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+	69662	-
100+	7576	-
200+	2652	-
300+	1351	-
400+	709	-
500+	425	-
600+	244	-
700+	205	-
800+	135	-
900+	93	-
1000+	65	-
1100+	39	-
1200+	24	WB0RLJ RA8AT K5ISS JA5EWQ SA6AUT JA0IKP JR3OQJ DL7DAX VU2OR VK2ARZ IZ3ZVO SM7FCU IK6JFF F5POJ DL8KUD N0AMY/B I1GIS JS6UWQ K4RUM N4TTU ZA1EM NI4E W8XAL OK2BEI
1300+	20	IT9DNW W8FJ EA1FCL DJ3GS G0GKH BG2TFW OS5Z KC8TQP LU1QAK PA3AAV W4MQC JS2OVO KC7NBM OY1C W3RJ IN3KLQ K4IBZ F4AGV JA0KSB IK3/UY7LA
1400+	16	LZ2PP DO1EK AI5IN PY2XL WC1D OE9SBD SO9PC SM5COP CT1BMW DL2HRF DL3AZ DF9II G3XIZ UG4A HA6NL PY2VA
1500+	13	JN1RKE AB4I KB8UGP DM2BRF DJ4GX EU4E M5IMO JJ0TJS M0LRQ RX6MY T4EI K5VR HS0EDP
1600+	14	K4U JF6DMT JM7OLW K4MW DK1VD IT9QAU G4HOM N3TWX R8MC W4CI W8BJO SM2ELN DK1WI NE5A AA2AN/B
1700+	8	IW9HKM LY2PX HB9DAX SO5CW VE3OZO EA6EJ NN0D K4U
1800+	5	WP3Y SM6OID IZ5BBS EE5EE IK5VLL
1900+	5	DL3EL F5PLC YO9KWC SP6CW EA4JI
2000+	5	OK1CF M0PKD R3ZBI WX7V LU4JJ
2100+	3	F5IN R1OA G4PVM
2200+	5	AA7FV UR3QX UX0DA N9QU WS1L
2300+	3	DM2DZM DJ6ZM OV1CDX
2400+	1	JM1IKW
2500+	3	ON7PQ DK9PY G5VZ
2600+	4	EA1EYL DK7AK DK4AN K4UX
2700+	2	PY2XW WZ2J
2800+	2	PY2UDB OH3GD
2900+	2	OY1CT EA3CC
3000+	1	KY4GS
3100+	5	CT1GFK WB5N OK1LW LZ3AN W1AW
3200+	3	F8BCU DK8IT SM5HQN
3300+	1	PA5XM
3400+	2	SM5IMO VU2JCD
3500+	2	IN3TWX WA8VTD
3600+	1	JR3OYH
3700+	2	JA1GZV IT9JLX
3900+	1	DM5EA
4100+	1	VE3NFN
4300+	1	DL5YAD
4400+	1	DF6YT
4600+	2	N8TGQ DL6AAF
5300+	3	YO9CMC WB4AEG JR6JGB
5700+	1	JH6LDY
5900+	2	KA2QPG CT1EXR
6100+	1	DK5JPL
7400+	1	DL8NBM
7700+	1	DF2JP
8600+	2	YO4BEX YO4GOU

Unique active calls: 83325. 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: 5904275 from 83325 individual calls.

In order to fulfil the rule, 80% of 5904275 hours (= 4723420h) would have to be produced by 20% of 83325 stations (= 16665).

As of today, those 20% generated 1909003 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...)