R3UBB — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: European Russia Most frequent locator attributed to this token: LO07

Receiver-side FT8 activity involving R3UBB, decoded by SO8OO in southeastern Poland. 35 FT8 messages attributed to this token as transmitter, on 80m, across 1 UTC dates in the available aggregate history. Last observed 2026-09-13.

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 35 FT8 messages attributed to R3UBB as the transmitting token by decoded message structure across 1 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (100%). In this small sample, the estimated median decoder S/N was -9 dB; no usual signal pattern is inferred.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-9 dB

Estimated median S/N

Bands

80m · 35

First attributed message: 2026-09-13
Last attributed message: 2026-09-13 19:00 UTC

Observed FT8 message patterns

Attributed sample: 35 messages
Active dates: 1 UTC dates
Estimated median S/N: -9 dB
Estimated 10th-90th percentile: -14 to -3 dB
Recurring-pattern threshold: Not met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 1, moderate (-15 to -9 dB) 19, strong (≥ -8 dB) 15.

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. The sample does not meet the threshold for a recurring time or signal-pattern claim (20 attributed messages, three UTC dates and five distinct 15-minute windows).

Frequent counterpart tokens observed at SO8OO

Tokens most often paired with R3UBB in decoded directed-looking exchanges:

R4FFQ · European Russia ×2 R3ICU · European Russia R3PLN · European Russia R4RN · European Russia R9DZ · Asiatic Russia RA3GZ · European Russia RA3PGR · European Russia RA3V · European Russia RA3ZOM · European Russia RM5P · European Russia RT2P · European Russia RT9YO · Asiatic Russia

Most frequent locator attributed to R3UBB

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: LO07 · 5 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,510 km (approx.)
Last such locator decoded: 2026-09-13 18:39 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	R3UBB S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-13 19:00	80m	-16 / +2	RM5P	0 / -4	4	✓ Full exchange observed
09-13 18:57	80m	-7 / +7	RU3T	0 / +1	4	✓ Full exchange observed
09-13 18:55	80m	- / +6	R3PLN	+6 / -	2	✓ Closing fragment
09-13 18:45	80m	- / -4	UA4FKT	+4 / -	3	✓ Closing fragment
09-13 18:41	80m	- / -	RA6ATZ	+4 / -	2	Partial capture
09-13 18:39	80m	-8 / -2	RA3PGR	-5 / -5	4	✓ Full exchange observed
09-13 18:27	80m	-12 / -	UA3PKH	- / -	2	Partial capture
09-13 18:20	80m	- / -2	RA3GZ	+9 / -	2	✓ Closing fragment
09-13 18:12	80m	-8 / -13	RA3ZOM	+10 / -16	4	✓ Full exchange observed
09-13 17:19	80m	- / -	9A4ZM	+10 / -	2	Partial capture
09-13 17:19	80m	-9 / -	R1TET	-12 / -11	4	Partial capture
09-13 17:17	80m	-8 / +2	R4RN	-12 / -7	8	✓ Full exchange observed
09-13 17:15	80m	-5 / -	RA1QCX	-15 / -2	4	Partial capture
09-13 17:15	80m	- / -10	RA3V	-12 / -	2	✓ Closing fragment
09-13 17:15	80m	-12 / -2	UB4FGK	-11 / -9	7	✓ Full exchange observed
09-13 17:12	80m	-8 / -	RW2Z	+3 / -12	3	✓ Closing observed
09-13 17:12	80m	-12 / -12	R9DZ	-15 / -8	5	✓ Full exchange observed
09-13 17:11	80m	-5 / +1	RT2P	-8 / -6	6	✓ Full exchange observed
09-13 17:10	80m	-2 / 0	RU3FM	+2 / -4	5	✓ Full exchange observed
09-13 17:09	80m	-9 / -	R4FFQ	+1 / -2	4	✓ Closing observed
09-13 16:23	80m	-8 / -	RT9YO	- / -16	2	✓ Closing fragment
09-13 16:20	80m	-11 / -	R3ICU	- / -20	3	✓ Closing fragment
09-13 16:20	40m	- / -7	R7LB	-4 / -	2	Partial capture

Recent FT8 messages decoded at SO8OO

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

80m

UTC    dB Audio  Message
184145  +5 2081  R3UBB RA6ATZ KN96 (x2)
184515  +3 1115  R3UBB UA4FKT LO23 (x3)
185545  +8 1205  R3UBB R3PLN +06 (x2)
185700  -9  749  RU3T R3UBB +01
185715  -1  748  R3UBB RU3T R+07
185730  -5  749  RU3T R3UBB RR73
185745  +0  748  R3UBB RU3T 73
190000  -1 2202  R3UBB RM5P +02 (x2)
190045 -16 2202  RM5P R3UBB R-04
190100  -3 2202  R3UBB RM5P RR73

40m

UTC    dB Audio  Message
162015  -4 2194  R3UBB R7LB -07 (x2)
180445 -10 2341  R3UBB EU6UE -12

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