Most-Logged Stations in CQ WW CW and SSB Contests: 2020, and the decade from 2011 to 2020

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 2020, the ten stations with the largest number of appearances in CQ WW SSB logs were:

Callsign	Appearances	% logs
LZ9W	9,916	53
YT5A	9,459	55
DF0HQ	9,248	53
II2S	7,000	46
ES9C	6,951	45
RL3A	6,890	46
EA8RM	6,795	43
LZ5R	6,591	44
UB7K	6,565	43
E7DX	6,459	41

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, for example, if a station worked LZ9W on six bands, that will increment the value in the second column of the LZ9W 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 2020 were:

Callsign	Appearances	% logs
CR3W	14,512	69
LZ9W	11,614	67
YT5A	11,190	65
TI7W	9,471	48
ZF1A	9,157	47
LN8W	8,993	55
CR6K	8,563	49
RM9A	8,476	51
LZ5R	8,332	54
OM7M	8,251	55

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 2011 to 2020 on SSB we find:

Callsign	Appearances	% logs
LZ9W	89,249	55
CN3A	81,518	53
DF0HQ	80,576	53
PJ2T	66,941	41
K3LR	66,338	46
OT5A	64,399	43
A73A	62,605	43
P33W	62,540	43
HG7T	60,871	44
TM6M	58,211	43

And for the same years on CW:

Callsign	Appearances	% logs
LZ9W	102,880	66
9A1A	97,305	61
PJ2T	88,148	52
P33W	78,611	52
DF0HQ	78,010	53
W3LPL	74,284	49
K3LR	70,112	48
LZ5R	69,355	53
PJ4A	67,404	48
ES9C	67,220	45