RBN activity statistics

Charts of RBN activity, active callsigns and (tbd) more stuff. A work in progress.

Histogram: Active hours of individual callsigns (last 365 days)

Active hours	Count	Calls
10+	52847	-
100+	7106	-
200+	2572	-
300+	1320	-
400+	750	-
500+	454	-
600+	314	-
700+	210	-
800+	162	-
900+	92	-
1000+	71	-
1100+	55	-
1200+	46	-
1300+	38	-
1400+	22	PA5XM WB4AEG EA8DHV DM6EE IZ5BBS UT5XS HA5AEK G4ZXN SM6PDS EW1CY KA6IOM LZ1QI IZ0XZD PI75ZUT SM2FIJ DK2FE YT5FD I1YRL JA3DLE/1 EU8F K4UX VE3FGU
1500+	15	VE3BXG DK7AK IK6JOT SM6OID BG6GQE UN7NFD OY1CT JA7BSF W8KJP RW3WP 9A2AJ DJ6IH F6HK YO4VM PB7RS
1600+	14	IK0YVV Z33A DJ1YFK SM5COP YL3AJT HA2EOU IW9HKM KB1CL KB4JR BH4EHU SV2BBK IT9QAU KD8JDC DL5FCZ
1700+	8	4O4T PA2F DL2DX HB9CVN W4CI SP3CW PY2UDB LY2PX
1800+	9	DL2IAD IK3VUT IU0JFZ G4PVM OK1HB IK5VLL ON7PQ N2KW F8FAZ
1900+	6	YU7QF IK0FNH G0GKH W4MQC Z39M KP4TF
2000+	3	N4QA IZ2MGN RK4CT
2100+	4	WB0B G4IWO JF6DMT SM5IMO
2200+	3	DK5CCA DM2DZM F5PLC UT5NR
2300+	8	DL3NAA DK1WI ON4ADI W8KR IZ3SOI SQ6LDP OK1LW DK5CCA
2400+	7	OZ2A SQ6JAN V31MA G4RMV LZ7DL F6HKA SP95IARU
2500+	5	LB6GG HB9DAX K4YFH LA1MFA PY1ZB
2600+	1	LZ2PP
2700+	3	DK4AN F5IN DK8IT
2800+	2	K5LY N4OW
2900+	2	W5ZO OV1CDX
3300+	1	AE5ZH
3600+	3	F4GFT GW4OKT DL5UZ
3900+	1	W5BIB
4000+	1	DK5JPL
4100+	1	IU0HMB
4200+	3	K7NWS AL7JK DM2BRF
4800+	1	VE3NFN
5000+	1	DL5YAD
5300+	1	N3HI
7500+	1	DJ6ZM
8000+	1	WR5U

Unique active calls: 66164. Note that beacons and frequently "busted" callsigns like T2DE were not included here.

How many hams generate how much activity?

Does the Pareto principle ('80/20 rule') hold true for RBN spots?

As of today, the total number of activity hours (i.e. hours in which individual callsigns were spotted, with a lower threshold of 10 hours over the last year) registered by the RBN is: 5502756 from 66164 individual calls.

In order to fulfil the rule, 80% of 5502756 hours (= 4402205h) would have to be produced by 20% of 66164 stations (= 13233).

As of today, those 20% generated 1742381 hours of activity... Sorry, Pareto!

(Note: The minimum activity per callsign and year was 10 hours. If this threshold was increased to a more reasonable value, the 80/20 rule may hold true...)