Most-Logged Stations in CQ WW CW and SSB Contests: 2019, and the decade from 2010 to 2019

The public CQ WW CW and SSB logs allow us easily to tabulate the stations that appear in the largest number of entrants' logs. For 2019, the ten stations with the largest number of appearances in CQ WW SSB logs were:

Callsign	Appearances	% logs
EF8R	11,916	67
D4C	10,791	64
CN3A	9,720	60
LZ9W	8,558	54
PJ4K	8,094	51
YT5A	7,886	52
M6T	7,823	53
FY5KE	7,223	47
DF0HQ	7,189	50
V26B	7,050	46

The first column in the table is the callsign. The second column is the total number of times that the call appears in logs. That is, if a station worked CN3A on six bands, that will increment the value in the second column of the CN3A row by six. The third column is the percentage of logs that contain the callsign at least once.

Similarly, the ten stations with the largest number of appearances in CQ WW CW 2019 were:

Callsign	Appearances	% logs
EF8R	14,077	78
CN3A	11,507	70
LZ9W	10,666	69
9A1A	10,557	70
PJ2T	10,224	60
PJ4K	9,936	61
CR3W	9,880	63
YT5A	9,686	67
M6T	8,969	62
TI7W	8,626	52

Note the substantial difference between the SSB and CW tables.

I find it interesting to see which stations have had the most long-term activity on the contests. For the ten years from 2010 to 2019 on SSB we find:

Callsign	Appearances	% logs
CN3A	89,295	60
LZ9W	86,369	55
DF0HQ	78,486	53
PJ2T	72,914	46
OT5A	70,291	50
K3LR	69,446	48
P33W	67,993	49
A73A	66,582	47
EF8R	62,665	42
V26B	60,996	42

And for the same years on CW:

Callsign	Appearances	% logs
9A1A	105,580	69
LZ9W	100,056	66
PJ2T	95,893	58
DF0HQ	86,035	61
P33W	85,470	59
W3LPL	75,857	51
K3LR	74,648	51
PJ4A	71,625	51
LX7I	66,663	50
D4C	65,164	40