UX7UU — FT8 activity observed at SO8OO

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

Receiver-side FT8 activity involving UX7UU, decoded by SO8OO in southeastern Poland. 435 FT8 messages attributed to this token as transmitter, on 40m, 20m, across 13 UTC dates in the available aggregate history. Observed between 2026-07-11 and 2026-08-28.

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 435 FT8 messages attributed to UX7UU as the transmitting token by decoded message structure across 13 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (67%), followed by 40 m (33%). Most decodes (70%) 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 (79%); the estimated median was +0.4 dB.

Overview

435

Messages attributed

UTC dates decoded

Active 15-min windows

+0.4 dB

Estimated median S/N

Bands

40m · 142 20m · 293

First attributed message: 2026-07-11
Last attributed message: 2026-08-28 19:09 UTC

Observed FT8 message patterns

Attributed sample: 435 messages
Active dates: 13 UTC dates
Estimated median S/N: +0.4 dB
Estimated 10th-90th percentile: -13 to +11 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 28, moderate (-15 to -9 dB) 65, strong (≥ -8 dB) 342.

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 UX7UU in decoded directed-looking exchanges:

SP7SZJ · Poland ×2 UR5BIO · Ukraine ×2 VK5IPA · Australia ON7HM · Belgium UT3SO · Ukraine LB6LK · Norway GB2CG · Scotland ES4TIX · Estonia YC0BYR · Indonesia SP8WB · Poland BD8CS · China BA3NZ · China

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 UX7UU

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 · 307 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 658 km (approx.)
Last such locator decoded: 2026-08-28 19:09 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	UX7UU S/N	Counterpart	Counterpart S/N	Msgs	Capture
08-28 19:02	40m	+12 / -7	AO5FSB	-10 / -16	8	✓ Full exchange observed
08-28 18:42	40m	+8 / -	SP5MIG	- / -	4	Partial capture
08-28 11:08	10m	- / -24	OO6P	-18 / -	3	Partial capture
08-28 07:49	10m	- / -13	PD1UM	-10 / -	4	✓ Closing fragment
08-28 07:49	10m	- / -	RW6HP	-23 / -	3	Partial capture
08-27 19:08	40m	+9 / -2	SP7SZJ	+2 / -19	7	✓ Full exchange observed
08-27 19:05	40m	+13 / -	LY2BSW	-13 / -10	5	✓ Closing observed
08-27 18:44	40m	+7 / -	<...>	- / -14	3	Partial capture
08-27 18:27	40m	-1 / -	YO2AMU	- / -	4	Partial capture
08-27 18:22	40m	-2 / -	SQ8V	- / -	3	Partial capture
08-27 18:21	40m	0 / -	SA3KAK	- / -	2	Partial capture
08-27 18:18	40m	+8 / -	OK8CZ	- / -	2	Partial capture
08-27 18:16	40m	+8 / -	<...>	- / -5	2	Partial capture
08-27 18:10	40m	+6 / -5	US5WE	+5 / -12	9	✓ Full exchange observed
08-27 18:04	40m	+2 / -	F4BNZ	- / -22	6	✓ Closing fragment
08-27 17:57	40m	+8 / -1	ES4TIX	-8 / -	3	✓ Closing observed
08-27 17:53	40m	+1 / -12	PD7BB	-6 / -18	5	✓ Full exchange observed
08-27 17:52	40m	+8 / -	ES4TIX	- / -	2	Partial capture
08-27 17:49	40m	+9 / -19	UK8OM	-13 / -24	4	✓ Full exchange observed
08-27 16:31	40m	-2 / -7	YO4KMU	+7 / -12	5	✓ Full exchange observed
08-27 16:06	40m	-1 / 0	SP8WB	-10 / -	5	✓ Closing observed
08-27 11:43	10m	- / +5	ON7HM	-13 / -	4	✓ Closing fragment
08-27 11:26	10m	- / +8	DG9WH	-18 / -	2	✓ Closing fragment
08-27 09:46	10m	- / +3	IQ4JO	-10 / -	2	✓ Closing fragment
08-26 21:24	40m	+6 / -	CN8NS	-4 / -24	8	✓ Closing observed
08-26 21:02	40m	+10 / -	DL1ERZ	- / -	2	Partial capture
08-26 21:00	40m	+10 / -	G8WIL	- / -	2	Partial capture
08-26 20:57	40m	+12 / -	IT9EJW	- / -19	4	✓ Closing fragment
08-26 20:54	40m	+9 / -	IK0QDM	- / -	4	Partial capture
08-26 20:46	40m	+4 / -	<...>	- / -8	8	Partial capture
08-26 20:29	40m	+7 / -	CT2HEX	- / -17	3	✓ Closing fragment
08-26 20:23	40m	+10 / +4	SP2GG	-4 / -18	9	✓ Full exchange observed
08-26 20:19	40m	- / -	EA5FD	-10 / -	2	Partial capture
08-26 20:17	40m	+8 / -11	IK3ERN	+8 / -11	5	✓ Full exchange observed
08-26 20:16	40m	+6 / -9	SP2GPL	-2 / -13	5	✓ Full exchange observed
08-26 20:14	40m	+5 / -	TA6MMI	-4 / -24	4	✓ Closing observed
08-26 20:11	40m	+2 / -14	MM0GHM	-8 / -17	7	✓ Full exchange observed
08-26 20:04	40m	+5 / -18	DL3RDO	-1 / -12	5	✓ Full exchange observed
08-26 20:03	40m	+4 / -10	PE1NAO	-4 / -25	6	✓ Full exchange observed
08-26 20:00	40m	- / -	DJ9BI	-6 / -	2	Partial capture
08-26 19:59	40m	+6 / -3	HA5UA	-2 / -15	6	✓ Full exchange observed
08-26 18:55	40m	- / -	IW0RLC	+9 / -	5	Partial capture
08-26 18:52	40m	+8 / -	F4NGR	- / -17	5	Partial capture
08-26 18:51	40m	+10 / -	US5RK	- / -	2	Partial capture
08-26 18:48	40m	+7 / -1	UR5BIO	+1 / -9	5	✓ Full exchange observed
08-26 18:46	40m	+5 / -10	LB6LK	-3 / -10	5	✓ Full exchange observed
08-26 18:45	40m	+5 / -	EG5DX	- / -22	2	✓ Closing fragment
08-26 18:43	40m	+6 / -	<...>	- / -	2	Partial capture
08-21 19:48	20m	- / +1	AH2O	-7 / -	2	✓ Closing fragment
08-21 17:50	20m	-7 / -	MW1CFA	- / -7	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
190945  +1 1214  UX7UU SP7SZJ RR73
191000  +6 2241  SP7SZJ UX7UU 73
184245  +8 2427  SP5MIG UX7UU KO50 (x4)
190245 +11 2489  AO5FSB UX7UU KO50 (x4)
190430 -10 2133  UX7UU AO5FSB -07
190445 +10 2489  AO5FSB UX7UU R-16
190500  -9 2133  UX7UU AO5FSB RR73
190515 +13 2489  AO5FSB UX7UU 73
190900 +13  731  E75D UX7UU KO50

10m

UTC    dB Audio  Message
114330 -14 2070  UX7UU ON7HM +05 (x3)
073615  +5  775  UX7UU S57MPU -19
074915 -23 1602  UX7UU RW6HP LN14
074915 -10  657  UX7UU PD1UM JO30
074945 -24 1602  UX7UU RW6HP LN14
074945 -10  657  UX7UU PD1UM JO30 (x3)
075130 -23 1601  UX7UU RW6HP LN14
110845 -19 1899  UX7UU OO6P -24 (x4)

20m

UTC    dB Audio  Message
174215  +4 1076  BH4ECL UX7UU R-21
174230 -13 1074  UX7UU BH4ECL RR73
174245  -1 1076  BH4ECL UX7UU 73
175000  -5 1274  MW1CFA UX7UU KO50 (x6)
180100 -13 2706  GS0IYP UX7UU KO50
192230 -14  988  UX7UU DU7/NW5H -11
194815  -5  870  UX7UU AH2O +01 (x2)
052330 -15 2136  UX7UU D2IM -05
073215 -10 2714  <...> UX7UU R-17

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