R3WDW — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: European Russia Most frequent locator attributed to this token: KO81

Receiver-side FT8 activity involving R3WDW, decoded by SO8OO in southeastern Poland. 2,524 FT8 messages attributed to this token as transmitter, on 40m, 20m, 10m, across 64 UTC dates in the available aggregate history. Observed between 2026-06-07 and 2026-09-15.

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 2,524 FT8 messages attributed to R3WDW as the transmitting token by decoded message structure across 64 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (93%), followed by 20 m (6%) and 10 m (1%). Most decodes (76%) fell within the six-hour window 13:00-19:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (80%); the estimated median was 0 dB.

Overview

2,524

Messages attributed

UTC dates decoded

374

Active 15-min windows

0 dB

Estimated median S/N

Bands

40m · 2,354 20m · 150 10m · 20

First attributed message: 2026-06-07
Last attributed message: 2026-09-15 16:10 UTC

Observed FT8 message patterns

Attributed sample: 2,524 messages
Active dates: 64 UTC dates
Estimated median S/N: 0 dB
Estimated 10th-90th percentile: -13 to +11 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 154, moderate (-15 to -9 dB) 346, strong (≥ -8 dB) 2,024.

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 R3WDW in decoded directed-looking exchanges:

RA3VMK/P · European Russia ×3 RX9WM · Asiatic Russia ×3 TA3NK · Asiatic Turkey ×3 UB3ADO/P · European Russia ×3 R6XW · European Russia ×2 RD9U · Asiatic Russia ×2 F1PBZ · France ×2 IK4LZH · Italy ×2 R2EA/P · European Russia ×2 DL1EDR · Fed. Rep. of Germany ×2 DL1MPL · Fed. Rep. of Germany ×2 EA5HM · Spain ×2

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 R3WDW

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: KO81 · 1,390 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,083 km (approx.)
Last such locator decoded: 2026-09-15 16:10 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	R3WDW S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-15 16:09	40m	-4 / -	R7FQ	- / -2	3	Partial capture
09-15 16:06	40m	- / -	DK4RH	-7 / -	7	Partial capture
09-15 16:04	40m	+14 / -	UB3AMO	-4 / -2	4	✓ Closing observed
09-15 15:51	40m	+1 / -10	RN3QTA	+8 / -	4	Partial capture
09-15 15:48	40m	+4 / -	R2DP	-4 / +7	3	✓ Closing observed
09-15 15:44	40m	-1 / -	RA9HM	- / +1	4	✓ Closing fragment
09-15 15:43	40m	-3 / -	R3TS	-7 / +8	3	✓ Closing observed
09-15 15:42	40m	0 / +4	UA3DUJ	-21 / +7	4	✓ Full exchange observed
09-15 15:40	40m	+4 / -	R3NAW	- / -13	4	Partial capture
09-15 15:37	40m	+3 / -	UA3FO	- / -	3	Partial capture
09-15 15:35	40m	-4 / -1	RA3S	+12 / -	4	✓ Full exchange observed
09-15 15:34	40m	+3 / -10	RT7KM	-8 / +3	4	✓ Full exchange observed
09-14 18:00	40m	+6 / -	RW4HRE	- / -10	4	✓ Closing fragment
09-14 17:58	40m	+9 / -8	R6DHI	-10 / -3	5	✓ Full exchange observed
09-14 17:56	40m	+8 / -14	SV1DKR	-1 / -	4	✓ Closing observed
09-14 17:53	40m	+6 / -	RA3ZH	- / -	2	Partial capture
09-14 17:50	40m	+11 / -	R2PU	- / -24	3	Partial capture
09-14 17:11	40m	-2 / -8	RJ6ON	-2 / -21	4	✓ Full exchange observed
09-14 17:08	40m	+3 / -	R8UJ	- / -5	5	✓ Closing fragment
09-14 16:57	40m	+8 / 0	LY2BSW	-3 / +6	5	✓ Full exchange observed
09-14 16:54	40m	+8 / -	R8AGF	- / -24	5	✓ Closing fragment
09-14 16:48	40m	+5 / -16	RW3VR	+3 / -7	7	✓ Full exchange observed
09-14 16:45	40m	+3 / -	R3NAW	- / -	3	Partial capture
09-14 16:37	40m	+6 / -	UB8CQJ	- / +6	10	Partial capture
09-14 16:20	40m	+5 / -	R1QF/P	- / +8	11	✓ Closing fragment
09-14 16:17	40m	+9 / -11	RL8C	-10 / +9	4	✓ Full exchange observed
09-14 16:09	40m	+12 / -	R1QF/P	- / -	15	Partial capture
09-14 16:04	40m	-1 / -	R9WCH	- / +3	5	✓ Closing fragment
09-14 14:25	40m	+5 / -	RU3AMO	-8 / +8	5	✓ Full exchange observed
09-14 14:14	40m	-7 / -	RX3OL	- / -	3	Partial capture
09-14 14:10	40m	-8 / -	RA4DAL	- / -	2	✓ Closing fragment
09-14 14:08	40m	-9 / -	R2PE	- / -	2	Partial capture
09-14 13:39	40m	- / +5	R70SAB	-2 / -	2	✓ Closing fragment
09-14 13:36	40m	-14 / -	R9FGJ	- / -17	2	✓ Closing fragment
09-14 13:34	40m	-12 / -	R70SAB	- / -	2	Partial capture
09-13 11:11	40m	-9 / -	UB6LUR	- / +4	3	✓ Closing fragment
09-13 10:35	40m	-12 / -	RK3DJW	-15 / +8	3	✓ Closing observed
09-13 10:28	40m	-16 / -	R6LPF	- / -1	3	✓ Closing fragment
09-13 10:27	40m	- / -	HA8BMP	-9 / -	2	Partial capture
09-13 10:22	40m	-16 / -	RA7E/P	- / +7	3	Partial capture
09-12 16:59	40m	+7 / -	R1BDX	-7 / -6	3	✓ Closing observed
09-12 16:53	40m	-8 / -	UB8CQJ	- / -	3	Partial capture
09-12 16:44	40m	+9 / -	UB8CQJ	- / -	4	Partial capture
09-12 16:29	40m	0 / -	UC6W	- / -	4	Partial capture
09-12 16:27	40m	+9 / -11	RX3RZ	+8 / -5	5	✓ Full exchange observed
09-12 16:24	40m	+2 / -	UB6LWY	- / -9	3	✓ Closing fragment
09-12 16:22	40m	+6 / -	R6AM	- / +2	2	Partial capture
09-12 16:18	40m	- / -	R6AM	-11 / -	3	Partial capture
09-12 16:17	40m	+9 / -	R2DDA	- / -	3	Partial capture
09-12 16:13	40m	+7 / +2	RU3ACA	-6 / -10	7	✓ Full exchange observed

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
160445  -4 2910  R3WDW UB3AMO KO85
160500 +13 2910  UB3AMO R3WDW -02 (x2)
160545  -5 2910  R3WDW UB3AMO 73
160600 +11 2910  CQ R3WDW KO81
160615  -5 2910  R3WDW DK4RH JO31 (x7)
160945  +0 1539  R7FQ R3WDW KO81 (x3)

20m

UTC    dB Audio  Message
120030 -11  956  RW9CC R3WDW +16
120430 -11  862  R9HAK R3WDW 73
134815 -13  838  CQ R3WDW KO81 (x2)
101100 -10 1782  R3WDW PD1HPB JO22 (x10)
041400 -14 2165  R3WDW RL4R RR73

10m

UTC    dB Audio  Message
054830  -1 1321  RA3ZGT R3WDW RR73
054845  +3  806  R3WDW RA3ZGT 73
055045  -6 1309  R6FMF R3WDW -06 (x2)
055200 -12  884  R3WDW R6FMF R+04
055215  +1 1308  R6FMF R3WDW RR73
055230 -12  884  R3WDW R6FMF 73
055345  -4 1305  RK4H R3WDW -04 (x2)
082200 -20 1036  R3WDW R6XW RR73
082230  -4 2584  R3WDW IQ4JO JN63
071245  +2  913  R3OR R3WDW -16 (x4)

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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