## 2019-08-27

### Stations With Lowest Probability of Busting a Call: CQ WW 2017 and 2018

Prior posts in this series:
Throughout this post, I apply the procedures developed in the second post above.

I begin with an ordered list of the stations with the lowest probabilities of busting a call in 2017 CQ WW SSB.

2017 CQ WW SSB -- weighted mean values of $p_{bust}$
Position Call weighted mean $Q_v$ $B$
1 OH0X 0.0010 978 0
2 C6ARW 0.0010 2,058 1
3 K1ZZ 0.0012 1,715 1
4 F4FTA 0.0012 800 0
5 DF2RG 0.0014 774 0
6 DJ8OG 0.0015 2,169 2
7 EW1P 0.00151,355 1
8 NH6V 0.0015 1,299 1
9 K2EP 0.0016 627 0
10 UW7W 0.0016 1,266 1

It is also interesting to plot the aggregated probability function for $p_{bust}$, weighted by the number of verified QSOs, $Q_v$, for all stations:

The location of the vertical line represents the weighted mean of the probability curve.

For 2018 CQ WW SSB:

2018 CQ WW SSB -- weighted mean values of $p_{bust}$
Position Call weighted mean $Q_v$ $B$
1 DF2RG 0.0011 887 0
2 N4PQX 0.0012 768 0
3 N9NB 0.0013 758 0
4OM0WR 0.0013 732 0
5 KA1ZD 0.0013 1,500 1
6 YT5IVN 0.0014 1,402 1
7 WA2FZB 0.0015628 0
8 JM1NKT 0.0016 602 0
9 KV1J 0.0017 582 0
10 W1CU 0.0017 579 0

For 2017 CQ WW CW:

2017 CQ WW CW -- weighted mean values of $p_{bust}$
Position Call weighted mean $Q_v$ $B$
1 K0KX 0.0005 1,682 0
2 DM5EE 0.0006 1,430 0
3 K1ZZ 0.0007 3,028 1
4 YO5OHO 0.0007 1,376 0
5 DP4X 0.0007 1,315 0
6 WE9V 0.0007 1,256 0
7 UT4U 0.00081,244 0
8 JH8SLS 0.0008 1,206 0
9 SP6MLX 0.0009 1,077 0
10 K2XR 0.0009 1,069 0

For 2018 CQ WW CW:

2018 CQ WW CW -- weighted mean values of $p_{bust}$
Position Call weighted mean $Q_v$ $B$
1 HB9ARF 0.0006 1,432 0
2 K6LL 0.0007 1,371 0
3 OM6RM 0.0007 1,286 0
4 UW1WU 0.0008 1,218 0
5 KG4V 0.0008 1,206 0
6 W3KB 0.0008 1,153 0
7 EW1P 0.00081,116 0
8 EU4E 0.0009 1,067 0
9 W2CDO 0.0009 1,011 0
10 DF2RG 0.0010 997 0

We can limit the analysis to calling stations (i.e., not the running station).

2017 CQ WW SSB and CW:

2017 CQ WW SSB -- weighted mean values of $p_{bust}$ (non-run)
Position Call weighted mean $Q_v$ $B$
1 EW1P 0.0008 1,132 0
2 DL6NDW 0.0012 829 0
3 DJ8OG 0.0013 762 0
4 DF2RG 0.0013 761 0
5 F4FTA 0.0015 633 0
6 K1ZZ 0.0015 1,304 1
7 SK6AW 0.0015628 0
8 K2EP 0.0016 614 0
9 UW7W 0.0016 1,234 1
10 IZ4JMA 0.0016 592 0

2017 CQ WW CW -- weighted mean values of $p_{bust}$ (non-run)
Position Call weighted mean $Q_v$ $B$
1 RM9A 0.0005 1,834 0
2 ES9C 0.0006 1,662 0
3 K0KX 0.0007 1,325 0
4 SP2LNW 0.0008 1,241 0
5 R7MM 0.0008 1,239 0
6 DM5EE 0.0008 1,160 0
7 ED2C 0.00081,122 0
8 RF9C 0.0009 1,096 0
9 LY3B 0.0009 1,068 0
10 UZ3A 0.0010 991 0

2018 CQ WW SSB and CW:

2018 CQ WW SSB -- weighted mean values of $p_{bust}$ (non-run)
Position Call weighted mean $Q_v$ $B$
1 9A2EU 0.0010 976 0
2 YT5IVN 0.0011 880 0
3 DF2RG 0.0011 868 0
4 K5ZD 0.0013 749 0
5 K3PP 0.0013 744 0
6 N4PQX 0.0013 736 3
7 LX7I 0.0015632 0
8 N9NB 0.0015 628 0
9 WA2FZB 0.0016 589 0
10 K3OO 0.0017 575 0

2018 CQ WW CW -- weighted mean values of $p_{bust}$ (non-run)
Position Call weighted mean $Q_v$ $B$
1 HG6N 0.0006 1,619 0
2 UX1VT 0.0007 1,391 0
3 S54X 0.0007 1,374 0
4 DL1WA 0.0007 1,307 0
5 K1AR 0.0008 1,209 0
6 NR4M 0.0008 1,148 0
7 RT4M 0.00081,138 0
8 LY5W 0.0008 1,111 0
9 K3PH 0.0009 1,100 0
10 W8FJ 0.0009 1,087 0

And similarly for running stations.

2017 CQ WW SSB and CW:

2017 CQ WW SSB -- weighted mean values of $p_{bust}$ (run)
Position Call weighted mean $Q_v$ $B$
1 C6ARW 0.0010 1,925 1
2 CF7RR 0.0013 1,557 1
3 OH0X 0.0014 694 0
4 HP1XT 0.0016 621 0
5 OH0V 0.0017 2,337 3
6 TK9R 0.0018 3,982 6
7 NH6V 0.00191,035 1
8 PY2KJ 0.0021 1,456 2
9 DJ8OG 0.0021 1,407 2
10 VA2WA 0.0022 1,853 3

2017 CQ WW CW -- weighted mean values of $p_{bust}$ (run)
Position Call weighted mean $Q_v$ $B$
1 K1ZZ 0.0004 2,294 0
2 W1GD 0.0011 888 0
3 8S0DX 0.0011 873 0
4 SN1Y 0.0012 1,714 1
5 N3ER 0.0013 749 0
6 EU4E 0.0013 747 0
7 UT4U 0.0013731 0
8 OM0WR 0.0013 1,517 1
9 JH8SLS 0.0014 710 0
10 S59ABC 0.0014 2,898 3

2018 CQ WW SSB and CW:

2018 CQ WW SSB -- weighted mean values of $p_{bust}$ (run)
Position Call weighted mean $Q_v$ $B$
1 OM0WR 0.0014 697 0
2 MI0I 0.0023 423 0
3 PY2KJ 0.0025 1,207 2
4 ZF9CW 0.0025 3,973 9
5 OQ5M 0.0025 1,190 2
6 KA1ZD 0.0026 381 0
7 PY2UD 0.0028715 1
8 LY9A 0.0028 711 1
9 UW2M 0.0029 1,050 2
10 M0MCV 0.0029 1,049 2

2018 CQ WW CW -- weighted mean values of $p_{bust}$ (run)
Position Call weighted mean $Q_v$ $B$
1 HB9ARF 0.0008 1,139 0
2 K8CX 0.0012 800 0
3 EU4E 0.0012 772 0
4 YU0A 0.0012 770 0
5 OH8X 0.0013 2,322 2
6 ZR2A 0.0013 1,485 1
7 R7MM 0.0014691 0
8 UA9LAO 0.0014 682 0
9 DF3AX 0.0015 629 0
10 DK2GZ 0.0017 573 0

We can also look at the changes over the period from 2005 to 2018.

First for all QSOs:

For non-run QSOs:

And for run QSOs: