RA1WU — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: European Russia Most frequent locator attributed to this token: KO47

Receiver-side FT8 activity involving RA1WU, decoded by SO8OO in southeastern Poland. 480 FT8 messages attributed to this token as transmitter, on 160m, 80m, 40m, 20m, across 20 UTC dates in the available aggregate history. Observed between 2026-06-17 and 2026-09-20.

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 480 FT8 messages attributed to RA1WU as the transmitting token by decoded message structure across 20 UTC dates in the available aggregate history. The largest monitored-band total was 160 m (43%), followed by 80 m (34%) and 20 m (17%). Most decodes (91%) fell within the six-hour window 16:00-22:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (85%); the estimated median was +1 dB.

Overview

480

Messages attributed

UTC dates decoded

Active 15-min windows

+1 dB

Estimated median S/N

Bands

160m · 207 80m · 161 40m · 30 20m · 82

First attributed message: 2026-06-17
Last attributed message: 2026-09-20 19:06 UTC

Observed FT8 message patterns

Attributed sample: 480 messages
Active dates: 20 UTC dates
Estimated median S/N: +1 dB
Estimated 10th-90th percentile: -10 to +10 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 16, moderate (-15 to -9 dB) 55, strong (≥ -8 dB) 409.

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 RA1WU in decoded directed-looking exchanges:

RA3TVW · European Russia ×2 RC6OU · European Russia ×2 DK3GI · Fed. Rep. of Germany DL6EL · Fed. Rep. of Germany DL7UKM · Fed. Rep. of Germany G6CUT · England IU3RRX · Italy JA7EVP · Japan JF8QNF · Japan OM1AN · Slovak Republic R1MA · European Russia R2DGN · European Russia

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 RA1WU

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: KO47 · 291 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 964 km (approx.)
Last such locator decoded: 2026-09-20 19:05 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	RA1WU S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-20 19:03	160m	+6 / -	RI1FJZ	- / -8	7	Partial capture
09-20 18:33	80m	+7 / -	RI1FJZ	- / -	4	Partial capture
09-20 18:32	80m	+10 / -	IU3WIX	- / -18	2	✓ Closing fragment
09-20 18:31	80m	+6 / -1	DO7DE	+3 / -3	5	✓ Full exchange observed
09-20 18:29	80m	+11 / -6	RC6OU	+21 / +1	5	✓ Full exchange observed
09-20 18:28	80m	+12 / -	R9FBL	- / -15	2	✓ Closing fragment
09-20 18:26	80m	+10 / -	RA4NCC	- / -12	2	✓ Closing fragment
09-20 18:19	80m	+14 / 0	UA2FBW	+8 / -4	5	✓ Full exchange observed
09-20 18:15	80m	+14 / -15	UB6OAJ	+2 / -5	3	Partial capture
09-20 18:14	80m	+13 / -	RI1FJZ	- / -23	15	Partial capture
09-20 18:12	80m	+10 / +2	RC1BQ	+2 / 0	6	✓ Full exchange observed
09-20 18:09	80m	+9 / -	RI1FJZ	- / -	4	Partial capture
09-20 17:55	80m	-11 / -	RI1FJZ	- / -	11	Partial capture
09-20 17:40	80m	+4 / -	RI1FJZ	- / -	22	Partial capture
09-20 17:32	80m	- / -	DO7DE	0 / -	2	Partial capture
09-20 17:26	80m	+6 / -	RI1FJZ	- / -	19	Partial capture
09-20 16:52	80m	+5 / -	RI1FJZ	- / -7	10	Partial capture
09-19 18:20	160m	+4 / -	EU7A	- / -	2	Partial capture
09-19 18:14	160m	+8 / -22	RZ3O	-10 / -8	3	✓ Full exchange observed
09-19 18:08	80m	-2 / -	R3RRC/P	- / -6	2	Partial capture
09-19 18:08	80m	- / -12	R3AQ	-3 / -	5	✓ Closing fragment
09-02 18:34	160m	-4 / -	S59A	-7 / -5	2	Partial capture
09-02 18:32	160m	+4 / +6	UA3AKO	+4 / +4	6	✓ Full exchange observed
09-02 18:23	160m	0 / -	R9CS/P	- / 0	8	✓ Closing fragment
08-31 23:33	160m	+11 / -	RI1FJL	- / -	2	Partial capture
08-31 20:34	160m	-4 / -	R1MA	-9 / +4	3	✓ Closing observed
08-31 20:01	160m	-18 / -	RW9QA	- / -	2	Partial capture
08-29 20:42	160m	+2 / -	UB3BAE/P	- / -13	2	✓ Closing fragment
08-29 20:40	160m	+4 / +4	DK3GI	+13 / -6	5	✓ Full exchange observed
08-29 20:34	160m	+2 / -	<...>	- / -26	2	Partial capture
08-29 20:29	160m	+8 / -	<...>	- / -	4	Partial capture
08-29 20:26	160m	+4 / -	HB040A	- / -	4	Partial capture
08-29 20:23	160m	+2 / -	DL7UKM	- / -15	2	✓ Closing fragment
08-29 20:18	160m	+4 / 0	G6CUT	-3 / -	4	✓ Closing observed
08-29 20:18	160m	- / -	SP2GJI	-13 / -	2	Partial capture
08-29 20:12	160m	-12 / -11	RL3FA	+1 / -5	5	✓ Full exchange observed
08-29 20:04	160m	+11 / -20	SP9SOS	0 / -16	6	✓ Full exchange observed
08-29 20:01	160m	+1 / -1	RU3NCW	-11 / -6	3	✓ Full exchange observed
08-29 19:48	160m	+10 / -3	R2DGN	-1 / -7	5	✓ Full exchange observed
08-29 18:34	160m	-10 / -	RA3VMK/P	- / -	2	Partial capture
08-27 19:48	80m	- / -9	R6ZEJ	+2 / -	4	✓ Closing fragment
08-27 19:46	80m	- / -9	R2EA/P	+5 / -	2	✓ Closing fragment
08-27 19:35	80m	-8 / -	RI1FJL	- / -	6	Partial capture
08-27 18:30	160m	+6 / -14	RU6C	-5 / -3	5	✓ Full exchange observed
08-27 18:28	160m	+4 / +1	RK3QA	-6 / +4	4	✓ Full exchange observed
08-21 05:54	20m	- / -	UA3RRT	-15 / -	2	Partial capture
08-21 05:50	20m	-6 / -24	R6FX	+12 / -11	6	✓ Full exchange observed
08-21 05:49	20m	-2 / -	R9CA	- / -17	2	✓ Closing fragment
08-21 05:47	20m	-3 / -	TA2EE	- / -7	2	✓ Closing fragment
08-19 20:01	160m	+4 / -20	IU3RRX	-9 / -16	5	✓ Full exchange observed

Recent FT8 messages decoded at SO8OO

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

160m

UTC    dB Audio  Message
181400  +9 2846  RZ3O RA1WU -08
181415 -10  296  RA1WU RZ3O R-22
181430  +8 2846  RZ3O RA1WU RR73
181530  +5 2846  CQ RA1WU KO47 (x2)
182015  +6 2846  EU7A RA1WU KO47 (x2)
164245 -19 2527  RI1FJZ RA1WU KO47 (x8)

80m

UTC    dB Audio  Message
183000 +23 2735  RA1WU RC6OU 73
183015 +11 2803  CQ RA1WU KO47 (x3)
183130  +6 2027  RA1WU DO7DE JN49
183145  +5 2803  DO7DE RA1WU -03
183200  +2 2026  RA1WU DO7DE R-01
183215  +6 2803  DO7DE RA1WU RR73
183230  +1 2026  RA1WU DO7DE 73
183245  +8 2803  IU3WIX RA1WU R-18 (x2)
183345  +8 2803  RI1FJZ RA1WU KO47 (x4)

20m

UTC    dB Audio  Message
161830  -6 2944  RA1WU R9TS RR73
161930 -19 1159  RA1WU RW6B KN93
054615 -16 2106  RA1WU 9Y4DG -06
054730  -4 2696  TA2EE RA1WU -07 (x2)
054945  -2 2696  R9CA RA1WU R-17 (x2)
055030 +10 2703  RA1WU R6FX LN14 (x2)
055115  -5 2696  R6FX RA1WU -11
055130 +12 2703  RA1WU R6FX R-24
055145  -7 2703  R6FX RA1WU RR73
055200 +14 2703  RA1WU R6FX R-24
055400 -10 1730  RA1WU UA3RRT LO03 (x2)

60m

UTC    dB Audio  Message
190315  -8 1608  RA1WU DK2NG JO52 (x3)

40m

UTC    dB Audio  Message
195030  -4 2908  R5AV RA1WU 73
195100  -6 2908  CQ RA1WU KO47                         a1
195145  -4 2908  RA1WU G6LEE RR73
195845  -4 2129  RA1WU UA4FOH R+02
195900  -2 2909  UA4FOH RA1WU RR73
195915  -7 2129  RA1WU UA4FOH 73
195930  -5 2908  CQ RA1WU KO47 (x2)
200500  -1 2931  R9SY RA1WU -08 (x2)
200600  -1 2931  CQ RA1WU KO47 (x3)
200800  -1 2931  DF9HT/P RA1WU KO47
200915  -2 2931  MM0HVU RA1WU KO47

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.

FT8DB and SO8OO WebSDR are a hobby project maintained solo. ☕ Buy me a coffee