UB4FJB — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: European Russia Locator transmitted in a decoded message: LO23

Receiver-side FT8 activity involving UB4FJB, decoded by SO8OO in southeastern Poland. 289 related FT8 messages, 11 CQ messages, observed on 160m, 80m, 40m, 20m, across 3 UTC dates. Heard between 2026-05-05 and 2026-08-03.

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

289

Related messages

CQ messages

UTC dates heard

-1 dB

Mean decoder S/N

Bands

80m 20m 40m 160m

First seen: 2026-05-05
Last seen: 2026-08-03 02:14 UTC

Frequent QSO partners observed at SO8OO

Stations UB4FJB worked most often, as logged from our receiver:

SP2OSP · Poland R6ML · European Russia ON6MX · Belgium DL6MRM · Fed. Rep. of Germany ES0MVM · Estonia IK6GTF · Italy F8IPH · France R2EA · European Russia ES4TIX · Estonia SP7ROH · Poland UA4CKN · European Russia OK1CI · Czech Republic

Activity Heatmap

Locator transmitted by UB4FJB

Approximate centre of LO23, decoded 2026-08-03 03:54 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	UB4FJB S/N	Counterpart	Counterpart S/N	Msgs	Capture
08-03 04:13	40m	- / -13	RZ5D	-12 / -	2	Partial capture
08-03 03:58	40m	- / -8	R6TA	-12 / -	2	Partial capture
08-03 02:02	80m	-14 / -9	OK1CI	+12 / -7	6	✓ Full exchange observed
08-03 01:26	80m	-18 / -	SP6LUT	- / -	3	Partial capture
08-03 01:14	80m	-8 / -12	DL2YMG	-7 / -24	3	Partial capture
08-03 01:05	80m	- / -12	9A2LM	+4 / -	2	Partial capture
08-03 01:04	80m	0 / -	IV3JTG	- / -	3	Partial capture
08-03 00:48	80m	+3 / -	YL3AVN	- / -	4	Partial capture
08-03 00:42	80m	-7 / -	DG5RN	- / -	4	Partial capture
08-03 00:31	80m	-9 / -	OK1JMB	- / -	3	Partial capture
08-03 00:25	80m	- / -	DO9BAU	+6 / -	12	Partial capture
08-03 00:24	80m	-3 / -12	EA1BQR	+4 / -10	2	Partial capture
08-03 00:04	80m	-10 / -16	PD0U	+17 / -	2	Partial capture
08-02 23:49	80m	-15 / -	DK4ET	- / -	2	Partial capture
08-02 23:47	80m	-8 / -	M9LRO	-1 / -18	4	✓ Closing observed
08-02 23:23	80m	-8 / -9	OK1TEP	+8 / -12	4	✓ Full exchange observed
08-02 23:12	80m	-12 / -	IZ1MKK	- / -	2	Partial capture
08-02 23:08	80m	-5 / -1	ES0MVM	-5 / -9	7	✓ Full exchange observed
08-02 23:05	80m	-4 / -	ES0MVM	- / -	2	Partial capture
08-02 22:51	80m	-8 / -15	DG3EAJ	-4 / -14	7	✓ Full exchange observed
08-02 22:26	80m	- / -	RW4HBD	-10 / -	3	Partial capture
08-02 22:23	80m	-10 / -	DH3DX	- / -	2	Partial capture
08-02 22:18	80m	- / -	R7CD	+5 / -	3	Partial capture
08-02 22:15	80m	-7 / -18	EA1ARJ	-10 / -18	6	✓ Full exchange observed
08-02 22:14	80m	- / -	DO9BAU	+7 / -	11	Partial capture
08-02 22:12	80m	-8 / -	DL6MRM	- / -11	4	✓ Closing fragment
08-02 22:11	80m	- / -	9A4ZM	+11 / -	3	Partial capture
08-02 22:10	80m	-10 / -	R2GFD	- / -7	2	✓ Closing fragment
08-02 22:07	80m	0 / -10	TM69TFR	+5 / -10	3	Partial capture
08-02 22:06	80m	- / -	RA3WY	+6 / -	3	Partial capture
08-02 22:04	80m	- / -8	DL6MRM	-2 / -	2	Partial capture
08-02 22:04	80m	+2 / -13	SP7ROH	+10 / -10	4	✓ Full exchange observed
08-02 22:00	80m	-3 / -11	M0LOW	-17 / -17	8	✓ Full exchange observed
08-02 21:54	80m	- / -17	R7GA	-24 / -	2	Partial capture
08-02 21:53	80m	- / -	RA3WY	+2 / -	3	Partial capture
08-02 21:53	80m	- / -	RW4HBD	-7 / -	2	Partial capture
08-02 21:52	80m	-6 / -14	IW2OEF	+2 / -12	3	✓ Full exchange observed
08-02 21:50	80m	-10 / -7	<...>	-4 / -	5	Partial capture
08-02 21:43	80m	-8 / -	DM8ET	-1 / -13	4	✓ Closing observed
08-02 21:40	80m	-16 / -	IK6GTF	- / -15	4	✓ Closing fragment
08-02 21:35	80m	- / -	9A4ZM	+11 / -	3	Partial capture
08-02 21:34	80m	-5 / -2	R2BNC	+4 / -2	6	✓ Full exchange observed
08-02 21:31	80m	- / -	RA3WY	-4 / -	3	Partial capture
08-02 21:29	80m	- / -	DO9BAU	+7 / -	7	Partial capture
08-02 21:27	80m	-11 / -	R2LAF/P	0 / -8	5	✓ Closing observed
08-02 21:25	80m	-10 / -9	F8IPH	-14 / -14	5	✓ Full exchange observed
08-02 21:23	80m	- / -	I1RJP	+2 / -	3	Partial capture
08-02 21:23	80m	-13 / -7	DL3RWA	-4 / -	3	Partial capture
08-02 21:20	80m	- / -	I1RJP	0 / -	2	Partial capture
08-02 21:18	80m	- / -	R9OX	-18 / -	7	Partial capture

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
033345 -11 2717  UB4FJB R2EC KO82
035415 -20 1325  RW6HPS UB4FJB LO23
035800 -12  830  UB4FJB R6TA LN13 (x2)
040130  -6 2702  UB4FJB RZ6L 73
041230 -13  635  UB4FJB RN6HK LN14
041330 -12  699  UB4FJB RZ5D KN75 (x2)

80m

UTC    dB Audio  Message
010615  +3 1059  UB4FJB 9A2LM -12
011415  -9 1643  DL2YMG UB4FJB LO23
011430  -7 1643  UB4FJB DL2YMG -12
011445  -6 1643  DL2YMG UB4FJB R-24
011800 -16 1130  SQ7OCJ UB4FJB LO23
012615 -10 2189  SP6LUT UB4FJB LO23 (x3)
014915  +3  742  OK1WE UB4FJB LO23
020245 -15 1531  OK1CI UB4FJB LO23 (x2)
020330 +10 1530  UB4FJB OK1CI -09
020345 -16 1531  OK1CI UB4FJB R-07
020400 +13 1530  UB4FJB OK1CI RR73
020415 -16 1532  OK1CI UB4FJB 73

160m

UTC    dB Audio  Message
201845  -5 1673  UB4FJB IK0HBN -11
201900  -3 1412  SP9UPH UB4FJB RR73
201915  +4 1413  UB4FJB SP9UPH 73
201915  -5 1673  UB4FJB IK0HBN JN62
201915  +3 2243  UB4FJB SQ9PBV R+09
201945  -2 1673  UB4FJB IK0HBN JN62
202145  -5 1813  UR5KC UB4FJB LO23
202200  +2 1812  UB4FJB UR5KC -09 (x2)
202245  -8 1813  UR5KC UB4FJB 73
202300  +1 1929  UB4FJB R2EA -06
202315  -9 1813  R2EA UB4FJB R-07
202330  +4 1928  UB4FJB R2EA RR73
202345  -4 1812  R2EA UB4FJB 73
202500  +3 1929  UB4FJB R2EA -16

Decoder S/N history by band

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