UT3USX — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Ukraine Most frequent locator attributed to this token: KO50

Receiver-side FT8 activity involving UT3USX, decoded by SO8OO in southeastern Poland. 55 FT8 messages attributed to this token as transmitter, on 80m, 40m, across 3 UTC dates in the available aggregate history. Observed between 2026-08-30 and 2026-09-12.

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 55 FT8 messages attributed to UT3USX as the transmitting token by decoded message structure across 3 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (76%), followed by 40 m (24%). Several six-hour UTC windows tied for the largest share (98%), so no unique busiest interval is claimed. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (78%); the estimated median was +1 dB.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

+1 dB

Estimated median S/N

Bands

80m · 42 40m · 13

First attributed message: 2026-08-30
Last attributed message: 2026-09-12 20:57 UTC

Observed FT8 message patterns

Attributed sample: 55 messages
Active dates: 3 UTC dates
Estimated median S/N: +1 dB
Estimated 10th-90th percentile: -16 to +7 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 6, moderate (-15 to -9 dB) 6, strong (≥ -8 dB) 43.

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 UT3USX in decoded directed-looking exchanges:

A61FJ · United Arab Emirates 4L1FL · Georgia 9A3TY · Croatia 9K2YM · Kuwait E75C · Bosnia-Herzegovina HB9TWU · Switzerland JG3LGD · Japan K1SM · United States PD0WL · Netherlands 5Z4VJ · Kenya BA8BLK · China DJ1KW · Fed. Rep. of Germany

Most frequent locator attributed to UT3USX

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: KO50 · 30 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 658 km (approx.)
Last such locator decoded: 2026-09-12 20:48 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	UT3USX S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-12 21:26	40m	- / -	SA6KLO	-1 / -	9	Partial capture
09-12 21:26	40m	- / -13	M0PEL	-3 / -	4	✓ Closing fragment
09-12 21:20	40m	- / -15	CT2HEX	-13 / -	3	Partial capture
09-12 21:16	40m	- / -21	CT2HEX	-16 / -	3	Partial capture
09-12 21:16	40m	- / +3	DL7ACA	+8 / -	2	✓ Closing fragment
09-12 21:10	40m	- / -8	ON1DGN	-8 / -	2	✓ Closing fragment
09-12 21:09	40m	- / -8	PF0JB	-7 / -	2	✓ Closing fragment
09-12 21:00	40m	- / -2	PC2J	-7 / -	3	✓ Closing fragment
09-12 20:53	40m	-12 / -5	IC8TEM	-2 / -	3	✓ Closing observed
09-12 20:51	40m	-18 / -6	OT4R	0 / -	3	✓ Closing observed
09-12 20:50	40m	-13 / -6	IK5EEA	-2 / -12	5	✓ Full exchange observed
09-12 20:48	40m	-12 / 0	OZ1NIB	-14 / -14	5	✓ Full exchange observed
09-12 20:45	40m	- / -15	DJ1KW	+6 / -	2	✓ Closing fragment
09-08 23:58	40m	- / -10	EB3JT	-11 / -	5	✓ Closing fragment
09-08 23:57	40m	- / -4	PV8AJ	-6 / -	2	✓ Closing fragment
09-08 23:42	40m	- / -11	KP4PW	-14 / -	2	✓ Closing fragment
09-08 23:41	40m	- / -10	5Z4VJ	-8 / -	2	✓ Closing fragment
09-04 01:56	80m	- / -	UR3QCB	-2 / -	2	Partial capture
09-03 23:58	80m	+8 / -	ON5WR	-5 / -12	4	✓ Closing observed
09-03 23:54	80m	- / -13	ON5WR	-7 / -	2	Partial capture
09-03 23:50	80m	+3 / -	TF3VS	- / -	4	Partial capture
09-03 23:49	80m	- / -	EA1IOK	-10 / -	2	Partial capture
09-03 23:48	80m	+2 / -12	DL1UDO	-2 / -11	5	✓ Full exchange observed
09-03 23:47	80m	+4 / 0	SV1SSL	+1 / -8	4	✓ Full exchange observed
09-03 23:45	80m	-6 / -	KP4AA	- / -	3	Partial capture
09-03 23:43	80m	+1 / -	OZ1NIB	- / -	3	Partial capture
09-03 23:41	80m	+4 / -1	LA3BO	+4 / -4	6	✓ Full exchange observed
09-03 23:40	80m	+4 / -	OK1HEH	-4 / -15	3	✓ Closing observed
09-03 23:38	80m	+2 / -	TF3VS	- / -	2	Partial capture
09-03 23:37	80m	-1 / -7	TA1SY	-24 / -	5	✓ Closing observed
09-03 23:34	80m	- / -	UA4FKT	+7 / -	5	Partial capture
09-03 23:32	80m	+4 / +1	IK0CHU	-7 / -17	7	✓ Closing observed
09-03 23:32	80m	- / -1	HB10GBT	-12 / -	2	Partial capture
09-03 23:27	80m	+4 / -	RI1FJL	- / -	9	Partial capture
08-27 04:41	20m	- / -11	4L1FL	+18 / -	2	✓ Closing fragment
08-26 21:24	20m	- / -12	9K2YM	-2 / -	2	✓ Closing fragment
08-26 15:30	10m	- / -15	II7MGXX	-12 / -	2	Partial capture
08-26 05:47	20m	- / -24	HB9TWU	-6 / -	2	✓ Closing fragment
08-25 21:36	20m	- / -	F5PBG	+5 / -	4	Partial capture
08-25 21:25	20m	- / -23	K1SM	-5 / -	3	✓ Closing fragment
08-25 19:33	20m	- / -12	ON1JP	-8 / -	6	Partial capture
08-25 19:33	20m	- / -24	PD0WL	-2 / -	5	✓ Closing fragment
08-25 17:41	60m	- / -22	OH/SM5MRW	-13 / -	2	Partial capture
08-25 15:51	20m	- / -14	JG3LGD	-2 / -	2	✓ Closing fragment
08-25 07:22	20m	- / -9	E75C	+4 / -	2	✓ Closing fragment
08-24 20:32	20m	- / -16	DL6KA	-1 / -	6	Partial capture

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
212115 -13 1315  UT3USX CT2HEX R-15
212615  -3 2434  UT3USX M0PEL JO01
212645  -2 3034  UT3USX SA6KLO JO68
212645  -2 2434  UT3USX M0PEL JO01
212715  -7 3034  UT3USX SA6KLO JO68
212715  -3 2434  UT3USX M0PEL R-13
212745  -2 3034  UT3USX SA6KLO JO68
212745  -3 2434  UT3USX M0PEL 73
212815  -1 3034  UT3USX SA6KLO JO68 (x2)
212845  -4 1897  UT3USX PD7BDN 73
212915  +3 3034  UT3USX SA6KLO JO68 (x4)

80m

UTC    dB Audio  Message
235030  +2 1621  TF3VS UT3USX KO50 (x4)
235230  +3 1621  ON5WR UT3USX KO50
235445  -3 1697  UT3USX ON5WR -13 (x2)
235800  +4 1502  ON5WR UT3USX R-12
235815  -5 1697  UT3USX ON5WR RR73
235830  +9 1502  ON5WR UT3USX R-12 (x2)
001300 -15 1689  UT3USX UR3QCB KN77 (x4)

20m

UTC    dB Audio  Message
212530  -5 2362  UT3USX K1SM -23 (x2)
213600  +5 2068  UT3USX F5PBG IN78 (x4)
051145  +0 1134  UT3USX SV8JVM -16
054730  -7 1482  UT3USX HB9TWU -24 (x2)
091800  -7  774  UT3USX GM2TT -20
212430  +0 1441  UT3USX 9K2YM -12 (x2)
044145 +17  500  UT3USX 4L1FL -11 (x2)
131545  -9  814  UT3USX RA1OAK -10

10m

UTC    dB Audio  Message
133345 -24 1697  UT3USX A61FJ RR73
153030 -10  980  UT3USX II7MGXX -15 (x2)

60m

UTC    dB Audio  Message
174100 -13 1678  UT3USX OH/SM5MRW -22 (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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