R2SBI — reception at SO8OO

Signals decoded by SO8OO in southeastern Poland. FT8 and CW have separate histories; all times are UTC.

FT8 activity

DXCC entity inferred from callsign: European Russia Most frequent locator attributed to this token: KO93

Receiver-side FT8 activity involving R2SBI, decoded by SO8OO in southeastern Poland. 1,166 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, 10m, across 52 UTC dates in the available aggregate history. Observed between 2026-06-08 and 2026-11-06.

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 1,166 FT8 messages attributed to R2SBI as the transmitting token by decoded message structure across 52 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (44%), followed by 40 m (36%) and 10 m (16%). Most decodes (86%) fell within the six-hour window 15:00-21:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (65%); the estimated median was -6 dB.

Overview

1,166

Messages attributed

UTC dates decoded

141

Active 15-min windows

-6 dB

Estimated median S/N

Bands

80m · 515 40m · 415 20m · 50 10m · 186

First attributed message: 2026-06-08
Last attributed message: 2026-11-06 19:37 UTC

Observed FT8 message patterns

Attributed sample: 1,166 messages
Active dates: 52 UTC dates
Estimated median S/N: -6 dB
Estimated 10th-90th percentile: -16.2 to +2 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 147, moderate (-15 to -9 dB) 261, strong (≥ -8 dB) 758.

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 R2SBI in decoded directed-looking exchanges:

TA3NK · Asiatic Turkey ×4 F1PBZ · France ×3 BG0FQU · China ×2 EU7DBF · Belarus ×2 EW4DX · Belarus ×2 R5AV · European Russia ×2 R8CW · Asiatic Russia ×2 R9FE · European Russia ×2 RA3ZGT · European Russia ×2 RA6OY · European Russia ×2 RU4SS · European Russia ×2 SP5KG · Poland ×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 R2SBI

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: KO93 · 532 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,246 km (approx.)
Last such locator decoded: 2026-11-06 19:37 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	R2SBI S/N	Counterpart	Counterpart S/N	Msgs	Capture
11-07 10:17	10m	- / -6	EA3AAY	-2 / -	3	✓ Closing fragment
11-07 10:11	10m	- / +2	EA1ARJ	-3 / -	7	✓ Closing fragment
11-06 19:35	80m	- / -	IK0CHU	-1 / -	3	Partial capture
11-06 19:35	80m	-20 / -	R6YG	-14 / -	2	✓ Closing observed
11-06 19:34	80m	-12 / -13	RA3FD	+12 / -7	5	✓ Full exchange observed
11-06 19:33	80m	-17 / -8	LZ3SD	+2 / -19	4	✓ Full exchange observed
11-06 19:29	80m	-13 / -5	R2FDU	+12 / -4	3	✓ Full exchange observed
11-06 19:27	80m	- / -13	RA3ICA	+12 / -	3	✓ Closing fragment
11-06 19:18	80m	-12 / -	DA6NEL	- / -20	3	✓ Closing fragment
11-06 19:13	80m	- / +2	UA1AJY	+2 / -	2	Partial capture
11-06 19:06	80m	-11 / -15	DL6UM	+5 / -22	7	✓ Full exchange observed
11-06 19:03	80m	-14 / -	RD4HX	-16 / -11	4	✓ Closing observed
11-06 19:00	80m	-18 / -	EX7DY	- / -16	2	✓ Closing fragment
11-06 18:58	80m	-11 / -17	RA0AF	-8 / -18	5	✓ Full exchange observed
11-06 18:53	80m	-14 / -20	F1PBZ	+1 / -18	5	✓ Full exchange observed
11-06 18:49	40m	- / -22	EA2ELH	-12 / -	3	✓ Closing fragment
11-05 18:52	80m	-5 / -6	YO2CR	+1 / -18	5	✓ Full exchange observed
11-05 18:50	80m	-5 / +1	R6LS	-4 / -	4	✓ Closing observed
11-05 18:48	80m	-3 / -5	R3DPZ	+1 / -	5	✓ Closing observed
11-05 18:44	80m	-13 / -	RC6BB	-12 / -18	7	✓ Closing observed
11-05 18:43	80m	-10 / -4	R7CD	+8 / -	3	✓ Closing observed
11-05 18:36	40m	- / -	ON7AC	-3 / -	5	Partial capture
11-04 17:40	80m	- / -	R3DPZ	-6 / -	3	Partial capture
11-04 17:32	80m	- / -18	YO4NT	-3 / -	2	Partial capture
11-04 17:28	40m	- / -	DM2CNE	-9 / -	3	Partial capture
11-02 19:09	80m	- / -12	R3DAJ	-5 / -	3	✓ Closing fragment
11-02 19:00	80m	-8 / -	RD4AAK	-24 / -1	3	✓ Closing observed
11-02 17:53	40m	- / -	R7KEO	-6 / -	2	Partial capture
11-01 18:21	80m	-22 / -	JF2XGF	- / -	3	Partial capture
11-01 18:19	80m	-17 / -24	Z62NS	+3 / -14	5	✓ Full exchange observed
11-01 18:11	80m	-8 / -2	UG4P	-16 / -3	5	✓ Full exchange observed
11-01 18:09	80m	-4 / -8	GI4SNA	-10 / -	4	✓ Closing observed
11-01 18:08	80m	-6 / -9	DK6ITM	+6 / -18	3	✓ Full exchange observed
11-01 18:05	80m	-6 / -	Z62NS	- / -	5	Partial capture
11-01 18:03	80m	- / -3	UB3YCK	-4 / -	2	✓ Closing fragment
11-01 17:57	80m	-9 / -4	RO2Z	+12 / -3	3	✓ Full exchange observed
11-01 17:50	80m	-8 / +1	RL3QGD	-10 / -	4	✓ Closing observed
10-31 18:25	80m	-15 / -	YL3PK	- / -	3	Partial capture
10-31 17:30	80m	-6 / -	R9XAC	-19 / -16	3	✓ Closing observed
10-31 17:27	80m	-6 / +2	RJ3DC	-12 / +1	4	✓ Full exchange observed
10-31 17:24	40m	-2 / -13	OH5KNL	+12 / -23	8	Partial capture
10-29 19:54	40m	-5 / -	VJ6X	- / -	3	Partial capture
10-29 19:51	40m	- / -	EA1KCN	-12 / -	2	Partial capture
10-29 19:50	40m	-6 / -	SP5KG	- / -1	2	✓ Closing fragment
10-29 19:49	40m	- / -	PI4TX	-5 / -	3	Partial capture
10-29 19:48	40m	-4 / -17	SV1ENG	0 / -12	5	✓ Full exchange observed
10-29 19:46	40m	-5 / -	BI3UPU	- / -18	3	✓ Closing fragment
10-29 19:44	40m	-8 / -	R5AV	- / -18	2	✓ Closing fragment
10-29 19:42	40m	- / -6	F1PBZ	0 / -	4	Partial capture
10-28 18:29	80m	-14 / -12	SP5GEO	+7 / -19	5	✓ Full exchange observed

Recent FT8 messages decoded at SO8OO

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

10m

UTC    dB Audio  Message
101900 -16 1090  CQ R2SBI KO93
114230  +6  499  R2SBI EB1LA IN73 (x3)
100100  -9  300  R2SBI R4PEP LO55
101100  -7  300  R2SBI EA1ARJ IN73 (x7)
101730  -1 1543  R2SBI EA3AAY JN11 (x3)

80m

UTC    dB Audio  Message
193315 -17  332  LZ3SD R2SBI -19
193330  -2  508  R2SBI LZ3SD R-08 (x2)
193430 +13  428  R2SBI RA3FD KO96
193515 -20  331  R6YG R2SBI RR73
193530 -14 2542  R2SBI R6YG 73
193530  -1 1289  R2SBI IK0CHU JN62 (x2)
193615 -10  332  RA3FD R2SBI -07
193630 +15  428  R2SBI RA3FD R-13
193630  -4 1290  R2SBI IK0CHU JN62
193645 -13  332  RA3FD R2SBI RR73
193700  +8  428  R2SBI RA3FD 73
193715 -11  332  CQ R2SBI KO93 (x2)

40m

UTC    dB Audio  Message
172500 -14  336  UB9MEU R2SBI -15
172815  -7  890  R2SBI DM2CNE JO73 (x3)
183515 -12  313  CQ R2SBI KO93 (x2)
183630  -3  805  R2SBI ON7AC JO11
183645  -9  313  CQ R2SBI KO93
183700  -2  805  R2SBI ON7AC JO11 (x4)
184900 -15 2608  R2SBI EA2ELH IN92 (x3)

160m

UTC    dB Audio  Message
194015  +0 1376  R2SBI IK6GPZ JN62 (x8)

20m

UTC    dB Audio  Message
044315  -1 1079  9A2TN R2SBI -07 (x3)
044515  -3 1080  CQ R2SBI KO93
044545  -2 1079  PD3LKN R2SBI -05 (x2)
044645  -3 1079  CQ R2SBI KO93
044715  -4 1080  PD0RCQ R2SBI +01 (x2)
044815 -17 1080  CQ R2SBI KO93 (x3)
044945 -18 1078  RA9FDR R2SBI -17
045000 -21 2192  R2SBI RA9FDR R-08
045015  +3 1079  RA9FDR R2SBI RR73

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.

CW

No CW receptions recorded for this callsign in the last 30 days.

Explore CW reception at SO8OO

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