RU3FW — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: European Russia

Receiver-side FT8 activity involving RU3FW, decoded by SO8OO in southeastern Poland. 91 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, 10m, across 24 UTC dates in the available aggregate history. Observed between 2026-06-08 and 2026-09-18.

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 91 FT8 messages attributed to RU3FW as the transmitting token by decoded message structure across 24 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (42%), followed by 20 m (38%) and 80 m (12%). Most decodes (64%) fell within the six-hour window 13:00-19:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -11 dB.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-11 dB

Estimated median S/N

Bands

80m · 11 40m · 38 20m · 35 10m · 7

First attributed message: 2026-06-08
Last attributed message: 2026-09-18 17:39 UTC

Observed FT8 message patterns

Attributed sample: 91 messages
Active dates: 24 UTC dates
Estimated median S/N: -11 dB
Estimated 10th-90th percentile: -21 to +2 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 28, moderate (-15 to -9 dB) 26, strong (≥ -8 dB) 37.

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 RU3FW in decoded directed-looking exchanges:

RX9WM · Asiatic Russia ×2 CR7BRV · Portugal DA100LENZ · Fed. Rep. of Germany R8CC · Asiatic Russia 5P5Z · Denmark BA3NZ · China BG0AYW · China CR5VP · Portugal CS8ABF · Azores DM2DXA · Fed. Rep. of Germany EW2ZC · Belarus EW4DX · Belarus

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.

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	RU3FW S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-18 17:41	80m	- / -5	UA3QNA	+8 / -	2	✓ Closing fragment
09-18 17:35	80m	- / -11	R3KJF	-7 / -	2	✓ Closing fragment
09-06 17:54	80m	-24 / -9	YO4NT	+10 / -2	3	✓ Full exchange observed
09-06 17:53	80m	- / -5	OZ7CL	-9 / -	2	✓ Closing fragment
09-06 17:50	80m	-24 / -10	SP9GCZ	+6 / -17	3	✓ Full exchange observed
09-06 17:46	80m	-16 / -11	RW9WJ	-10 / -4	4	✓ Full exchange observed
09-04 18:06	40m	0 / -	JA5NSR	- / -22	2	✓ Closing fragment
09-04 18:02	40m	-2 / -	AM42SDC	- / -16	2	Partial capture
09-04 17:58	40m	-12 / -	8S2A	- / -18	2	✓ Closing fragment
09-01 17:25	40m	- / -	RV3YN	+3 / -	3	Partial capture
08-31 15:49	40m	-21 / -	RX9WM	- / -	3	✓ Closing fragment
08-31 15:44	40m	- / -	R3KJF	-4 / -	2	Partial capture
08-31 15:42	40m	-15 / -4	R9SAP	-14 / -	3	✓ Closing observed
08-28 18:07	80m	- / -12	R9FDI	-16 / -	2	✓ Closing fragment
08-28 18:06	80m	-8 / -16	UN8DSW	-12 / -19	2	Partial capture
08-28 09:08	20m	+5 / -	IS0LBE	- / -11	2	Partial capture
08-28 09:04	20m	-6 / -	RZ9A	- / -7	2	✓ Closing fragment
08-28 09:02	20m	-2 / -	UA6AOP	+1 / -12	4	✓ Closing observed
08-27 18:07	80m	+3 / -	UA4FKT	- / -5	2	✓ Closing fragment
08-27 18:04	80m	- / -1	RC6OZ	-12 / -	2	Partial capture
08-27 18:03	80m	-4 / -16	RX6AOB	-2 / -	3	✓ Closing observed
08-27 17:50	80m	-2 / -	OH2BVT	- / -12	2	Partial capture
08-22 18:18	20m	-21 / -12	DM2DXA	-7 / -	4	✓ Closing observed
08-22 18:14	40m	- / -	US1EA	-13 / -	2	Partial capture
08-22 18:09	40m	-2 / -	ZS6WAB	- / -12	2	Partial capture
08-21 18:11	40m	-9 / -	R3ICU	-9 / -	2	✓ Closing observed
08-21 18:10	40m	- / -	R2ASY	-9 / -	5	Partial capture
08-21 17:45	20m	- / -	RD0L	-1 / -	2	✓ Closing fragment
08-20 17:51	20m	- / -4	XU7O	-2 / -	2	✓ Closing fragment
08-20 17:47	20m	-16 / -8	CS8ABF	-1 / -	3	✓ Closing observed
08-16 17:51	40m	-14 / -	R4PFY	- / -3	2	✓ Closing fragment
08-16 17:49	40m	- / -14	R7DX	-8 / -	6	✓ Closing fragment
08-16 17:48	40m	-14 / -	R0AH	- / -6	2	✓ Closing fragment
08-16 17:48	40m	-7 / +3	RA3RDN	-9 / -	6	✓ Closing observed
08-16 17:47	40m	-20 / -9	R2DYC	-14 / -1	4	✓ Full exchange observed
08-16 17:46	40m	-8 / -	7Z1BQ	- / -19	2	Partial capture
08-16 17:44	40m	-12 / -	RA5BQ	-20 / -6	3	✓ Closing observed
08-12 17:36	20m	-14 / -5	CR5VP	-15 / -	5	✓ Closing observed
07-12 17:52	20m	-20 / -11	EW2ZC	-7 / -	5	✓ Closing observed
07-09 09:54	10m	- / -5	IK4LZH	+8 / -	4	Partial capture
07-09 09:49	10m	- / -10	IK4LZH	+4 / -	4	Partial capture
07-06 08:54	20m	- / -	YO3GNF	-8 / -	2	Partial capture
07-06 08:52	20m	- / +2	EW4DX	-6 / -	2	✓ Closing fragment
07-04 18:01	40m	-14 / -8	TM2WWA	-11 / -22	3	Partial capture
07-03 17:48	20m	- / -12	IK1RQX	-5 / -	3	✓ Closing fragment
07-03 17:43	20m	- / -4	TM8WWA	+6 / -	2	✓ Closing fragment
07-02 11:18	20m	- / -	DJ7WG	-13 / -	3	Partial capture
07-02 11:17	20m	- / 0	PE9JAN	-16 / -	5	✓ Closing fragment
07-02 09:49	20m	-1 / -	SC9WWA	- / -4	2	✓ Closing fragment
06-26 09:22	10m	-16 / -	R8CC	- / -15	2	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

80m

UTC    dB Audio  Message
174815  -9  852  RU3FW RM5F R-06
175030 -24 1567  SP9GCZ RU3FW -17
175045  +3 1567  RU3FW SP9GCZ R-10 (x2)
175300 -10 1425  RU3FW OZ7CL R-05 (x2)
175415 -24 1842  YO4NT RU3FW -02
175430 +10 1842  RU3FW YO4NT R-09 (x2)
173500 -12  996  RU3FW R3KJF R-11 (x2)
173945 -24  567  UB3ADO/P RU3FW RR73
174145  +8  788  RU3FW UA3QNA -05 (x2)
174415  -7 1108  RU3FW R4FV 73

40m

UTC    dB Audio  Message
154945 -20 1804  RX9WM RU3FW RR73 (x3)
170545  +3 1010  II7MGXX RU3FW -15
170730  -9 2327  UB0AMB RU3FW RR73
172500  +0 2252  RU3FW RV3YN KO73 (x3)
175815 -12 1344  8S2A RU3FW -18 (x2)
180245  -3  376  AM42SDC RU3FW -16 (x2)
180430  +5  580  RU3FW OZ/KD0NDU R-18
180645  -1  548  JA5NSR RU3FW -22 (x2)

20m

UTC    dB Audio  Message
181800  -6 1233  RU3FW DM2DXA R-12 (x2)
181845 -21 1234  DM2DXA RU3FW RR73
181900  -6 1234  RU3FW DM2DXA 73
075245 +12  525  RI1FJL RU3FW -04
075430  +1  467  RU3FW RR73; RZ3BP <...> -02
090030  -6 1870  ON3CH RU3FW -14
090230  +2 1215  UA6AOP RU3FW -12 (x3)
090345  +1 1215  RU3FW UA6AOP 73
090445  -3 1381  RZ9A RU3FW -07 (x2)
090800  +5 1822  IS0LBE RU3FW -11 (x2)

10m

UTC    dB Audio  Message
091945  -2 2352  <RU3FW> DA100LENZ 73
092200  +3  640  RU3FW R6ZEJ KN98
092215 -16 2217  R8CC RU3FW R-15
092230 -16  240  RU3FW R6LKG LN07
092245 -15 2218  R8CC RU3FW 73
092245  -6 1303  RU3FW OM1US JN88
092615  -3  639  CR7BRV RU3FW RR73
094945  -2  491  RU3FW IK4LZH R-10 (x8)

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