RV3SBS — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: European Russia Most frequent locator attributed to this token: KO94

Receiver-side FT8 activity involving RV3SBS, decoded by SO8OO in southeastern Poland. 135 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, across 9 UTC dates in the available aggregate history. Observed between 2026-06-28 and 2026-09-21.

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 135 FT8 messages attributed to RV3SBS as the transmitting token by decoded message structure across 9 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (88%), followed by 40 m (11%) and 20 m (1%). Most decodes (77%) fell within the six-hour window 19:00-01:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -11 dB.

Overview

135

Messages attributed

UTC dates decoded

Active 15-min windows

-11 dB

Estimated median S/N

Bands

80m · 119 40m · 15 20m · 1

First attributed message: 2026-06-28
Last attributed message: 2026-09-21 16:14 UTC

Observed FT8 message patterns

Attributed sample: 135 messages
Active dates: 9 UTC dates
Estimated median S/N: -11 dB
Estimated 10th-90th percentile: -20 to -3 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 42, moderate (-15 to -9 dB) 51, strong (≥ -8 dB) 42.

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 RV3SBS in decoded directed-looking exchanges:

RM5F · European Russia ×2 R3RRC/P · European Russia ×2 RA3X · European Russia ×2 OH3OJ · Finland R6KEE · European Russia RC9F · European Russia RL1B · European Russia UA6BGM · European Russia YO6LM · Romania RA3QTT · European Russia RD4F · European Russia RI1FJZ · Franz Josef Land

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 RV3SBS

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: KO94 · 80 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,273 km (approx.)
Last such locator decoded: 2026-09-21 16:13 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	RV3SBS S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-21 16:15	80m	- / -9	RM3ZK	+9 / -	2	Partial capture
09-21 16:14	80m	-10 / -	UA3ROJ	- / +5	2	✓ Closing fragment
09-21 00:10	160m	- / -	R6OD	+17 / -	2	Partial capture
09-21 00:10	160m	- / -	RA3RDN	-2 / -	2	Partial capture
09-21 00:08	160m	- / -12	RZ6BS	+7 / -	4	✓ Closing fragment
09-21 00:07	160m	- / -	UA6JQ	-20 / -	2	Partial capture
09-21 00:00	80m	-4 / -	HF100PKP	- / -	3	Partial capture
09-20 23:58	80m	-11 / -23	M1AQR	-10 / -23	6	✓ Full exchange observed
09-20 23:52	160m	- / -2	UG4L	-4 / -	3	✓ Closing fragment
09-20 23:42	160m	- / -17	RI1FJZ	-14 / -	2	✓ Closing fragment
09-20 17:35	160m	- / -20	EW8W	+12 / -	2	Partial capture
09-20 17:18	80m	-11 / -	RX3DRC	- / -8	2	Partial capture
09-20 17:14	80m	-16 / -6	R2DP	0 / -5	5	✓ Full exchange observed
09-20 17:11	80m	-10 / -	R9WEI	- / -	3	Partial capture
09-20 17:00	40m	- / -19	RD5Q	-6 / -	2	✓ Closing fragment
09-20 16:58	80m	-17 / -12	RV3DLV	+6 / -8	4	✓ Full exchange observed
09-20 14:32	40m	- / -10	RG5A	+6 / -	3	✓ Closing fragment
09-20 04:51	40m	- / -2	RU4SO	-6 / -	2	✓ Closing fragment
09-20 00:47	80m	- / -24	R7KKO	-10 / -	2	Partial capture
09-20 00:43	80m	- / -	R4FDK	-4 / -	5	Partial capture
09-20 00:40	80m	+2 / 0	RW1AI	+2 / -8	5	✓ Full exchange observed
09-20 00:39	80m	-1 / -2	R4FDD	+8 / -1	4	✓ Full exchange observed
09-20 00:17	40m	- / -	TA3NK	+4 / -	2	Partial capture
09-20 00:06	40m	-10 / -16	R6GY	+2 / -	3	✓ Closing observed
09-20 00:01	80m	-3 / -	R9CA	- / -25	3	✓ Closing fragment
09-19 15:47	40m	- / +1	R4HNT	-2 / -	2	✓ Closing fragment
09-19 15:37	40m	- / -19	RJ3T	-4 / -	2	✓ Closing fragment
09-19 15:35	40m	- / +4	RX3RZ	+4 / -	2	✓ Closing fragment
09-19 15:31	40m	-11 / -11	RN3TT	-6 / +4	3	✓ Full exchange observed
09-19 15:28	40m	- / -17	RT2P	-9 / -	2	✓ Closing fragment
09-19 02:56	80m	-10 / -	SN40KZE	- / -2	3	Partial capture
09-18 23:33	80m	- / -14	RN2F	+2 / -	2	✓ Closing fragment
09-18 23:28	80m	-6 / -4	R5BM	-8 / +7	5	✓ Full exchange observed
09-18 23:26	80m	-6 / -	SO100PKP	- / -1	3	Partial capture
09-18 22:26	80m	-21 / -23	OK1UOZ	+15 / -18	5	✓ Full exchange observed
09-18 22:23	80m	-18 / -	SO100PKP	- / -	2	Partial capture
09-18 22:09	80m	- / -5	RY3F	-8 / -	2	✓ Closing fragment
09-18 22:08	80m	- / -13	R5EY	0 / -	2	✓ Closing fragment
09-18 22:06	80m	- / -23	RN3YN	-12 / -	2	✓ Closing fragment
09-18 22:02	80m	-15 / -5	R2EA/P	0 / -1	6	✓ Full exchange observed
09-18 21:57	80m	-12 / -	R2EA/P	- / -	2	Partial capture
09-18 21:53	80m	- / -	DO1ZTR	-14 / -	4	Partial capture
09-18 21:52	80m	-6 / -3	R5VDJ	-14 / +8	4	✓ Full exchange observed
09-18 21:51	80m	- / -	OK1UOZ	+11 / -	9	Partial capture
09-18 21:50	80m	-5 / -3	RK9UE	-7 / -	4	✓ Closing observed
09-18 21:38	80m	-14 / -	RN3YN	- / -	2	Partial capture
09-18 16:22	80m	- / -12	R3RR	-8 / -	2	✓ Closing fragment
09-17 22:05	80m	-9 / -	LA4NM	- / -	4	Partial capture
09-17 22:02	80m	-8 / -4	OH2FQV	+2 / -5	4	✓ Full exchange observed
09-17 21:57	80m	- / -12	R6ZBQ	0 / -	2	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
001130  -9  426  PD2ET RV3SBS KO94
001715 +10  615  RV3SBS TA3NK KM39 (x2)
045100  -6 1689  RV3SBS RU4SO -02 (x2)
045330  +0  384  RV3SBS RA6Z RR73
114200 -19 1080  RV3SBS RV3IN RR73
143200  +4  482  RV3SBS RG5A KN93 (x3)
170030  -7 1169  RV3SBS RD5Q -19 (x2)
170200 +15  616  RV3SBS RN6AK KN95
092130 -13 2496  RV3SBS RL6MT -01
161715  -9 1172  RV3SBS UA0ACZ -16

80m

UTC    dB Audio  Message
235945 -14 1901  RV3SBS M1AQR -23
000000  -8  403  M1AQR RV3SBS 73
000045  -5  403  HF100PKP RV3SBS KO94
000115 -10  403  YO8RSL RV3SBS KO94
000215  -6  403  HF100PKP RV3SBS KO94 (x2)
001300 -20  403  UK8FCM RV3SBS KO94
002500  -6  403  UA3GOM RV3SBS KO94
003215  -6  403  HF100PKP RV3SBS KO94
003730  +2  403  DL7UKM RV3SBS KO94
161300 -12  435  RM3ZK RV3SBS KO94
161400  -9  435  UA3ROJ RV3SBS R+05 (x2)
161545  +8  435  RV3SBS RM3ZK -09 (x2)

160m

UTC    dB Audio  Message
234300 -14  787  RV3SBS RI1FJZ RR73
235230  -4  948  RV3SBS UG4L LO33 (x3)
000700 -18 1975  RV3SBS UA6JQ LN22 (x2)
000830  +7 1516  RV3SBS RZ6BS KN96 (x4)
001000  -4  398  RV3SBS RA3RDN LO02 (x2)
001030 +14 2737  RV3SBS R6OD KN87
001100 -24 1752  RV3SBS UA6JQ LN22
001100 +20 2737  RV3SBS R6OD KN87

20m

UTC    dB Audio  Message
053415 -20 1328  RV3SBS PD2WL JO22
033700 -24 1672  RV3SBS RX6ACJ R-15
043100  +0  883  RV3SBS UA3ZQN -06 (x3)
081545 -11  549  RV3SBS F1ODM -15
172130 -17 1484  RV3SBS R6DZD RR73
093730  +4  395  RV3SBS OE5NVL JN68
033330  -6  601  RV3SBS TN8GD -17 (x2)
034230 -10  527  RV3SBS 7Z1GC -21
070230  +0  438  RV3SBS RX7O RR73
071230 -16  880  W4U RV3SBS KO94
071645 -22 1855  RV3SBS EW8G -12 (x2)

10m

UTC    dB Audio  Message
082600 -18 2256  RV3SBS YO6LM RR73
080230 -24 1656  RV3SBS RL1B RR73
081100 -16 1003  RV3SBS OH3OJ RR73
081400  -8 2311  RV3SBS RC9F -07 (x2)
160830 -15 1259  RV3SBS R6KEE RR73
161045 -12  839  RV3SBS UA6BGM -11 (x2)

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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