RA3SO — FT8 activity observed at SO8OO

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

Receiver-side FT8 activity involving RA3SO, decoded by SO8OO in southeastern Poland. 1,337 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, across 39 UTC dates in the available aggregate history. Observed between 2026-06-08 and 2026-09-19.

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 1,337 FT8 messages attributed to RA3SO as the transmitting token by decoded message structure across 39 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (49%), followed by 40 m (42%) and 20 m (9%). Most decodes (75%) 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 -10.7 dB.

Overview

1,337

Messages attributed

UTC dates decoded

170

Active 15-min windows

-10.7 dB

Estimated median S/N

Bands

80m · 661 40m · 558 20m · 118

First attributed message: 2026-06-08
Last attributed message: 2026-09-19 18:12 UTC

Observed FT8 message patterns

Attributed sample: 1,337 messages
Active dates: 39 UTC dates
Estimated median S/N: -10.7 dB
Estimated 10th-90th percentile: -21 to 0 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 374, moderate (-15 to -9 dB) 406, strong (≥ -8 dB) 557.

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 RA3SO in decoded directed-looking exchanges:

R2SN · European Russia ×5 RG6OR · European Russia ×5 UB3LBU · European Russia ×5 RA6HA · European Russia ×4 US1EA · Ukraine ×4 RA1TR · European Russia ×4 R1TET · European Russia ×3 RA1OW · European Russia ×3 RA4CGX · European Russia ×3 UA3PTK · European Russia ×3 R2DGN · European Russia ×2 DG5PW · Fed. Rep. of Germany ×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 RA3SO

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 · 844 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,246 km (approx.)
Last such locator decoded: 2026-09-19 18:12 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	RA3SO S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-19 18:13	80m	- / -	DL3RL	+8 / -	2	Partial capture
09-19 18:10	80m	- / -	9A1KO	+4 / -	2	Partial capture
09-19 17:58	80m	-14 / -	R3RRC/P	- / -	2	Partial capture
09-19 17:56	80m	- / +5	RO3ZR	+3 / -	2	Partial capture
09-19 17:49	160m	- / -11	RN3RFZ	-3 / -	3	✓ Closing fragment
09-19 17:47	160m	- / -11	ES2AJ	+7 / -	3	✓ Closing fragment
09-19 17:47	160m	- / -11	R9UG	-22 / -	3	✓ Closing fragment
09-19 17:44	160m	- / -13	R2DGN	-1 / -	3	✓ Closing fragment
09-19 17:42	160m	- / -17	RW3RN	-2 / -	3	✓ Closing fragment
09-19 17:34	160m	- / -22	RA6ATZ	-16 / -	4	✓ Closing fragment
09-19 17:32	160m	- / -13	R4DD	-14 / -	2	✓ Closing fragment
09-19 17:31	160m	- / -6	RA3BY	0 / -	3	✓ Closing fragment
09-19 17:27	80m	-16 / -	RW4LMR	- / -12	2	✓ Closing fragment
09-19 17:22	80m	-10 / -8	R3ICU	-18 / -	3	✓ Closing observed
09-19 17:20	80m	-20 / -10	UA6EU	-6 / -3	4	✓ Full exchange observed
09-19 17:17	80m	- / -18	YO5IB	0 / -	4	✓ Closing fragment
09-19 17:13	80m	- / -22	RG6OR	-20 / -	3	✓ Closing fragment
09-19 17:10	80m	- / -	R4AGE	-10 / -	4	Partial capture
09-19 17:07	80m	-20 / -	UA3PKH	- / -	2	Partial capture
09-19 17:04	80m	-9 / -	R9FBL	- / -13	3	✓ Closing fragment
09-19 16:59	80m	- / -4	RA6HA	-12 / -	2	✓ Closing fragment
09-19 16:57	80m	-7 / 0	UA3QNA	+12 / -4	4	✓ Full exchange observed
09-19 16:51	80m	-8 / -3	R2DGN	-12 / -6	4	✓ Full exchange observed
09-19 16:50	80m	-4 / -	UA3PKH	- / -	9	Partial capture
09-19 16:49	80m	-3 / +8	EU1AFX	-2 / -5	5	✓ Full exchange observed
09-19 16:47	80m	-8 / +3	RV3YN	-10 / -4	5	✓ Full exchange observed
09-19 16:44	80m	-4 / -10	R3KJF	+2 / -	4	✓ Closing observed
09-19 16:43	80m	- / -4	R3PJ	-12 / -	2	✓ Closing fragment
09-19 06:00	40m	- / -2	UA3PTY	-18 / -	2	✓ Closing fragment
09-19 04:09	80m	-12 / -6	R2EA/P	-7 / -2	3	✓ Full exchange observed
09-17 19:38	80m	- / -10	UB3LBU	-10 / -	2	✓ Closing fragment
09-17 19:29	80m	+1 / +8	RA6OY	-1 / -	4	✓ Closing observed
09-17 19:26	160m	- / -9	RM5F	-13 / -	3	✓ Closing fragment
09-17 19:25	160m	- / -13	R2DRE	-20 / -	2	Partial capture
09-17 19:23	160m	- / -9	R2SN	-18 / -	3	✓ Closing fragment
09-17 19:00	80m	+4 / -	UA3PTK	-5 / +1	3	✓ Closing observed
09-17 18:58	80m	- / -	RC2DT	-3 / -	3	Partial capture
09-17 17:03	80m	-6 / -2	R2PT	+3 / -1	5	✓ Full exchange observed
09-17 16:56	80m	-5 / +6	Z35T	-6 / -16	5	✓ Full exchange observed
09-17 16:48	80m	- / -1	R3YAR	-4 / -	2	✓ Closing fragment
09-17 16:42	80m	+1 / -	R3PMI	- / -4	3	Partial capture
09-17 15:51	40m	-8 / -1	R6LI	-14 / -5	3	✓ Full exchange observed
09-14 04:19	40m	-16 / -4	IK1MJK/P	-9 / -	2	Partial capture
09-14 04:12	40m	- / -9	GM6URC	-16 / -	2	Partial capture
09-14 04:11	40m	-14 / -	RC8SAB	- / -13	2	✓ Closing fragment
09-13 18:00	80m	- / -2	UA4CKZ	-8 / -	3	✓ Closing fragment
09-13 17:54	80m	+5 / -	DL7UKM	+1 / -18	7	Partial capture
09-13 17:51	80m	- / -11	R4FDD	-12 / -	2	✓ Closing fragment
09-13 17:46	80m	-4 / -	RX3VF	- / -3	2	✓ Closing fragment
09-13 17:44	80m	-7 / 0	RA2FU	+3 / -13	6	✓ Full exchange observed

Recent FT8 messages decoded at SO8OO

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

80m

UTC    dB Audio  Message
175815 -15 1633  R3RRC/P RA3SO KO93 (x2)
180345  -1 1633  CQ RA3SO KO93
180530  -3 1001  RA3SO RW7B LN04
180745 -14 1634  CQ RA3SO KO93 (x2)
181030  +2 2744  RA3SO 9A1KO JN75
181045 -12 1635  CQ RA3SO KO93
181100  +6 2744  RA3SO 9A1KO JN75
181115  +1 1634  CQ RA3SO KO93 (x2)
181215  -1 1635  R2EA/P RA3SO KO93
181245  +2 1635  CQ RA3SO KO93
181300  +9 1999  RA3SO DL3RL JN59 (x2)

160m

UTC    dB Audio  Message
174230  -2 1626  RA3SO RW3RN R-17 (x2)
174400  +0  951  RA3SO R2DGN KO94 (x3)
174700 -24 2157  RA3SO R9UG NO25 (x2)
174730 -19 1768  RA3SO R9FAK LO87
174730 +11 2491  RA3SO ES2AJ -11
174800 -20 2157  RA3SO R9UG 73
174800  +6 2491  RA3SO ES2AJ -11 (x2)
174900  -1 2580  RA3SO RN3RFZ LO02 (x3)

40m

UTC    dB Audio  Message
042015 -10 1843  R1NI RA3SO RR73
042100  -9 1844  RA3SO IK1MJK/P -04
042315  -7 1842  UB3BDJ/6 RA3SO R-07
042530 -13 1844  RA3SO UB3BDJ/6 -03
063300 -12 1889  RA3SO RW3YS -10
064545 -19 1634  CQ RA3SO KO93 (x2)
155045  -8 1653  UA3PTK RA3SO KO93
155115  -2 1653  CQ RA3SO KO93
155130 -14 1653  RA3SO R6LI -01
155145  -5 1653  R6LI RA3SO R-05 (x2)
060030 -17 1669  RA3SO UA3PTY R-02 (x2)
060245 -13 1669  CQ RA3SO KO93

20m

UTC    dB Audio  Message
083415 +11  548  RA3SO I2SVA R-16
083415  -5 1746  RA3SO F4HSB JN37 (x3)
083945 -19 1682  RA3SO DH2YBG JO43 (x3)
094130 -18 1689  F5GPE RA3SO RR73
094745  +1 2359  RA3SO DL3KZA JO64
101200  +4 2946  RA3SO F4BYA JN19 (x5)
101530  -3  626  RA3SO DK8HC/P +03

10m

UTC    dB Audio  Message
081630 -21 1913  RA3SO DO1FZL 73
081330 -21 1909  RA3SO RA6AR 73

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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