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+	55009	-
100+	6829	-
200+	2543	-
300+	1163	-
400+	679	-
500+	413	-
600+	279	-
700+	197	-
800+	109	-
900+	87	-
1000+	64	-
1100+	41	-
1200+	33	AK4JA NM1I RW3WP IZ2XAO WA9VEE RW7F M0ISZ EA6NB WB4AEG PY1ZB DL4QB KC3MIO 4O4T G4XRV I4CKC R1BFL EW7LO F8DGY JK1XDX UA1AJ YL2AG MM3AWD AA3B SM6PDS HA2EOU I1OXO DL5YM LZ1QI GD0OUD F5MA KD9CK DL5CL K3WW
1300+	22	ON7PQ N4OW IK0FNH DL2HRF JA9LNZ 9Z4Y WB6ZFG DL5FCZ LZ2UR EB4IC JH7IXX S58MU UR3QX HB9AW Z39M BH4EEL K7FD G4LNA K4IBZ KW7D F8FAZ RK3ER
1400+	19	F6HK OY1CT DK7AK SM7ZDI KA6IOM KD8JDC IK0YVV IZ2MGN JA3DLE/1 DL50NFA DK2FE HA5AEK LY2PX IK0IXI SM2FIJ UR5BIZ EU8F NA5G OK1HB
1500+	19	IN3GYO G4ZXN IW9HKM K2KRG IS0ESG DJ1YFK KB1CL DJ6IH YL3AJT LZ2PP EW1CY JA7BSF EA8DHV WB0B IT9QAU VE3BXG OZ2A N5PHT SM5COP
1600+	7	KB4JR SV2BBK DK5CCA W5BIB K7NWS DL2DX JH5UVK
1700+	8	G0GKH IU0JFZ W4CI RU3X Z33A UN7NFD SM6OID G4IWO
1800+	12	DL2IAD RK4CT IZ0XZD KP4TF V31MA VE2PID OK2RZ N4QA LB6GG DM0R N2KW HB9CVN
1900+	4	SP9WZJ YO4VM G4PVM JF6DMT
2000+	5	PA2F DD5XX W4MQC DM2DZM F5PLC
2100+	5	HB9DAX IZ3SOI US5XD G4AWW S59NS
2300+	4	F6HKA YU7QF R7NO S59N
2400+	3	UT5NR DL3NAA DK1WI
2500+	3	LA1MFA K4YFH LZ7DL
2600+	1	SM5IMO
2700+	4	DK4AN ON4ADI DK8IT F5IN
2800+	1	AE5ZH
2900+	3	F4GFT SQ6JAN OV1CDX
3100+	1	W8KR
3200+	2	K5LY SQ6LDP
3300+	2	DM2BRF OK1LW
3400+	1	DL5UZ
3600+	1	AL7JK
3900+	2	IU0HMB VE3NFN
4000+	1	GW4OKT
4200+	1	DK5JPL
4300+	1	W5ZO
4400+	2	N3HI G4RMV
4600+	1	DL5YAD
5900+	1	DJ6ZM
7400+	1	WR5U

Unique active calls: 67583. 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: 5209866 from 67583 individual calls.

In order to fulfil the rule, 80% of 5209866 hours (= 4167893h) would have to be produced by 20% of 67583 stations (= 13517).

As of today, those 20% generated 1676212 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...)