UR0UF — FT8 activity observed at SO8OO

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

Receiver-side FT8 activity involving UR0UF, decoded by SO8OO in southeastern Poland. 463 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, across 15 UTC dates in the available aggregate history. Observed between 2026-06-10 and 2026-08-09.

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 463 FT8 messages attributed to UR0UF as the transmitting token by decoded message structure across 15 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (54%), followed by 20 m (28%) and 80 m (18%). Most decodes (68%) fell within the six-hour window 15:00-21:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (72%); the estimated median was -4 dB.

Overview

463

Messages attributed

UTC dates decoded

Active 15-min windows

-4 dB

Estimated median S/N

Bands

80m · 84 40m · 250 20m · 129

First attributed message: 2026-06-10
Last attributed message: 2026-08-09 05:18 UTC

Observed FT8 message patterns

Attributed sample: 463 messages
Active dates: 15 UTC dates
Estimated median S/N: -4 dB
Estimated 10th-90th percentile: -14 to +6 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 36, moderate (-15 to -9 dB) 94, strong (≥ -8 dB) 333.

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 UR0UF in decoded directed-looking exchanges:

9A4DK · Croatia ×2 EA8CVR · Canary Islands ×2 YO4GIY · Romania ×2 YO3HUI · Romania ×2 G8OO · England HB9EFK · Switzerland NP3YL · Puerto Rico PP5BP · Brazil 3A2MW · Monaco 7Z1BM · Saudi Arabia 8Z1IT · Saudi Arabia A71XX · Qatar

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 UR0UF

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 · 292 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 658 km (approx.)
Last such locator decoded: 2026-08-09 05:18 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	UR0UF S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-18 13:10	10m	- / -	CS7BLU	-5 / -	6	Partial capture
08-09 19:51	80m	- / -4	PI4DX	+10 / -	6	Partial capture
08-09 05:17	40m	-12 / -	SP9OJ	- / -	2	Partial capture
08-09 05:09	80m	+4 / -	<...>	- / -	3	Partial capture
08-08 20:37	80m	+3 / +10	YO1BRANCUSI	+5 / -9	3	Partial capture
08-08 20:37	80m	+4 / -	<...>	- / +1	2	Partial capture
08-08 18:38	40m	- / -4	DR800WE	-4 / -	2	Partial capture
08-08 17:51	80m	+4 / -	<...>	- / -18	2	Partial capture
08-07 20:07	40m	-10 / -	<...>	- / -4	2	Partial capture
08-07 20:03	80m	0 / +10	YU0U	+9 / -6	8	✓ Full exchange observed
08-07 19:27	80m	- / -	UA4FKT	+2 / -	3	Partial capture
08-07 19:21	80m	0 / -	EN35UKR	- / -	2	Partial capture
08-07 19:15	80m	+6 / -2	<...>	-14 / -14	18	Partial capture
08-07 19:08	80m	- / -3	EN35UKR	-11 / -	2	Partial capture
08-07 19:07	80m	+8 / -4	<...>	-8 / -	6	Partial capture
08-07 19:03	20m	- / -6	8Z1IT	-11 / -	2	✓ Closing fragment
08-07 18:54	40m	-1 / -	LA6RJA	- / -	2	Partial capture
08-07 18:48	40m	-2 / -	IV3IEA	- / -	2	Partial capture
08-07 18:43	40m	-1 / -	<...>	- / -12	4	Partial capture
08-07 18:37	40m	+1 / -	SQ8LE	- / -	3	✓ Closing fragment
08-07 18:33	40m	0 / -	<...>	- / -15	3	Partial capture
08-07 18:32	40m	-6 / -	8S2A	- / -13	3	✓ Closing fragment
08-07 18:31	40m	-7 / -	LZ3HG	- / -3	2	✓ Closing fragment
08-07 13:28	20m	-7 / -	SQ9LFQ	- / -8	3	Partial capture
08-07 13:27	20m	-6 / -	UX7QV	- / -	2	Partial capture
08-07 08:08	20m	-11 / -	4X1UF	- / -	2	Partial capture
08-07 07:55	20m	-11 / -	HA1ZW	- / -14	3	✓ Closing fragment
08-07 07:53	20m	-2 / -6	F1ODM	-7 / -14	7	✓ Full exchange observed
08-07 07:52	20m	-6 / -	F4MQS/P	- / -	2	Partial capture
08-07 05:38	20m	- / +5	HB9TWU	-13 / -	2	✓ Closing fragment
08-07 05:08	20m	- / -8	EB3JT	+1 / -	3	✓ Closing fragment
08-06 22:21	20m	-4 / -	VE9RA	- / -	2	Partial capture
08-06 21:25	80m	- / -	UA4FKT	+7 / -	3	Partial capture
08-06 21:24	80m	+9 / -10	<...>	-19 / -18	2	Partial capture
08-06 20:19	80m	+5 / -7	SP6FME	+15 / -9	6	✓ Full exchange observed
08-06 20:17	80m	+7 / -4	UR5HAN	+13 / +6	5	✓ Full exchange observed
08-06 20:16	80m	+6 / -1	Z62NS	+7 / -17	5	✓ Full exchange observed
08-06 20:15	80m	+6 / -	UR5HAN	- / -	2	Partial capture
08-06 19:50	80m	+6 / -10	US2YW	+8 / -7	4	✓ Full exchange observed
08-06 19:47	80m	+4 / -10	4Z5AV	-8 / -	4	✓ Closing observed
08-06 19:43	80m	+4 / -	<...>	- / -	2	Partial capture
08-06 19:39	40m	-5 / -	LA2GCA	- / -2	3	✓ Closing fragment
08-06 19:37	40m	+2 / -5	E74K	-9 / -8	6	✓ Full exchange observed
08-06 18:43	80m	+7 / -6	UR5VLC	+6 / -13	5	✓ Full exchange observed
08-06 18:16	80m	+10 / +2	OH6O	+6 / -15	7	✓ Full exchange observed
08-06 16:30	40m	-13 / -	T77WD	- / -	2	Partial capture
08-06 16:19	40m	-4 / -	UT5ZC	-15 / -4	4	✓ Closing observed
08-06 16:12	40m	-9 / -	SP5KRD	- / -16	4	Partial capture
08-06 15:38	40m	-7 / -	<...>	- / -	8	Partial capture
08-06 13:56	10m	- / -1	G8OO	-12 / -	3	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

10m

UTC    dB Audio  Message
094130 -24 1970  UR0UF SV1EKI KM18
103400 -22 1919  UR0UF DK8EE JO41 (x2)
135615 -15 1363  UR0UF G8OO JO02 (x3)
105200 -17  999  UR0UF EN35UKR -07
105330 -20 1160  UR0UF RC6BB KN84
094130 -17 2439  UR0UF <...> -20
131045  -1  593  UR0UF CS7BLU IM58 (x6)

80m

UTC    dB Audio  Message
203730  +5 2118  UR0UF YO1BRANCUSI +10
203745  +4  837  <...> UR0UF R+01
203845  +4  837  YO1BRANCUSI UR0UF KO50
203900  -7 1904  UR0UF EN35UKR -05
203915  +2  838  YO1BRANCUSI UR0UF R-09
050915  +5  838  <...> UR0UF KO50 (x4)
195115  +7  914  UR0UF PI4DX -04 (x6)

40m

UTC    dB Audio  Message
185445  -2  505  LA6RJA UR0UF KO50
185545  -7 1451  UR5ZGY UR0UF KO50
200730 -12 1478  <...> UR0UF KO50
200745  -8 2306  UR0UF YO1BRANCUSI -11
200800  -7 1174  <...> UR0UF R-04
200845 -13 1834  UR0UF SP0DF -02
201130  -3 1276  SP0DF UR0UF R-08
044630  -3  539  <...> UR0UF KO50 (x2)
183800  -4  291  UR0UF DR800WE -04 (x2)
051230  -7 1053  UR0UF OE5MON -11
051600 -14 1584  <...> UR0UF KO50
051730  -9 1584  SP9OJ UR0UF KO50 (x2)

20m

UTC    dB Audio  Message
080745  -7  538  EA5J UR0UF KO50
080830  -8 1423  4X1UF UR0UF KO50 (x3)
130815 -10  827  <...> UR0UF KO50
132730  -5  699  UX7QV UR0UF KO50 (x2)
132845  -7  699  SQ9LFQ UR0UF KO50 (x3)
133115  -5  494  OK2CNI UR0UF KO50
133300  +0 1672  9A5MP UR0UF KO50
133445  -1 1673  LA8OOA UR0UF 73
190300 -12  733  UR0UF 8Z1IT -06 (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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