UR4UPQ — FT8 activity observed at SO8OO

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

Receiver-side FT8 activity involving UR4UPQ, decoded by SO8OO in southeastern Poland. 291 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, across 7 UTC dates in the available aggregate history. Observed between 2026-06-10 and 2026-08-21.

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 291 FT8 messages attributed to UR4UPQ as the transmitting token by decoded message structure across 7 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (79%), followed by 20 m (18%) and 40 m (3%). Several six-hour UTC windows tied for the largest share (100%), so no unique busiest interval is claimed. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (89%); the estimated median was +2 dB.

Overview

291

Messages attributed

UTC dates decoded

Active 15-min windows

+2 dB

Estimated median S/N

Bands

80m · 231 40m · 9 20m · 51

First attributed message: 2026-06-10
Last attributed message: 2026-08-21 20:40 UTC

Observed FT8 message patterns

Attributed sample: 291 messages
Active dates: 7 UTC dates
Estimated median S/N: +2 dB
Estimated 10th-90th percentile: -10 to +10 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 11, moderate (-15 to -9 dB) 22, strong (≥ -8 dB) 258.

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 UR4UPQ in decoded directed-looking exchanges:

UN0GY · Kazakhstan ×2 CR7BRV · Portugal ×2 HS0ZOY · Thailand IK5EEA · Italy JA6TXU · Japan KF9UG · United States KZ2I · United States OM3TUR · Slovak Republic Z61DX · Republic of Kosovo DL9KM · Fed. Rep. of Germany G4IFX · England 9A1BTU · Croatia

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 UR4UPQ

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 · 183 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 658 km (approx.)
Last such locator decoded: 2026-07-26 18:01 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	UR4UPQ S/N	Counterpart	Counterpart S/N	Msgs	Capture
08-21 20:40	20m	-12 / -19	HS0ZOY	0 / -13	3	✓ Full exchange observed
08-21 20:26	20m	- / -16	KZ2I	-8 / -	5	✓ Closing fragment
07-15 19:12	20m	- / -	EA5JYL	-8 / -	2	Partial capture
07-15 19:06	20m	-13 / -	OM3TUR	- / -11	3	✓ Closing fragment
07-14 22:47	40m	- / -15	G4IFX	-4 / -	2	✓ Closing fragment
07-14 22:38	40m	-17 / -	IQ0AK	- / -	2	Partial capture
07-14 22:35	40m	-11 / -	CR7BRV	- / -16	2	✓ Closing fragment
07-14 22:26	80m	- / -	EA7L	-11 / -	5	Partial capture
07-14 22:25	80m	+8 / -17	F5RRS	+4 / -9	5	✓ Full exchange observed
07-14 22:24	80m	- / -	UA4FKT	+6 / -	4	Partial capture
07-14 22:23	80m	+6 / -6	IQ4JO	+8 / -9	5	✓ Full exchange observed
07-14 20:07	20m	- / -13	RN6MA	-18 / -	2	Partial capture
07-14 19:41	20m	-14 / -	EC5M	- / -9	2	Partial capture
07-14 19:38	20m	- / -11	Z61DX	+3 / -	2	✓ Closing fragment
07-14 19:32	20m	- / -1	IK5EEA	-2 / -	2	✓ Closing fragment
07-12 18:20	20m	- / -	R2AL	+4 / -	6	Partial capture
07-04 22:42	80m	+2 / -6	OK7GU	+9 / -7	4	✓ Full exchange observed
07-04 22:40	80m	+3 / +3	LA1WWA	-6 / -3	5	✓ Full exchange observed
07-04 22:38	80m	+1 / -	IW9FRA	- / -	3	Partial capture
07-04 22:36	80m	+2 / -18	HB9RYB	-11 / -20	5	✓ Full exchange observed
07-04 22:34	80m	+6 / -	G4ZAM	-16 / -22	3	✓ Closing observed
07-04 22:32	80m	+1 / -7	GI4DOH	-4 / -3	5	✓ Full exchange observed
07-04 22:31	80m	-3 / -	YB1MIG	- / -	2	Partial capture
07-04 22:29	80m	+1 / -6	MM0HVU	-15 / -	2	✓ Closing observed
07-04 22:27	80m	+4 / -1	DL6EL	+13 / -8	5	✓ Full exchange observed
07-04 22:27	80m	- / -1	R2EN	+4 / -	4	Partial capture
07-04 22:26	80m	+1 / -20	SP9OJ	0 / -	2	Partial capture
07-04 22:25	80m	0 / -	YB1MIG	- / -	2	Partial capture
07-04 22:22	80m	+2 / -	DH4PAP	- / -	5	Partial capture
07-04 22:21	80m	0 / -13	SP9MOA	-5 / -14	5	✓ Full exchange observed
07-04 22:17	80m	0 / -2	E75CC	+12 / -6	6	✓ Full exchange observed
07-04 22:14	80m	- / 0	R2EN	+8 / -	4	Partial capture
07-04 22:12	80m	-1 / -3	PA3MVD	-6 / -21	4	✓ Full exchange observed
07-04 22:09	80m	- / -2	R2EN	+6 / -	2	Partial capture
07-04 22:08	80m	+4 / -3	CR7BRV	-3 / -17	5	✓ Full exchange observed
07-04 22:04	80m	+2 / +2	OM1AGE	-2 / -	3	✓ Closing observed
07-04 21:56	80m	- / -4	R2EN	+9 / -	2	Partial capture
07-04 21:52	80m	+2 / -	PY5XT	- / -19	4	✓ Closing fragment
07-04 21:46	80m	+8 / -	RN6MA	- / -9	6	Partial capture
07-04 21:45	80m	+8 / -15	PA3BMB	+4 / -12	4	✓ Full exchange observed
07-04 21:42	80m	+9 / -9	DK7TX	+10 / -13	5	✓ Full exchange observed
07-04 21:34	80m	+9 / -	DO1ZTR	- / -16	3	Partial capture
07-04 21:31	80m	+8 / -	DL1ASX	+2 / -14	3	✓ Closing observed
07-04 21:27	80m	-1 / -	DK0SE	- / -	2	Partial capture
07-04 21:21	80m	+4 / -11	DL1SA	-12 / -13	4	✓ Full exchange observed
07-04 21:20	80m	+4 / +10	OH5WWA	+8 / -5	5	✓ Full exchange observed
07-04 21:15	80m	+5 / -10	OZ5AGJ	-4 / -12	5	✓ Full exchange observed
07-04 21:12	80m	+10 / +1	9A2AJ	+12 / -5	5	✓ Full exchange observed
07-04 21:09	80m	+8 / -	SP9UH	- / -	2	Partial capture
07-04 21:07	80m	-1 / -	SN4WWA	- / -	3	Partial capture

Recent FT8 messages decoded at SO8OO

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

20m

UTC    dB Audio  Message
190700 -15  899  OM3TUR UR4UPQ 73
191100 -20 1758  KF9UG UR4UPQ 73
191245  -7  478  UR4UPQ EA5JYL IM98 (x2)
180115  -7 2271  BG7BMG UR4UPQ KO50
193600 -11 2583  UR4UPQ RN6MA -13
201800  -4  453  UR4UPQ F4VWK -04
202615  -6 1858  UR4UPQ KZ2I -16 (x5)
204015  +1  402  UR4UPQ HS0ZOY -19
204030 -12  403  HS0ZOY UR4UPQ R-13
204045  +0  402  UR4UPQ HS0ZOY RR73

40m

UTC    dB Audio  Message
223530 -12  592  CR7BRV UR4UPQ R-16 (x2)
223845 -18 2379  IQ0AK UR4UPQ KO50 (x2)
224445 -24 1167  YT2FA UR4UPQ R-10
224700  -4 1978  UR4UPQ G4IFX -15 (x2)
224845 -24 1393  EA3IWJ UR4UPQ KO50
224915 -10  735  SP6SR UR4UPQ KO50
225045 -17 2391  S56KO UR4UPQ KO50
225245 -24 1745  DL9KM UR4UPQ RR73

80m

UTC    dB Audio  Message
222515  +9  916  UR4UPQ UA4FKT LO23
222530  +5  916  CQ UR4UPQ KO50
222545 +11  916  UR4UPQ UA4FKT LO23
222545  +2 1996  UR4UPQ F5RRS JN36
222600  +7  915  F5RRS UR4UPQ -09
222615  +6 1996  UR4UPQ F5RRS R-17
222615 -10  916  UR4UPQ EA7L IM86
222630 +10  916  F5RRS UR4UPQ RR73
222645  +4 1996  UR4UPQ F5RRS 73
222645  -9  916  UR4UPQ EA7L IM86
222700  +5  916  CQ UR4UPQ KO50                        a1
222715  -8  915  UR4UPQ EA7L IM86
222730  +4  916  CQ UR4UPQ KO50
222745 -15  915  UR4UPQ EA7L IM86 (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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