UF4S — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: European Russia Locator transmitted in a decoded message: LO45

Receiver-side FT8 activity involving UF4S, decoded by SO8OO in southeastern Poland. 5,328 related FT8 messages, 3,958 CQ messages, observed on 160m, 80m, 40m, 20m, 10m, across 13 UTC dates. Heard between 2026-05-22 and 2026-08-06.

These are automated observations at the SO8OO receiver, not the station's official logbook. Times are UTC. Decoder S/N describes messages received at SO8OO; inferred entity and location data may be inaccurate for portable, remote or special-event operation.

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Overview

5,328

Related messages

3,958

CQ messages

UTC dates heard

-3 dB

Mean decoder S/N

Bands

80m 20m 40m 10m 160m

First seen: 2026-05-22
Last seen: 2026-08-06 10:49 UTC

Frequent QSO partners observed at SO8OO

Stations UF4S worked most often, as logged from our receiver:

IK4LZH · Italy ×4 UI5A · European Russia ×3 SP9EVL · Poland ×2 RA6AR · European Russia ×2 E70SZ · Bosnia-Herzegovina ×2 IZ0AIO · Italy ×2 RA6KR · European Russia ×2 DL1SRS · Fed. Rep. of Germany ×2 G4DBW · England ×2 R6YG · European Russia ×2 SP5DFK · Poland ×2 R1CF/P · European Russia ×2

Activity Heatmap

Locator transmitted by UF4S

Approximate centre of LO45, decoded 2026-07-05 03:57 UTC. A transmitted locator is not proof of the operator's permanent location.

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	UF4S S/N	Counterpart	Counterpart S/N	Msgs	Capture
08-06 12:48	20m	- / -	SP1ZMO	-18 / -	2	Partial capture
07-04 21:53	80m	+3 / -	M9NTS	-14 / -12	3	✓ Closing observed
07-04 21:47	80m	+9 / -	SP9MOA	0 / -16	3	✓ Closing observed
07-04 21:43	80m	+10 / -7	IW5DNZ	+3 / -8	5	✓ Full exchange observed
07-04 21:41	80m	+12 / -1	R3KJF	+5 / -1	5	✓ Full exchange observed
07-04 21:38	80m	+10 / -	RZ6LE	- / -4	2	✓ Closing fragment
07-04 21:36	80m	+10 / +6	RN2F	+9 / +1	5	✓ Full exchange observed
07-04 21:21	80m	-2 / -	PR2EG	- / -14	4	✓ Closing fragment
07-04 21:10	80m	+10 / -	G4DBW	-9 / -10	3	✓ Closing observed
07-04 21:06	80m	+8 / -	VK8DR	- / -18	3	✓ Closing fragment
07-04 21:03	80m	-1 / -	RK4HS	- / -9	2	✓ Closing fragment
07-04 20:58	80m	0 / -3	SP5PDA	-6 / -6	4	✓ Full exchange observed
07-04 20:55	80m	+4 / -5	YU7AS	+16 / -6	5	✓ Full exchange observed
07-04 20:54	160m	- / -	R7CD	+3 / -	3	Partial capture
07-04 20:40	80m	-20 / -7	UA3IHJ	+12 / +1	5	✓ Full exchange observed
07-04 20:29	80m	- / -	R4HLO/P	-10 / -	8	Partial capture
07-04 20:24	80m	-20 / -6	R7CD	-2 / -3	4	✓ Full exchange observed
07-04 20:19	80m	-19 / -15	9A3MKK	-8 / -	3	✓ Closing observed
07-04 20:15	80m	+7 / -	R1BGR	-22 / -5	3	✓ Closing observed
07-04 20:13	80m	- / -	LA1HW	-17 / -	2	Partial capture
07-04 20:13	80m	+9 / -7	R3BDQ	+1 / -3	5	✓ Full exchange observed
07-04 20:11	80m	+6 / -	RD3MF	- / -2	2	✓ Closing fragment
07-04 20:10	80m	+8 / +5	IV3GHY	+6 / -4	6	✓ Full exchange observed
07-04 20:08	80m	+8 / -	JA5AQC	- / -12	2	✓ Closing fragment
07-04 20:02	80m	+4 / -	UK8FCM	- / -6	2	✓ Closing fragment
07-04 20:00	80m	+6 / +8	SP5DRK	+8 / -13	5	✓ Full exchange observed
07-04 19:57	80m	+6 / -	LA1HW	- / -17	4	✓ Closing fragment
07-04 19:47	80m	+4 / -	RK6OV	-17 / -2	4	✓ Closing observed
07-04 19:46	80m	+3 / -	UB3DRL	- / 0	2	✓ Closing fragment
07-04 19:44	80m	+2 / -	JH2VVH	- / -14	2	Partial capture
07-04 19:38	80m	-2 / -	RV9CD	- / -12	2	✓ Closing fragment
07-04 19:31	80m	-4 / -	US1EA	+5 / 0	6	✓ Full exchange observed
07-04 19:30	80m	0 / -	R4FV	+10 / -	2	✓ Closing observed
07-04 19:27	80m	- / -	R3PBA	-3 / -	2	Partial capture
07-04 19:27	80m	- / -10	R4FV	+3 / -	2	Partial capture
07-04 19:27	80m	+5 / -	RA4ADF	-20 / -5	4	✓ Closing observed
07-04 19:25	80m	- / -	R1TAX	+2 / -	2	Partial capture
07-04 19:15	80m	-1 / -	R4SCQ	- / -4	2	✓ Closing fragment
07-04 19:12	80m	0 / -1	DH1NSP	-1 / -18	4	✓ Full exchange observed
07-04 19:08	80m	0 / -5	RA3LJ	-6 / -1	4	✓ Full exchange observed
07-04 19:06	80m	+5 / -	R3YBG	- / -11	2	✓ Closing fragment
07-04 19:04	80m	+7 / -5	UA4FOH	0 / +2	4	✓ Full exchange observed
07-04 19:03	80m	-2 / -	UB4CLH	- / -6	2	✓ Closing fragment
07-04 19:01	80m	+5 / -15	EW7DT	0 / -10	4	✓ Full exchange observed
07-04 18:49	80m	- / -	IK6BMU	-18 / -	2	Partial capture
07-04 18:47	80m	0 / -3	UG4I	-4 / -3	6	✓ Full exchange observed
07-04 18:46	80m	+2 / -	RC3C	-16 / -3	4	✓ Full exchange observed
07-04 17:28	20m	- / +9	IW4DV	+6 / -	3	✓ Closing fragment
07-04 14:54	20m	- / -	PA0GSP	-18 / -	2	Partial capture
07-04 14:33	20m	-20 / -	UA3WG	- / -8	2	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

20m

UTC    dB Audio  Message
143200 -20 1539  CQ UF4S LO45 (x2)
143300 -21 1539  UA3WG UF4S -08 (x2)
143430 -24 1539  UB6LLI UF4S -17
144615 -24 1718  UF4S F6CAX JO00
145415 -19 1538  UF4S PA0GSP JO21 (x2)
172845  +6 2915  UF4S IW4DV JN54 (x3)
035200 -24 1798  CQ UF4S LO45 (x2)
124830 -19 1404  UF4S SP1ZMO JO73 (x2)

80m

UTC    dB Audio  Message
215445 -14 1090  UF4S M9NTS 73
215530  +6 1756  CQ UF4S LO45 (x13)
235045  -4 1756  UF4S SP9JMZ JO90

160m

UTC    dB Audio  Message
223430  +1 1582  CQ UF4S LO45 (x9)
223930  -2 1582  UA3ECJ UF4S -03
223945  -4 1725  UF4S UA3ECJ R+07 (x2)
205415  +4 1177  UF4S R7CD KN94 (x3)

40m

UTC    dB Audio  Message
003200  -9 1216  CQ UF4S LO45 (x12)
220430  +1 1622  G0TIX UF4S -07 (x2)
220615 -24 1732  UF4S MM0HVU -09

10m

UTC    dB Audio  Message
073745 -15 1479  UF4S R2HB KO85
073800  -8 1645  CQ UF4S LO45
073815 -13 1646  UF4S UA6AFS LN05
073830 -20 1645  YL3CW UF4S -12
073845 -15 2514  UF4S YL3CW R-11
073900 -15 1645  YL3CW UF4S RR73
073930 -13 1645  CQ UF4S LO45
074100 -16 1645  UA6AFS UF4S 73
074130 -15 1645  CQ UF4S LO45 (x7)

Decoder S/N history by band

Daily averages across messages associated with this profile as decoded at SO8OO.