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+	54835	-
100+	6382	-
200+	2342	-
300+	1095	-
400+	564	-
500+	358	-
600+	254	-
700+	152	-
800+	109	-
900+	64	-
1000+	42	-
1100+	49	-
1200+	36	-
1300+	22	KB1CL SM5COP OM0MVC 4Z5FW N4PG IU0HMB SV2BBK W6PU F6IJU LA2HFA AA3B HA6PQ YL2AG M6MPC K6AAQ SM6PDS RK3ER UR4MKK HA5AEK JH7IXX HL2BM KD8ZM
1400+	14	W7D A4MC DB25ONN LY2PX G0GKH UR5BIZ KB4JR G4ZXN F6HK IZ2QXG G4LNA OK1IF W4CI WA9V
1500+	8	LZ7DL W4MQC K5LN F5PLC WB7UBC EW1CY US5XD U0JFZ AA4MC
1600+	13	VE3BXG NA5G IK3OTW/R EA1XN OK1HB SM5IMO RK4CT N5PHT DL2IAD UN7NFD WA9VEE JH5UVK LZ7DL
1700+	7	EB4IC DJ6ZM VE2PID KW7D F5NZY DM2DZM K7FD
1800+	3	DL3NAA SP9WZJ W7AIT
2000+	4	YO4VM LA1MFA JF6DMT IZ3SOI
2100+	4	KP4TF G4RMV RU3X F6HKA
2200+	3	Z33A W5ZO IU0JFZ
2300+	3	UT5NR G4PVM YU7QF
2400+	2	DL5UZ HB9DAX
2500+	1	DK1WI
2600+	3	DK8IT F4GFT R7NO
2700+	4	SQ6JAN F5IN ON4ADI K5LY
2800+	2	GW4OKT DK4AN
2900+	1	OK1LW
3200+	1	OV1CDX
3300+	1	DK5JPL
3700+	1	DL5YAD
4200+	1	OK2RZ
4300+	1	VE3NFN

Unique active calls: 66381. 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: 4786847 from 66381 individual calls.

In order to fulfil the rule, 80% of 4786847 hours (= 3829478h) would have to be produced by 20% of 66381 stations (= 13276).

As of today, those 20% generated 1581089 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...)