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. 89 FT8 messages attributed to this token as transmitter, on 80m, 40m, across 4 UTC dates in the available aggregate history. Observed between 2026-09-05 and 2026-09-09.

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 89 FT8 messages attributed to R3DNB as the transmitting token by decoded message structure across 4 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (82%), followed by 80 m (18%). Most decodes (83%) 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 · 16 40m · 73

First attributed message: 2026-09-05
Last attributed message: 2026-09-09 18:25 UTC

Observed FT8 message patterns

Attributed sample: 89 messages
Active dates: 4 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) 57, moderate (-15 to -9 dB) 31, strong (≥ -8 dB) 1.

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 4X1UF · Israel DL3MIB · Fed. Rep. of Germany EU1KI · Belarus G6IBO · England IU2HUQ · Italy OE3PBS · Austria OH2MA · Finland OK1WCF · Czech Republic PA0KGB · Netherlands PE1NPS · Netherlands

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 · 58 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,193 km (approx.)
Last such locator decoded: 2026-09-09 18:25 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
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
09-07 02:35	80m	-19 / -15	DK7ZT	+10 / -14	5	✓ Full exchange observed
09-07 02:34	80m	- / -8	OH6QU	+8 / -	2	✓ Closing fragment
09-07 01:58	40m	- / -17	R9WCK	-10 / -	3	✓ Closing fragment
09-07 01:48	80m	- / -	RD3MF	-1 / -	2	✓ Closing fragment
09-07 01:46	80m	- / -17	RW9WJ	-5 / -	3	✓ Closing fragment
09-06 22:46	40m	-14 / -	SP5EXA	+2 / +4	7	Partial capture
09-06 22:44	40m	- / -20	PD0LBY	-2 / -	2	Partial capture
09-06 22:09	80m	- / -23	RL3K	-17 / -	5	✓ Closing fragment
09-06 21:57	40m	-10 / -	SP7TF	- / -6	2	Partial capture
09-06 21:52	40m	- / -11	SV5BYP	+3 / -	2	✓ Closing fragment
09-06 21:36	40m	- / -8	RJ6L	-7 / -	3	✓ Closing fragment
09-06 21:30	40m	- / -10	RN6MA	+5 / -	2	✓ Closing fragment
09-06 21:23	80m	-20 / -22	RA3WPF	-4 / -	6	✓ Closing observed
09-06 21:21	80m	-24 / -7	UB3ANV	-9 / -	5	✓ Closing observed
09-06 21:19	80m	-24 / -	RA3WPF	+3 / +3	4	Partial capture
09-06 21:17	80m	-24 / -19	R3VA	+2 / -	4	✓ Closing observed
09-06 21:05	80m	- / -8	RU3DK	+8 / -	2	✓ Closing fragment
09-06 21:01	80m	- / +2	R2BRU	-12 / -	3	✓ Closing fragment
09-06 20:59	80m	- / -20	OZ7CL	-6 / -	2	✓ Closing fragment
09-06 20:32	40m	- / -17	EU1KI	-3 / -	2	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

80m

UTC    dB Audio  Message
200800 -14 1242  R3DNB R4FDK LO23 (x4)
201100  -5 1181  R3DNB R5BM KO85 (x4)
201500 -18  805  R3DNB RA3PGR KO84 (x2)
202845  +1  603  R3DNB R3PLA KO84 (x3)
203015 -11 2437  R3DNB RA3QH -16 (x2)

40m

UTC    dB Audio  Message
040600  -4 1642  R3DNB UA4FKT LO23 (x4)
153600  +0 2052  R3DNB R4MA -09 (x2)
153930 -13 1915  R3DNB RK4UZ R-22
154100 -24 2046  R3DNB UA3NFG LO28 (x2)
170500 -11 1797  R3DNB R1TAX -13
171000 -10 1657  R3DNB R7MP -11 (x2)
171830  +0 1913  R3DNB EW8CW KO52 (x2)
171845  -2  919  R3DNB UA3GJM -20

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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