R3DNB — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: European Russia Most frequent locator attributed to this token: KO85

Receiver-side FT8 activity involving R3DNB, decoded by SO8OO in southeastern Poland. 99 FT8 messages attributed to this token as transmitter, on 80m, 40m, across 8 UTC dates in the available aggregate history. Observed between 2026-09-05 and 2026-10-01.

These are automated observations at the SO8OO receiver, not an official contact log. Times are UTC. Attribution follows decoded FT8 message structure: CQ uses the first token and directed-looking messages use the second. Free text that resembles a directed message can be attributed imperfectly. Summary S/N reflects propagation plus SO8OO receiver, antenna and local-noise conditions. Counts are not adjusted for monitoring outages; transmissions that were not decoded are absent. Inferred entity and location data may be inaccurate for portable, remote or special-event operation.

SO8OO decoded 99 FT8 messages attributed to R3DNB as the transmitting token by decoded message structure across 8 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (79%), followed by 80 m (21%). Most decodes (81%) fell within the six-hour window 21:00-03:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's weak S/N range (64%); the estimated median was -18 dB.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-18 dB

Estimated median S/N

Bands

80m · 21 40m · 78

First attributed message: 2026-09-05
Last attributed message: 2026-10-01 01:24 UTC

Observed FT8 message patterns

Attributed sample: 99 messages
Active dates: 8 UTC dates
Estimated median S/N: -18 dB
Estimated 10th-90th percentile: -24 to -10 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 63, moderate (-15 to -9 dB) 34, strong (≥ -8 dB) 2.

WSJT-X defines S/N reports against a 2,500 Hz reference noise bandwidth. The ranges above are SO8OO receiver-side display categories, not official WSJT-X classes, transmitter-power measurements or estimates of how easy the station is to hear elsewhere. Statistics include only successful decodes on SO8OO's monitored FT8 channels; transmissions that were not decoded are absent.

Frequent counterpart tokens observed at SO8OO

Tokens most often paired with R3DNB in decoded directed-looking exchanges:

DK7ZT · Fed. Rep. of Germany ×2 RL3K · European Russia ×2 UA4FKT · European Russia ×2 YO4NF · Romania ×2 4X1UF · Israel 9A1CCB · Croatia 9A5CW · Croatia CT7AUT · Portugal DL3MIB · Fed. Rep. of Germany EU1KI · Belarus F1PBZ · France G6IBO · England

Attributed messages by UTC hour

Rolling 90-day UTC chart window. Counts follow decoded message structure: the first token for CQ, or the second token in a directed-looking message.

Most frequent locator attributed to R3DNB

The map compares the centres and boundaries of the locator field attributed to this token by decoded message structure, 2° × 1° as a Maidenhead square, and SO8OO's six-character receiver square. The separation is not an exact antenna-to-antenna distance or a radio-path length.

Attributed locator: KO85 · 64 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,193 km (approx.)
Last such locator decoded: 2026-10-01 01:23 UTC

A decoded locator can describe portable, remote or special-event operation and is not proof of a permanent station address or transmitter identity.

Observed FT8 exchanges

S/N cells show: decoded at SO8OO / report transmitted by the counterpart. An observed exchange is not a QSL or an official logbook confirmation.

Time UTC	Band	R3DNB S/N	Counterpart	Counterpart S/N	Msgs	Capture
10-03 05:23	40m	- / -5	R1AV	-16 / -	3	✓ Closing fragment
10-01 02:14	40m	- / -7	RU6UR	-22 / -	2	✓ Closing fragment
10-01 01:23	80m	-9 / -15	RN2F	-2 / -14	5	✓ Full exchange observed
09-29 22:16	80m	- / -17	RM5F	+11 / -	3	✓ Closing fragment
09-29 22:15	80m	- / 0	R5BM	+1 / -	3	✓ Closing fragment
09-29 22:11	80m	- / -1	UA4FKT	+2 / -	3	✓ Closing fragment
09-29 21:58	40m	- / -13	PI4TX	-4 / -	4	✓ Closing fragment
09-27 23:45	40m	- / 0	F1PBZ	+2 / -	2	✓ Closing fragment
09-27 23:45	40m	- / -7	OS4K	-16 / -	2	Partial capture
09-27 23:33	40m	- / -19	A61DD	-12 / -	10	Partial capture
09-25 20:40	40m	- / -14	R7RDE	-10 / -	3	✓ Closing fragment
09-25 20:38	40m	-22 / -19	9A5CW	-5 / -7	3	✓ Full exchange observed
09-25 20:23	80m	- / +3	RD4CAF	-10 / -	2	✓ Closing fragment
09-25 20:20	80m	- / -14	YO4NF	+2 / -	2	✓ Closing fragment
09-25 20:15	80m	- / -20	R6FX	-14 / -	6	✓ Closing fragment
09-25 15:42	40m	- / -13	LZ2SPD	-8 / -	4	✓ Closing fragment
09-25 15:40	40m	- / -22	9A1CCB	+2 / -	3	✓ Closing fragment
09-25 15:40	40m	- / -8	RU3OH	-14 / -	4	✓ Closing fragment
09-25 15:39	40m	- / -10	R7LC	-3 / -	3	Partial capture
09-21 21:48	40m	- / -13	ON3MOH	-3 / -	2	✓ Closing fragment
09-15 20:30	80m	- / -16	RA3QH	-13 / -	2	✓ Closing fragment
09-15 20:28	80m	- / -12	R3PLA	-3 / -	3	✓ Closing fragment
09-15 20:15	80m	- / -	RA3PGR	-14 / -	2	✓ Closing fragment
09-15 20:11	80m	- / -9	R5BM	-7 / -	4	Partial capture
09-15 20:07	80m	- / -10	R4FDK	-11 / -	5	✓ Closing fragment
09-15 20:07	80m	- / -15	RA3TVW	-10 / -	2	Partial capture
09-13 17:18	40m	- / -22	EW8CW	-1 / -	2	Partial capture
09-13 17:10	40m	- / -11	R7MP	-8 / -	2	✓ Closing fragment
09-13 15:41	40m	- / -	UA3NFG	-23 / -	2	✓ Closing fragment
09-13 15:36	40m	- / -9	R4MA	-1 / -	2	✓ Closing fragment
09-13 04:06	40m	- / -17	UA4FKT	-5 / -	4	✓ Closing fragment
09-13 03:37	40m	- / -16	RD4HX	-15 / -	4	✓ Closing fragment
09-11 17:31	40m	- / -7	R6ODC	-9 / -	3	✓ Closing fragment
09-11 17:21	40m	- / +2	RV4CC	0 / -	2	✓ Closing fragment
09-10 03:56	40m	- / -16	RZ6L	-3 / -	3	✓ Closing fragment
09-09 18:32	40m	- / -10	YO6LM	-1 / -	3	✓ Closing fragment
09-09 18:01	40m	- / -13	R2DX	-4 / -	2	✓ Closing fragment
09-09 17:58	40m	- / -	DJ0MAB	-3 / -	3	Partial capture
09-09 17:55	40m	- / -8	R6DJR	-2 / -	2	✓ Closing fragment
09-07 19:20	40m	- / -15	OE6TNO	0 / -	10	Partial capture
09-07 18:45	40m	- / -	OE8PIT	0 / -	4	Partial capture
09-07 18:40	40m	- / -	US1EA	-10 / -	2	Partial capture
09-07 18:37	40m	-22 / -9	R6TA	-4 / -	3	✓ Closing observed
09-07 18:30	40m	- / -6	RU4SS	-7 / -	2	Partial capture
09-07 17:12	40m	-24 / -	RJ6ON	+2 / -	2	✓ Closing observed
09-07 17:10	40m	- / -3	UA3PAB	+7 / -	3	✓ Closing fragment
09-07 17:07	40m	- / -10	R6DZR	-2 / -	4	✓ Closing fragment
09-07 17:07	40m	- / -12	R3DMS	-1 / -	3	✓ Closing fragment
09-07 16:50	40m	- / -5	RA3V	-14 / -	2	✓ Closing fragment
09-07 16:25	40m	- / -3	UB3YGA	+3 / -	3	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

Frequency values are decoder audio offsets in hertz, not RF frequencies.

40m

UTC    dB Audio  Message
234645 -14 1632  R3DNB OS4K -07
214300  -7 2746  R3DNB MI0OBC -13
215845  -5 2287  R3DNB PI4TX JO22 (x4)
015315 -21 1727  R3DNB GM6URC -12
020000 -14 1489  R3DNB CT7AUT RR73
021400 -20 1814  R3DNB RU6UR -07 (x2)
052300  -6 2513  R3DNB YL2KF RR73
052330 -11 2185  R3DNB R1AV KP50 (x3)
053030 -21 2186  R3DNB RW6HPS -06

80m

UTC    dB Audio  Message
221215  +3 2056  R3DNB UA4FKT R-01 (x2)
221545  -1 1704  R3DNB R5BM KO85 (x2)
221645 +10  559  R3DNB RM5F KO85
221645  -2 1704  R3DNB R5BM 73
221715 +11  559  R3DNB RM5F R-17 (x2)
221900 -18 2352  CQ R3DNB KO85
012200 -12 1741  Z61DX R3DNB KO85
012300 -11 1741  RN2F R3DNB KO85
012315  -4 2249  R3DNB RN2F -15
012330 -11 1741  RN2F R3DNB R-14
012345  -1 2249  R3DNB RN2F RR73
012400  -4 1741  RN2F R3DNB 73

Decoder S/N history by band

Count-weighted daily averages across messages attributed to this profiled token and successfully decoded at SO8OO, limited to the rolling 90-day UTC chart window.

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