4 |
ZZ5Z | 297 | 292 | 98.3 |
AA1BU | 392 | 350 | 89.3 |
EA8DDS | 503 | 387 | 76.9 |
LU9WE | 772 | 559 | 72.4 |
YO2MLS | 313 | 224 | 71.6 |
RT9X | 256 | 177 | 69.1 |
VE2RO | 596 | 397 | 66.6 |
Call | Total rQSOs with Ws | rNILs against Ws | Total rQSOs with non-Ws | rNILs against non-Ws |
---|---|---|---|---|
N7DD | 549 | 371 | 7313 | 144 |
KV0Q | 753 | 343 | 6791 | 92 |
K3LR | 5319 | 128 | 61644 | 746 |
N2IC | 814 | 113 | 12004 | 97 |
NY6DX | 200 | 95 | 5782 | 93 |
N9RV | 603 | 86 | 10147 | 86 |
K3EST | 1749 | 85 | 14376 | 232 |
K5TR | 3189 | 76 | 21987 | 349 |
W3LPL | 2276 | 54 | 44619 | 600 |
WX3B | 1422 | 53 | 25097 | 343 |
Call | Total rQSOs with Ws | Total rNILs against Ws | % rNILs against Ws | Total rQSOs with non-Ws | rNILs against non-Ws | % rNILs against non-Ws |
---|---|---|---|---|---|---|
N7DD | 549 | 371 | 67.6 | 7313 | 144 | 2.0 |
NY6DX | 200 | 95 | 47.5 | 5782 | 93 | 1.6 |
KV0Q | 753 | 343 | 45.6 | 6791 | 92 | 1.4 |
K9BGL | 128 | 49 | 38.3 | 6171 | 202 | 3.3 |
K4JPD | 138 | 52 | 37.7 | 4438 | 1100 | 24.8 |
KW7MM | 145 | 24 | 16.6 | 1238 | 16 | 1.3 |
AB4B | 143 | 22 | 15.4 | 5674 | 64 | 1.1 |
N9RV | 603 | 86 | 14.3 | 10147 | 86 | 0.8 |
N2IC | 814 | 113 | 13.9 | 12004 | 97 | 0.8 |
W8PR | 180 | 23 | 12.8 | 10945 | 154 | 1.4 |
2014 to 2023 CW:
Call | Total rQSOs | Total rNILs |
---|---|---|
SZ1A | 42118 | 1806 |
LZ9W | 107972 | 1382 |
PJ2T | 93729 | 1374 |
P33W | 80892 | 1175 |
IK3UNA | 12883 | 1138 |
YT5A | 91834 | 1050 |
9A1A | 89257 | 1035 |
JA3YBK | 49387 | 1019 |
TI7W | 52256 | 1018 |
CS2C | 11967 | 1010 |
Call | Total rQSOs | Total rNILs | % rNILs |
---|---|---|---|
RZ9CJ | 462 | 460 | 99.6 |
OK1KZ | 830 | 712 | 85.8 |
WB0CFF | 430 | 313 | 72.8 |
XF1IM | 702 | 385 | 54.8 |
W2ANQ | 320 | 174 | 54.4 |
YS1MS | 433 | 232 | 53.6 |
PP5BLU | 305 | 148 | 48.5 |
OM2IV | 800 | 372 | 46.5 |
F6GOE | 1392 | 645 | 46.3 |
TA1FA/2 | 397 | 181 | 45.6 |
Call | Total rQSOs with Ws | rNILs against Ws | Total rQSOs with non-Ws | rNILs against non-Ws |
---|---|---|---|---|
N7DD | 372 | 192 | 8764 | 164 |
K0RF | 2191 | 161 | 32869 | 412 |
NR5M | 1207 | 130 | 14698 | 141 |
KV2K | 393 | 118 | 19912 | 333 |
NN7CW | 988 | 110 | 19280 | 212 |
N8OO | 161 | 103 | 3013 | 26 |
N9RV | 763 | 82 | 18904 | 192 |
NA3M | 190 | 82 | 12050 | 303 |
K3LR | 3289 | 74 | 68058 | 584 |
WJ9B | 837 | 74 | 13933 | 131 |
Call | Total rQSOs with Ws | Total rNILs against Ws | % rNILs against Ws | Total rQSOs with non-Ws | rNILs against non-Ws | % rNILs against non-Ws |
---|---|---|---|---|---|---|
N8OO | 161 | 103 | 64.0 | 3013 | 26 | 0.9 |
N7DD | 372 | 192 | 51.6 | 8764 | 164 | 1.9 |
NA3M | 190 | 82 | 43.2 | 12050 | 303 | 2.5 |
AK1MD | 146 | 45 | 30.8 | 4173 | 115 | 2.8 |
KV2K | 393 | 118 | 30.0 | 19912 | 333 | 1.7 |
K8LX | 288 | 71 | 24.7 | 11738 | 128 | 1.1 |
NE3F | 252 | 60 | 23.8 | 16112 | 268 | 1.7 |
KZ5D | 243 | 57 | 23.5 | 10793 | 140 | 1.3 |
W5ZN | 213 | 48 | 22.5 | 4538 | 48 | 1.1 |
KV0Q | 200 | 43 | 21.5 | 1930 | 63 | 3.3 |
2024-03-10
Busting Calls: CQ WW 2023
Prior posts in this series:
- Initial analysis
- Further analysis
- CQ WW SSB 2005 to 2016
- CQ WW CW 2005 to 2016
- Non-Run QSOs, CQ WW 2005 to 2016
- Run QSOs, CQ WW 2005 to 2016
- 2017, 2018
- 2019
- 2020
- 2021
- 2022
Throughout this post, I apply the procedures developed in the second post above.
For the purpose of this post, only verified QSOs are counted.
Lowest Probability
I begin with an ordered list of the stations with the lowest probabilities of busting a call in 2023 CQ WW SSB.
2023 CQ WW SSB -- weighted mean values of $p_{bust}$ (all) | ||||
---|---|---|---|---|
Position | Call | weighted mean | $Q_v$ | $B$ |
1 | G0MTN | 0.0004 | 2,056 | 0 |
2 | DL1NEO | 0.0009 | 1,069 | 0 |
3 | W9MR | 0.0009 | 1,061 | 0 |
4 | KW1X | 0.0010 | 910 | 0 |
5 | W1TC | 0.0012 | 821 | 0 |
6 | ES2MC | 0.0012 | 790 | 0 |
7 | N4PQX | 0.0013 | 747 | 0 |
8 | HA1BB | 0.0014 | 709 | 0 |
9 | W4EEY | 0.0014 | 693 | 0 |
10 | OE6MDF | 0.0015 | 2,044 | 2 |
And for 2023 CQ WW CW:
2023 CQ WW CW -- weighted mean values of $p_{bust}$ (all) | ||||
---|---|---|---|---|
Position | Call | weighted mean | $Q_v$ | $B$ |
1 | DM2M | 0.0005 | 1,850 | 0 |
2 | W3KB | 0.0007 | 1,281 | 0 |
3 | JG1LFR | 0.0008 | 1,125 | 0 |
4 | OR2F | 0.0008 | 2,366 | 1 |
5 | DL6RDR | 0.0009 | 1,108 | 0 |
6 | N2GC | 0.0010 | 2,091 | 1 |
7 | AD1C | 0.0010 | 945 | 0 |
8 | SN5J | 0.0010 | 1,966 | 1 |
9 | UX1VT | 0.0010 | 914 | 0 |
10 | DK5TX | 0.0011 | 1,790 | 1 |
It is interesting to plot the aggregated probability function for $p_{bust}$ weighted by the verified number of QSOs, $Q_v$, for all stations:
In case it isn't clear, the location of the solid vertical lines represent the weighted means of the probability curves. In 2023, then, there was essentially no difference between these curves for CW and SSB.We can limit the analysis to calling stations (i.e., not the running station).
2023 CQ WW SSB -- weighted mean values of $p_{bust}$ (no-run) | ||||
---|---|---|---|---|
Position | Call | weighted mean | $Q_v$ | $B$ |
1 | G0MTN | 0.0007 | 1,362 | 0 |
2 | NJ4P | 0.0007 | 1,295 | 0 |
3 | DL1NEO | 0.0009 | 1,067 | 0 |
4 | W9MR | 0.0009 | 1,014 | 0 |
5 | KW1X | 0.0010 | 908 | 0 |
6 | PC3M | 0.0011 | 846 | 0 |
7 | OK6T | 0.0011 | 1,750 | 1 |
8 | W1TC | 0.0012 | 815 | 0 |
9 | VE9AA | 0.0013 | 728 | 0 |
10 | HA1BB | 0.0014 | 705 | 0 |
2023 CQ WW CW -- weighted mean values of $p_{bust}$ (no-run) | ||||
---|---|---|---|---|
Position | Call | weighted mean | $Q_v$ | $B$ |
1 | DM2M | 0.0006 | 1,445 | 0 |
2 | K3WJV | 0.0007 | 1,299 | 0 |
3 | SP9XCN | 0.0008 | 1,161 | 0 |
4 | LA8OM | 0.0008 | 1,124 | 0 |
5 | W3KB | 0.0009 | 1,079 | 0 |
6 | DL6RDR | 0.0009 | 1,024 | 0 |
7 | N2GC | 0.0009 | 1,016 | 0 |
8 | K9NW | 0.0009 | 1,015 | 0 |
9 | K1ZZ | 0.0010 | 995 | 0 |
10 | M6W | 0.0010 | 2,073 | 1 |
And similarly for running stations.
2023 CQ WW SSB -- weighted mean values of $p_{bust}$ (run) | ||||
---|---|---|---|---|
Position | Call | weighted mean | $Q_v$ | $B$ |
1 | OL0W | 0.0009 | 1,043 | 0 |
2 | MM1E | 0.0010 | 956 | 0 |
3 | G0MTN | 0.0014 | 694 | 0 |
4 | VE6BBP | 0.0017 | 563 | 0 |
5 | DL8OBF | 0.0019 | 514 | 0 |
6 | SP9XCN | 0.0019 | 500 | 0 |
7 | K3CT | 0.0020 | 482 | 0 |
8 | 9K2HN | 0.0021 | 1,923 | 3 |
9 | BV2A | 0.0023 | 426 | 0 |
10 | KU2M | 0.0023 | 862 | 1 |
2023 CQ WW CW -- weighted mean values of $p_{bust}$ (run) | ||||
---|---|---|---|---|
Position | Call | weighted mean | $Q_v$ | $B$ |
1 | E72U | 0.0010 | 941 | 0 |
2 | OR2F | 0.0012 | 1,714 | 1 |
3 | DJ3RA | 0.0016 | 607 | 0 |
4 | N2GC | 0.0019 | 1,075 | 1 |
5 | K1ZZ | 0.0019 | 2,670 | 4 |
6 | WB4TDH | 0.0019 | 499 | 0 |
7 | AH6KO | 0.0021 | 1,413 | 2 |
8 | OQ5M | 0.0022 | 1,390 | 2 |
9 | W8FJ | 0.0022 | 1,840 | 3 |
10 | N3NR | 0.0023 | 417 | 0 |
We can also look at the changes over the period from 2005 to 2023.
First for all QSOs:
Then for calling stations:
And for running stations:
The clear up-tick on CW in 2023 is rather interesting. At first, I thought that it might be due to people logging calls mis-spotted on the various spotting networks. But its presence when one limits the analysis to running stations would seem to make that theory untenable. Perhaps it is due to an increase in entrants using code readers, although one would expect few runners to be using those. So this might be an interesting area for further analysis, should anyone be interested. It really is a quite remarkable year-on-year change.I think it's also interesting to see who appears to have the lowest probability of busting a call over an extended period. So, for the last ten years:
2014--2023 CQ WW SSB -- weighted mean values of $p_{bust}$ (all) | ||||
---|---|---|---|---|
Position | Call | weighted mean | $Q_v$ | $B$ |
1 | NW5Q | 0.0005 | 1,971 | 0 |
2 | IZ4JMA | 0.0005 | 1,705 | 0 |
3 | ES2MC | 0.0006 | 3,570 | 1 |
4 | OZ6AGX | 0.0006 | 1,578 | 0 |
5 | EW1IP | 0.0006 | 1,495 | 0 |
6 | OH6GDX | 0.0006 | 1,437 | 0 |
7 | OH7GGX | 0.0007 | 3,094 | 1 |
8 | IK4OMU | 0.0007 | 1,376 | 0 |
9 | IK1PMR | 0.0007 | 2,813 | 1 |
10 | W4EE | 0.0008 | 1,224 | 0 |
2014--2023 CQ WW CW -- weighted mean values of $p_{bust}$ (all) | ||||
---|---|---|---|---|
Position | Call | weighted mean | $Q_v$ | $B$ |
1 | NW0M | 0.0002 | 3,875 | 0 |
2 | N7IR | 0.0003 | 2,558 | 0 |
3 | AD1C | 0.0004 | 5,676 | 1 |
4 | WB4TDH | 0.0004 | 5,437 | 1 |
5 | K6WSC | 0.0004 | 5,134 | 1 |
6 | KM3T | 0.0005 | 1,966 | 0 |
7 | K9PW | 0.0005 | 1,947 | 0 |
8 | JR3RWB | 0.0005 | 1,892 | 0 |
9 | DP4X | 0.0005 | 4,132 | 1 |
10 | SE6N | 0.0005 | 4,055 | 1 |
A good argument can be made that a better measure of copying ability is to consider only run QSOs:
2014--2023 CQ WW SSB -- weighted mean values of $p_{bust}$ (run) | ||||
---|---|---|---|---|
Position | Call | weighted mean | $Q_v$ | $B$ |
1 | F4FTA | 0.0009 | 1,098 | 0 |
2 | DL7URH | 0.0010 | 928 | 0 |
3 | C6ARW | 0.0010 | 1,925 | 1 |
4 | ES2MC | 0.0011 | 1,802 | 1 |
5 | LU1FAM | 0.0011 | 1,765 | 1 |
6 | CF7RR | 0.0013 | 1,557 | 1 |
7 | DL8RDL | 0.0013 | 734 | 0 |
8 | R7MM | 0.0013 | 728 | 0 |
9 | VA7RR | 0.0015 | 5,494 | 7 |
10 | K1ZZ | 0.0016 | 605 | 0 |
2014--2023 CQ WW CW -- weighted mean values of $p_{bust}$ (run) | ||||
---|---|---|---|---|
Position | Call | weighted mean | $Q_v$ | $B$ |
1 | LY3CY | 0.0005 | 1,755 | 0 |
2 | RW5CW | 0.0006 | 1,431 | 0 |
3 | WB4TDH | 0.0007 | 3,049 | 1 |
4 | W3OA | 0.0007 | 1,354 | 0 |
5 | E72U | 0.0008 | 3,893 | 2 |
6 | SE6N | 0.0008 | 1,202 | 0 |
7 | KM3T | 0.0008 | 1,193 | 0 |
8 | OH6MW | 0.0008 | 2,372 | 1 |
9 | R2VM | 0.0009 | 1,040 | 0 |
10 | UA3QAM | 0.0010 | 998 | 0 |
Highest Probability
We can also look at the calls associated with the highest probability of busting calls in either the forward or the reverse direction:
2023 SSB -- Most Busts | ||||
---|---|---|---|---|
Position | Call | QSOs | Busts | % Busts |
1 | CN3A | 15,944 | 276 | 1.7 |
2 | 6Y1V | 7,660 | 228 | 3.0 |
3 | II9P | 6,697 | 203 | 3.0 |
4 | CQ8M | 5,495 | 202 | 3.7 |
5 | LS2D | 4,382 | 194 | 4.4 |
6 | TO5A | 7,390 | 190 | 2.6 |
7 | OT5A | 7,273 | 186 | 2.6 |
8 | HI3LT | 4,965 | 161 | 3.2 |
9 | PJ2T | 8,812 | 154 | 1.7 |
10 | CR6K | 9,992 | 149 | 1.5 |
2023 CW -- Most Busts | ||||
---|---|---|---|---|
Position | Call | QSOs | Busts | % Busts |
1 | EA8RM | 7,777 | 307 | 3.9 |
2 | D4C | 16,145 | 270 | 1.7 |
3 | TM1A | 8,232 | 246 | 3.0 |
4 | CN3A | 14,689 | 213 | 1.5 |
5 | PJ2T | 11,532 | 213 | 1.8 |
6 | OT7T | 9,412 | 205 | 2.2 |
7 | II2S | 10,153 | 184 | 1.8 |
8 | PX2A | 7,508 | 181 | 2.4 |
9 | HQ9X | 8,454 | 171 | 2.0 |
10 | RM9A | 9,587 | 167 | 1.7 |
2023 SSB -- Highest Percentage of Busts (≥100 QSOs) | ||||
---|---|---|---|---|
Position | Call | QSOs | Busts | % Busts |
1 | YB1EQI | 109 | 20 | 18.3 |
2 | BA7JMO | 110 | 18 | 16.4 |
3 | C31LK | 109 | 17 | 15.6 |
4 | IS0AGY | 105 | 15 | 14.3 |
5 | YF4SDF | 106 | 15 | 14.2 |
6 | UR5ZDZ | 213 | 30 | 14.1 |
7 | SA6PBW | 125 | 17 | 13.6 |
8 | CE3TKG | 152 | 20 | 13.2 |
9 | BG6QLL | 100 | 13 | 13.0 |
10 | OH1TS | 103 | 13 | 12.6 |
2023 CW -- Highest Percentage of Busts (≥100 QSOs) | ||||
---|---|---|---|---|
Position | Call | QSOs | Busts | % Busts |
1 | IW2OGY | 127 | 26 | 20.5 |
2 | 9M2KDX | 113 | 22 | 19.5 |
3 | K3GG | 154 | 29 | 18.8 |
4 | VE4DL | 171 | 32 | 18.7 |
5 | K9HXO | 149 | 27 | 18.1 |
6 | AI2U | 224 | 40 | 17.9 |
7 | EF4F | 185 | 33 | 17.8 |
8 | LA6M | 346 | 61 | 17.6 |
9 | SP2EPV | 234 | 41 | 17.5 |
10 | SM5DNO | 112 | 19 | 17.0 |
2023 SSB -- Most Reverse Busts | ||||
---|---|---|---|---|
Position | Call | QSOs | Reverse Busts | % Reverse Busts |
1 | DF0HQ | 9,933 | 305 | 3.1 |
2 | 9A1A | 11,223 | 277 | 2.5 |
3 | EA8RM | 7,159 | 260 | 3.6 |
4 | YT5A | 11,767 | 186 | 1.6 |
5 | CN3A | 15,944 | 185 | 1.2 |
6 | CR6K | 9,992 | 163 | 1.6 |
7 | LZ6V | 2,070 | 163 | 7.9 |
8 | LU8DPM | 2,770 | 161 | 5.8 |
9 | EW5A | 7,578 | 158 | 2.1 |
10 | S53M | 5,884 | 156 | 2.7 |
2023 CW -- Most Reverse Busts | ||||
---|---|---|---|---|
Position | Call | QSOs | Reverse Busts | % Reverse Busts |
1 | UT3NK | 528 | 528 | 100.0 |
2 | JF1NHD | 3,508 | 429 | 12.2 |
3 | RM9A | 9,587 | 404 | 4.2 |
4 | SM0HRP | 2,190 | 387 | 17.7 |
5 | II2S | 10,153 | 361 | 3.6 |
6 | DF0HQ | 9,526 | 271 | 2.8 |
7 | YT5A | 11,522 | 266 | 2.3 |
8 | RT4F | 8,369 | 260 | 3.1 |
9 | CN3A | 14,689 | 258 | 1.8 |
10 | K3LR | 9,083 | 252 | 2.8 |
2023 SSB -- Highest Percentage of Reverse Busts (≥100 QSOs) | |||
---|---|---|---|
Position | Call | QSOs | % Reverse Busts |
1 | DX3EVM | 320 | 15.6 |
2 | UA3R | 191 | 14.7 |
3 | DU1QVK | 190 | 13.2 |
4 | BG7SSK | 146 | 11.0 |
5 | KE7NGO | 174 | 10.9 |
6 | K9CJ | 120 | 10.8 |
7 | BA7MT | 195 | 10.8 |
8 | VK2DG | 322 | 9.9 |
9 | HZ1SK | 357 | 9.8 |
10 | 9A5AFF | 543 | 9.8 |
2023 CW -- Highest Percentage of Reverse Busts (≥100 QSOs) | |||
---|---|---|---|
Position | Call | QSOs | % Reverse Busts |
1 | UT3NK | 528 | 100.0 |
2 | SQ2RH | 102 | 30.4 |
3 | DF5GO | 125 | 20.8 |
4 | SA5CDO | 274 | 18.6 |
5 | SM0HRP | 2,190 | 17.7 |
6 | CB4EW | 117 | 15.4 |
7 | N5NHJ | 325 | 14.8 |
8 | SQ6MIH | 421 | 14.7 |
9 | SA6AUN | 220 | 14.1 |
10 | K4HQK | 296 | 13.2 |
In tables of reverse busts, one sometimes
finds what seems like an unreasonable number of reverse busts (as is the
case, for example, for UT3NK in the 2023 CW table above). This is
generally caused by a discrepancy
between the call actually sent by the listed station and the one
recorded as being sent in at least some QSOs in the station's log. Other causes of frequent reverse busts are poor sending/audio, unusual calls and calls that are very similar to the call of an active, well-known contester.
Looking at a ten-year period:
2014--2023 SSB -- Most Busts | ||||
---|---|---|---|---|
Position | Call | QSOs | Busts | % Busts |
1 | LZ9W | 93,344 | 1,627 | 1.7 |
2 | CN3A | 86,528 | 1,534 | 1.8 |
3 | OT5A | 59,537 | 1,288 | 2.2 |
4 | PJ2T | 70,334 | 1,231 | 1.8 |
5 | YT5A | 73,097 | 1,043 | 1.4 |
6 | V26B | 59,233 | 1,008 | 1.7 |
7 | A73A | 53,842 | 958 | 1.8 |
8 | II2S | 53,546 | 905 | 1.7 |
9 | CR6K | 56,086 | 866 | 1.5 |
10 | CQ8M | 26,546 | 826 | 3.1 |
2014--2023 CW -- Most Busts | ||||
---|---|---|---|---|
Position | Call | QSOs | Busts | % Busts |
1 | PJ2T | 92,331 | 1,213 | 1.3 |
2 | LZ9W | 106,254 | 1,138 | 1.1 |
3 | TK0C | 73,216 | 1,092 | 1.5 |
4 | YT5A | 90,512 | 904 | 1.0 |
5 | JA3YBK | 48,207 | 882 | 1.8 |
6 | PI4CC | 42,027 | 825 | 2.0 |
7 | EA8RM | 32,842 | 791 | 2.4 |
8 | ZW8T | 11,756 | 789 | 6.7 |
9 | HG7T | 68,957 | 763 | 1.1 |
10 | VY2TT | 46,723 | 757 | 1.6 |
2014--2023 SSB -- Highest Percentage of Busts (≥500 QSOs) | ||||
---|---|---|---|---|
Position | Call | QSOs | Busts | % Busts |
1 | K2JMY | 1,278 | 217 | 17.0 |
2 | IS0AGY | 527 | 86 | 16.3 |
3 | YB2BNN | 632 | 87 | 13.8 |
4 | EA7JQT | 572 | 71 | 12.4 |
5 | R9MBY | 534 | 63 | 11.8 |
6 | OH1TS | 763 | 88 | 11.5 |
7 | EA1HTF | 1,762 | 177 | 10.0 |
8 | UR5ZDZ | 1,107 | 111 | 10.0 |
9 | EA4GWL | 931 | 91 | 9.8 |
10 | EA8DEG | 1,125 | 108 | 9.6 |
2014--2023 CW -- Highest Percentage of Busts (≥500 QSOs) | ||||
---|---|---|---|---|
Position | Call | QSOs | Busts | % Busts |
1 | W2UDT | 564 | 138 | 24.5 |
2 | 4Z5FW | 527 | 108 | 20.5 |
3 | BD3MV | 708 | 145 | 20.5 |
4 | DJ5UZ | 723 | 136 | 18.8 |
5 | SP2EPV | 510 | 93 | 18.2 |
6 | AE3D | 775 | 140 | 18.1 |
7 | DL7CO | 827 | 140 | 16.9 |
8 | CE6VMO | 695 | 111 | 16.0 |
9 | LZ1BY | 789 | 124 | 15.7 |
10 | PY1NSC | 573 | 89 | 15.5 |
2014--2023 SSB -- Most Reverse Busts | ||||
---|---|---|---|---|
Position | Call | QSOs | Reverse Busts | % Reverse Busts |
1 | DF0HQ | 85,290 | 2,560 | 3.0 |
2 | CN3A | 86,528 | 1,178 | 1.4 |
3 | JA3YBK | 33,724 | 1,115 | 3.3 |
4 | TM3R | 24,257 | 1,049 | 4.3 |
5 | K3LR | 65,887 | 977 | 1.5 |
6 | YT5A | 73,097 | 951 | 1.3 |
7 | EA8RM | 32,239 | 923 | 2.9 |
8 | CA3CLF | 982 | 915 | 93.2 |
9 | IK2YCW | 25,411 | 830 | 3.3 |
10 | OT5A | 59,537 | 809 | 1.4 |
2014--2023 CW -- Most Reverse Busts | ||||
---|---|---|---|---|
Position | Call | QSOs | Reverse Busts | % Reverse Busts |
1 | DF0HQ | 80,526 | 2,549 | 3.2 |
2 | JS3CTQ | 20,632 | 2,405 | 11.7 |
3 | ES9C | 59,518 | 1,862 | 3.1 |
4 | RM9A | 72,978 | 1,803 | 2.5 |
5 | HG7T | 68,957 | 1,656 | 2.4 |
6 | YT5A | 90,512 | 1,560 | 1.7 |
7 | R2VM | 1,426 | 1,426 | 100.0 |
8 | K3LR | 70,437 | 1,403 | 2.0 |
9 | HG6N | 47,920 | 1,361 | 2.8 |
10 | DR4A | 54,247 | 1,339 | 2.5 |
2014--2023 SSB -- Highest Percentage of Reverse Busts (≥500 QSOs) | |||
---|---|---|---|
Position | Call | QSOs | % Reverse Busts |
1 | CA3CLF | 982 | 93.2 |
2 | PT4Z | 1,011 | 20.3 |
3 | DX3EVM | 847 | 12.2 |
4 | ZP6DYA | 963 | 12.1 |
5 | OG60F | 4,258 | 11.4 |
6 | OA4DKN | 511 | 11.4 |
7 | BH7PCT | 846 | 10.9 |
8 | LU9DDJ | 862 | 10.4 |
9 | HS3PIK | 674 | 9.9 |
10 | BY4DX | 1,611 | 9.9 |
2014--2023 CW -- Highest Percentage of Reverse Busts (≥500 QSOs) | |||
---|---|---|---|
Position | Call | QSOs | % Reverse Busts |
1 | R2VM | 1,426 | 100.0 |
2 | UT3NK | 528 | 100.0 |
3 | YT65A | 1,149 | 37.2 |
4 | G3RWF | 2,682 | 35.5 |
5 | 5K0A | 1,853 | 32.1 |
6 | PE75W | 1,408 | 29.3 |
7 | OG55W | 3,265 | 28.6 |
8 | TA1C/2 | 1,513 | 18.1 |
9 | DP65HSC | 516 | 16.9 |
10 | 5J1E | 1,523 | 15.6 |
2024-03-04
State-by-State Activity in ARRL DX SSB, 2023
State-by-State Activity in ARRL DX CW, 2023
Earlier posts in this series:
Using the public logs from ARRL DX SSB 2023, we can generate the following band-by-band activity maps for the continental U. S.
2024-02-29
State-by-State Activity in ARRL DX CW, 2023
Earlier posts in this series:
Using the public logs from ARRL DX CW 2023, we can generate the following band-by-band activity maps for the continental U. S.
2024-02-27
State-by-State Activity in ARRL DX SSB, 2022
Earlier posts in this series:
Using the public logs from ARRL DX SSB 2022, we can generate the following band-by-band activity maps for the continental U. S.
2024-02-26
State-by-State Activity in ARRL DX CW, 2022
Earlier posts in this series:
Using the public logs from ARRL DX CW 2022, we can generate the following band-by-band activity maps for the continental U. S.