R3XBB — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: European Russia Most frequent locator attributed to this token: KO84

Receiver-side FT8 activity involving R3XBB, decoded by SO8OO in southeastern Poland. 872 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, 10m, across 43 UTC dates in the available aggregate history. Observed between 2026-06-09 and 2026-09-12.

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 872 FT8 messages attributed to R3XBB as the transmitting token by decoded message structure across 43 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (65%), followed by 20 m (13%) and 80 m (12%). Most decodes (77%) fell within the six-hour window 15:00-21:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -10 dB.

Overview

872

Messages attributed

UTC dates decoded

134

Active 15-min windows

-10 dB

Estimated median S/N

Bands

80m · 101 40m · 568 20m · 109 10m · 94

First attributed message: 2026-06-09
Last attributed message: 2026-09-12 19:07 UTC

Observed FT8 message patterns

Attributed sample: 872 messages
Active dates: 43 UTC dates
Estimated median S/N: -10 dB
Estimated 10th-90th percentile: -19 to +1.8 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 218, moderate (-15 to -9 dB) 311, strong (≥ -8 dB) 343.

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 R3XBB in decoded directed-looking exchanges:

IK4LZH · Italy ×4 F1IQH · France ×3 R4HEA · European Russia ×2 MW7RHR · Wales ×2 R2GFD · European Russia ×2 HA3GX · Hungary ×2 M9PCA · England ×2 R1WCK · European Russia ×2 RA4Y · European Russia ×2 RC6OD · European Russia ×2 UA4FKT · European Russia ×2 9A2TN · Croatia

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 R3XBB

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: KO84 · 360 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,150 km (approx.)
Last such locator decoded: 2026-09-12 18:44 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	R3XBB S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-12 19:06	80m	-16 / -	R3ZBH	-5 / -9	3	✓ Closing observed
09-12 18:55	80m	- / -25	IK6GPZ	-1 / -	7	✓ Closing fragment
09-12 18:36	40m	-3 / -	G4KRF	-10 / -	3	✓ Closing observed
09-06 18:44	40m	-2 / -7	R1CF	-8 / -2	4	✓ Full exchange observed
09-06 18:38	40m	-3 / -	PD8HUB	- / -	2	Partial capture
09-03 17:46	40m	-13 / -	RI1FJL	- / -23	3	Partial capture
09-01 18:58	40m	- / -12	ON4ASV	+8 / -	4	✓ Closing fragment
09-01 18:41	40m	0 / -12	R4FV	+2 / +2	4	✓ Full exchange observed
09-01 18:36	40m	-6 / -	R9MDA	- / -15	4	✓ Closing fragment
08-31 19:28	40m	-22 / -10	SQ9SET	-5 / -	3	Partial capture
08-31 19:23	40m	-9 / -8	YL2KF	-15 / -	3	✓ Closing observed
08-31 18:56	40m	-9 / -	JA4FKX	- / -	2	Partial capture
08-31 18:40	20m	- / -5	M7JVT	-4 / -	3	✓ Closing fragment
08-27 19:01	20m	- / +4	ON1JP	0 / -	3	Partial capture
08-27 18:59	20m	- / -14	F1IQH	-5 / -	3	✓ Closing fragment
08-27 18:57	40m	- / -	UB3LBU	0 / -	3	Partial capture
08-27 18:54	80m	- / +3	R3DMS	-4 / -	3	✓ Closing fragment
08-27 18:50	80m	- / -14	R2EA/P	-1 / -	2	✓ Closing fragment
08-27 06:13	20m	-3 / -	RI1FJL	- / -23	3	✓ Closing fragment
08-26 20:18	20m	- / -	F1IQH	-10 / -	2	Partial capture
08-26 20:13	80m	+1 / -7	HA7TM	-6 / -19	5	✓ Full exchange observed
08-26 19:36	40m	-9 / -5	EI9KF	-16 / -20	7	✓ Full exchange observed
08-26 19:35	40m	-8 / -7	RM0F	-19 / -10	3	✓ Full exchange observed
08-26 19:32	40m	-5 / -	HA5UA	- / -8	3	✓ Closing fragment
08-26 19:28	40m	-7 / -1	DH9ET	-6 / -20	5	✓ Full exchange observed
08-26 19:25	40m	-6 / -	SP1BMK	-6 / -15	4	✓ Closing observed
08-26 19:24	40m	-6 / -	TA6MMI	- / -	2	Partial capture
08-25 19:41	40m	-6 / -11	S59A	+7 / -	4	✓ Closing observed
08-25 19:30	40m	-6 / -	M7KSV	- / -18	2	✓ Closing fragment
08-25 19:28	40m	-5 / +3	M9PCA	-3 / -11	6	✓ Full exchange observed
08-25 19:16	40m	-7 / -	G6MTI	- / -16	3	Partial capture
08-25 19:13	40m	-9 / -3	YT7DX	+2 / -	7	✓ Closing observed
08-25 19:11	40m	- / -	DK8HC	-6 / -	3	Partial capture
08-25 19:09	40m	0 / -6	UC1Q	-7 / -3	3	✓ Full exchange observed
08-25 17:06	40m	-10 / -	RA9CUU	- / -14	3	✓ Closing fragment
08-25 17:03	40m	-2 / -	R9FAK	- / -6	2	✓ Closing fragment
08-25 17:02	40m	0 / -5	R2HB	-8 / -6	5	✓ Full exchange observed
08-25 17:01	40m	-9 / +2	R3WDW	+5 / -12	5	✓ Full exchange observed
08-25 16:49	40m	-9 / -8	PA1PXL	-10 / -19	4	✓ Full exchange observed
08-25 05:49	20m	- / -15	UA6EU	-6 / -	2	✓ Closing fragment
08-25 05:46	20m	- / -9	PA2RIC	-11 / -	2	Partial capture
08-25 05:41	20m	-6 / -	DL1R	- / -12	3	Partial capture
08-23 16:08	40m	-4 / -4	RV2H	-10 / -6	5	✓ Full exchange observed
08-23 16:05	40m	-2 / -	UB6ZDJ	- / -7	2	✓ Closing fragment
08-23 16:04	40m	-11 / -	UC6D	+2 / -	2	✓ Closing observed
08-23 16:02	40m	-6 / -	HA1DSL	- / -17	2	✓ Closing fragment
08-23 15:58	40m	-8 / -	RL1I/P	- / -15	3	✓ Closing fragment
08-23 15:56	40m	-10 / -5	RA3SO	-6 / -	3	Partial capture
08-23 15:45	40m	-10 / -	DA3W	-19 / -14	4	Partial capture
08-23 15:43	40m	-6 / -	EW1TA/P	- / -18	3	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

80m

UTC    dB Audio  Message
192330  -3 1477  CQ R3XBB KO84
192415  -9 1805  R3XBB LZ2SJ KN33
192700  -7 1477  LZ2SJ R3XBB -14
195530 -15  822  R3XBB EW8CW RR73
185530  -1 1592  R3XBB IK6GPZ JN62 (x7)
190630 -17 1477  R3ZBH R3XBB -09 (x2)
190745  -5 2676  R3XBB R3ZBH 73
191115  -5 1525  R3XBB RV6AVU RR73

40m

UTC    dB Audio  Message
174615  -7 1507  RI1FJL R3XBB R-23 (x3)
183800  -2 1507  PD8HUB R3XBB KO84 (x2)
184415  -9 2225  R3XBB R1CF -07
184430  -3 1508  R1CF R3XBB R-02
184445  -6 2225  R3XBB R1CF RR73
184500  -2 1508  R1CF R3XBB 73
184530  -8 1507  CQ R3XBB KO84
183600 -10 1507  R3XBB G4KRF IO83
183645  -3 1508  G4KRF R3XBB RR73
183700 -10 1507  R3XBB G4KRF 73
183930 -12 2335  R3XBB R6HV/P KN93
184430  +1 1508  RA0AB R3XBB KO84

20m

UTC    dB Audio  Message
202245  -6 2808  R3XBB F6BHK JN24
061345  -5 1309  RI1FJL R3XBB KO84 (x3)
061515  -2 1308  CQ R3XBB KO84 (x2)
185930  -4 1307  R3XBB F1IQH JN27 (x3)
190100  +2 1619  R3XBB ON1JP +04 (x3)
184015  -3 1297  R3XBB M7JVT IO94 (x3)

10m

UTC    dB Audio  Message
101730  -7 1476  R3XBB DO1KS R+01 (x2)
093615 +11  490  R3XBB IK4LZH JN54 (x4)
100015 -20 1301  R3XBB RV6HE RR73
103600 -14 1545  R3XBB CT3IQ -05 (x3)
150700 -18 1303  EA7KZ R3XBB R+01 (x2)
150800 -19 1303  CQ R3XBB KO84
150930 -17 1303  DN9RM R3XBB -17
151300 -19 1303  UN9LBC R3XBB -18

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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