EU4U — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Belarus Locator transmitted in a decoded message: KO23

Receiver-side FT8 activity involving EU4U, decoded by SO8OO in southeastern Poland. 3,315 related FT8 messages, 2,223 CQ messages, observed on 80m, 40m, 20m, 10m, across 55 UTC dates. Heard between 2026-05-24 and 2026-08-22.

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

3,315

Related messages

2,223

CQ messages

UTC dates heard

-5 dB

Mean decoder S/N

Bands

80m 20m 40m 10m

First seen: 2026-05-24
Last seen: 2026-08-22 18:25 UTC

Frequent QSO partners observed at SO8OO

Stations EU4U worked most often, as logged from our receiver:

OE5OSP · Austria ×3 UB3LBU · European Russia ×3 R5AV · European Russia ×3 RV3X · European Russia ×3 RC6OT · European Russia ×3 EU1EU · Belarus ×2 LB5WB · Norway ×2 8S7DL · Sweden ×2 UT6HN · Ukraine ×2 UA0LQE · Asiatic Russia ×2 EW8DG · Belarus ×2 UA3PTY · European Russia ×2

Activity Heatmap

Locator transmitted by EU4U

Approximate centre of KO23, decoded 2026-08-22 20:24 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	EU4U S/N	Counterpart	Counterpart S/N	Msgs	Capture
08-22 20:24	40m	+2 / +1	OK1GK	-8 / -11	4	✓ Full exchange observed
08-22 20:21	40m	-4 / -7	YT3ZT	-12 / -	3	✓ Closing observed
08-22 17:43	20m	-7 / -22	ON5ED	-10 / -	4	✓ Closing observed
08-21 18:28	20m	- / +9	OE5OSP	+4 / -	2	✓ Closing fragment
08-21 18:24	20m	- / -5	PA3GAE	-10 / -	3	✓ Closing fragment
08-21 18:18	20m	- / 0	DD1MI	-8 / -	3	✓ Closing fragment
08-21 17:57	20m	- / -13	IZ7NLJ	-1 / -	5	✓ Closing fragment
08-21 17:52	20m	- / +3	DL1AN	+21 / -	3	✓ Closing fragment
08-21 17:37	20m	- / -	VU2FR	-20 / -	2	Partial capture
08-21 17:23	20m	- / -7	DM5TB	+4 / -	4	✓ Closing fragment
08-21 17:19	20m	- / -7	DL8RBL	-8 / -	3	✓ Closing fragment
08-20 18:32	40m	+1 / 0	DG3YGA	-8 / -8	5	✓ Full exchange observed
08-20 18:31	40m	-1 / -	R2PT	- / -7	2	✓ Closing fragment
08-20 18:30	40m	+2 / +7	SP9W	+2 / -1	5	✓ Full exchange observed
08-20 18:28	40m	-1 / -	G7LHK	-14 / -7	4	✓ Closing observed
08-20 18:26	40m	-1 / -	OH2HOR	- / -12	2	✓ Closing fragment
08-20 18:25	40m	-2 / +6	R3WBG	-12 / -	4	✓ Closing observed
08-20 18:18	40m	- / -5	IV3VFP	-8 / -	2	✓ Closing fragment
08-20 18:16	40m	-1 / -	SP6JKE	-5 / -14	3	✓ Closing observed
08-19 04:40	40m	-5 / -	I0QMY	-7 / -	2	✓ Closing observed
08-18 19:15	40m	-2 / -	M7SDJ	- / -8	3	✓ Closing fragment
08-18 19:03	40m	-5 / -	R3BBM	- / -1	2	✓ Closing fragment
08-18 18:38	40m	+1 / -1	UB3LBU	-16 / -6	4	✓ Full exchange observed
08-18 18:35	40m	-2 / -	EA2BUW	- / -16	3	✓ Closing fragment
08-18 18:31	40m	-2 / -	PD3Q	-7 / -9	3	✓ Closing observed
08-18 18:29	40m	+1 / -	SP5TBR	- / -11	2	✓ Closing fragment
08-18 18:13	40m	-6 / -14	EU7DA	-12 / -4	5	✓ Full exchange observed
08-18 18:08	40m	-2 / -	RC3DN	- / -9	2	✓ Closing fragment
08-18 18:06	40m	-4 / -	ZL3TX	- / -21	2	✓ Closing fragment
08-17 16:44	20m	- / +1	F5MYH	-6 / -	2	✓ Closing fragment
08-17 06:52	20m	- / -1	R3KLE	-5 / -	3	✓ Closing fragment
08-16 19:21	40m	-2 / -	EB5RCA	- / -14	2	Partial capture
08-16 18:34	40m	0 / -	RC6OT	-8 / -8	4	✓ Closing observed
08-16 18:32	40m	-4 / -9	UA3PTY	-8 / -12	4	✓ Full exchange observed
08-16 16:05	20m	-5 / -	OE9RRI	- / -16	2	✓ Closing fragment
08-16 15:59	20m	- / -12	OE9RRI	-20 / -	2	Partial capture
08-16 15:53	20m	-7 / -	SE7LH	- / -13	2	✓ Closing fragment
08-16 15:01	20m	- / -6	G4YTW	-8 / -	2	✓ Closing fragment
08-16 14:47	20m	- / -12	PD4DX	-20 / -	2	Partial capture
08-16 14:42	20m	- / -8	F4HWM	-11 / -	3	✓ Closing fragment
08-15 19:24	40m	-6 / -	SP2LQR	- / -9	2	✓ Closing fragment
08-15 19:21	40m	-8 / +1	DL4XT	-17 / -10	3	✓ Full exchange observed
08-15 19:19	40m	-4 / -	G4UJS	- / -4	2	✓ Closing fragment
08-15 18:37	40m	-4 / -6	PE1MHY	-13 / -9	4	✓ Full exchange observed
08-15 18:30	40m	-8 / -	JR8AMF	- / -16	2	✓ Closing fragment
08-15 18:28	40m	-5 / -	8C81KS	- / -16	2	Partial capture
08-15 18:19	40m	-4 / -	<...>	- / -3	2	Partial capture
08-15 17:19	20m	- / +10	2W0YOX	-3 / -	2	Partial capture
08-14 19:15	40m	-14 / -	DL1YCS	- / -16	4	Partial capture
08-14 18:58	40m	0 / -	RA3UAG/P	- / -9	2	Partial capture

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
201845  +6 1027  CQ EU4U KO23 (x3)
202100 -15 1642  EU4U YT3ZT R-07
202115  -4 1028  YT3ZT EU4U RR73
202130 -10 1642  EU4U YT3ZT 73
202145  +6 1028  CQ EU4U KO23 (x5)
202430  -9 2035  EU4U OK1GK +01
202445  +0 1028  OK1GK EU4U R-11
202500  -6 2035  EU4U OK1GK RR73
202515  +3 1028  OK1GK EU4U 73

20m

UTC    dB Audio  Message
182430  +7 2714  EU4U OE5OSP JN68
182500  -7 2021  EU4U PA3GAE R-05 (x2)
182830  +4 2714  EU4U OE5OSP R+09 (x2)
174300  -9 2604  EU4U M7GOA JO01
174330  -8 2600  EU4U ON5ED JO21 (x3)
174445  -7 2598  ON5ED EU4U RR73
174645 -13 2595  CQ EU4U KO23 (x4)
174930  -8 1891  EU4U EB3BKW -20

80m

UTC    dB Audio  Message
195845  +6 2809  CQ EU4U KO23 (x2)
195945  -1 2809  R8CW/4 EU4U -06 (x2)
200030  +7 1306  EU4U OL900CO R-25 (x2)
200200  +7  886  EU4U HG25CCS R-02
200245  +0 2809  CQ EU4U KO23 (x8)

10m

UTC    dB Audio  Message
145045 -11 1798  EU4U DL9KM 73
145245 -14  973  EU4U S55A JN65 (x3)
150830  +4 2831  EU4U DK3HV R-10
151200 -21 1796  EU4U CN2DX R-14
152430 -14 2047  EU4U PD1ADA JO21
153100 -10 2096  EU4U DO6KDS R-05 (x2)
153400  -6 1194  EU4U DN9DSP JO31 (x2)
153930 -17 2097  EU4U DO6KDS JO30
154230  -6 2706  EU4U RN6MA +15 (x2)
093445 -22 2159  EU4U RV6HE RR73

Decoder S/N history by band

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