UB8CSJ — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Asiatic Russia Locator transmitted in a decoded message: MO07

Receiver-side FT8 activity involving UB8CSJ, decoded by SO8OO in southeastern Poland. 1,242 related FT8 messages, 296 CQ messages, observed on 80m, 40m, 20m, 10m, across 47 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

1,242

Related messages

296

CQ messages

UTC dates heard

-7 dB

Mean decoder S/N

Bands

80m 20m 40m 10m

First seen: 2026-05-24
Last seen: 2026-08-22 01:53 UTC

Frequent QSO partners observed at SO8OO

Stations UB8CSJ worked most often, as logged from our receiver:

RZ4M · European Russia ×2 RZ4FWA · European Russia ×2 SV5BYP · Dodecanese ×2 M1DBW · England ×2 RZ6ALZ · European Russia ×2 M0BEW · England ×2 YO6LM · Romania ×2 IZ5UFW · Italy ×2 UN8DSW · Kazakhstan ×2 IW1QQG · Italy RU4B · European Russia UI5A · European Russia

Activity Heatmap

Locator transmitted by UB8CSJ

Approximate centre of MO07, decoded 2026-08-22 03:43 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	UB8CSJ S/N	Counterpart	Counterpart S/N	Msgs	Capture
08-22 03:30	20m	- / -	RK9UN	0 / -	2	✓ Closing fragment
08-22 03:28	20m	- / -23	ON3KJU	0 / -	3	Partial capture
08-22 02:50	20m	-20 / -	EC3A	- / -	2	Partial capture
08-22 02:33	20m	- / -10	HI8J	-8 / -	2	✓ Closing fragment
08-22 02:28	20m	- / -17	TA1BJ	-13 / -	2	Partial capture
08-22 00:32	20m	- / -12	9K2MP	+4 / -	3	✓ Closing fragment
08-21 21:51	20m	- / -8	9K2GR	+6 / -	2	✓ Closing fragment
08-21 04:01	20m	-13 / -	NE5TX	- / -15	5	✓ Closing fragment
08-21 03:43	20m	-8 / -	KE4EB	- / -	2	Partial capture
08-20 04:34	20m	-18 / -	NI9D	- / -	2	Partial capture
08-20 04:11	20m	-18 / -	KD4SN	- / -	5	Partial capture
08-20 04:08	20m	-17 / -	N07EZJ/R	- / -	2	Partial capture
08-20 04:02	20m	-19 / -	KD4SN	- / -	3	Partial capture
08-20 03:51	20m	-12 / -	K2PSD	- / -	3	Partial capture
08-20 03:41	20m	-11 / -	W4EIS	- / -	7	Partial capture
08-20 03:30	20m	-10 / -	XE2V	- / -	4	Partial capture
08-19 11:11	20m	- / -24	PD7EB	-2 / -	6	✓ Closing fragment
08-19 10:36	20m	- / -24	5P5Z	-18 / -	2	Partial capture
08-19 10:25	20m	- / -3	R3PLA	-11 / -	3	✓ Closing fragment
08-19 09:38	20m	- / -16	DL6MRM	-7 / -	3	Partial capture
08-19 09:26	20m	- / -22	9A2RD	+10 / -	4	✓ Closing fragment
08-18 14:58	20m	- / -9	RU4B	-2 / -	2	✓ Closing fragment
08-17 22:17	20m	- / -12	DK7ZT	-14 / -	3	Partial capture
08-17 22:00	20m	- / -20	YO4ATW	-15 / -	2	Partial capture
08-17 21:54	20m	- / -13	R5FY	-12 / -	2	✓ Closing fragment
08-17 20:35	20m	- / -15	E75C	-5 / -	4	✓ Closing fragment
08-17 19:03	20m	- / -17	R2FAQ	-8 / -	3	Partial capture
08-17 18:51	20m	- / -2	GX0NHR	-8 / -	2	✓ Closing fragment
08-17 18:45	20m	- / -14	IU1CIW	+24 / -	2	✓ Closing fragment
08-17 18:41	20m	- / -9	IU1CIW	+23 / -	3	Partial capture
08-17 18:37	20m	- / -16	M7EOI	-20 / -	2	Partial capture
08-17 18:18	20m	- / -15	EA1A	+7 / -	4	✓ Closing fragment
08-17 17:16	20m	- / -8	DL3FH	-15 / -	4	✓ Closing fragment
08-17 16:43	20m	- / -14	R4UR	-12 / -	2	✓ Closing fragment
08-17 16:16	20m	- / -	F5HNQ	-4 / -	2	Partial capture
08-17 15:43	20m	- / -10	MM0TBH	-9 / -	3	Partial capture
08-16 18:18	20m	- / -13	S58WW	-14 / -	2	✓ Closing fragment
08-16 18:00	20m	- / 0	UA6HRB	-4 / -	2	✓ Closing fragment
08-16 17:53	20m	- / -11	5P5Z	0 / -	2	Partial capture
08-16 17:50	20m	- / -	OE9GWV	-13 / -	5	Partial capture
08-16 17:41	20m	- / -12	DL1R	-4 / -	3	✓ Closing fragment
08-16 17:27	20m	- / -22	IU1DXU	-16 / -	3	Partial capture
08-16 17:20	20m	- / -22	IU1DXU	-14 / -	6	Partial capture
08-16 17:16	20m	- / -22	IU1DXU	-15 / -	3	Partial capture
08-12 18:28	20m	- / -8	GM3AND	-14 / -	2	✓ Closing fragment
08-12 18:22	20m	- / -18	YO4LUP	-12 / -	2	✓ Closing fragment
08-12 17:40	20m	- / -12	IZ2EID	-8 / -	2	Partial capture
08-12 17:36	20m	- / -18	R3BIS	-10 / -	2	Partial capture
08-12 17:24	20m	- / -13	UA4PBT	0 / -	3	✓ Closing fragment
08-12 17:05	20m	- / -	UB4HVA	-13 / -	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
022830 -14 1773  UB8CSJ TA1BJ -17 (x2)
023330  -9 2463  UB8CSJ HI8J -10 (x2)
024915 -18 2067  <...> UB8CSJ MO07
025015 -19 2067  EC3A UB8CSJ MO07 (x2)
032000 -18 2302  A71YY UB8CSJ MO07
032815  +1 1142  UB8CSJ ON3KJU -23 (x3)
033045  +0 1160  UB8CSJ RK9UN +17 (x2)
034330 -16 2301  A71YY UB8CSJ MO07
035315 -18 2302  UB8CSJ R0SAU RR73

40m

UTC    dB Audio  Message
212245  +2 1185  UB8CSJ YO8PS KN37
212315  +0 2016  UB8CSJ DL7ACA JO40
212315  -1 1185  UB8CSJ YO8PS KN37 (x3)
213115 -21 2181  UB8CSJ F1HFP -16
214845  -5  402  UB8CSJ F6HRP RR73
221245 -15 2017  UB8CSJ OM1AKD -16 (x3)
223415 -23 1830  UB8CSJ OS4K -17
224615  -5 2489  UB8CSJ F1PBZ -14 (x2)
002115  -4 2952  UB8CSJ DM2AB -23
002215 -19 2304  UB8CSJ RZ6ALZ RR73

10m

UTC    dB Audio  Message
103430  -2 2460  UB8CSJ DL8WEM JN48 (x2)
104200 -13 2466  UB8CSJ DK4RH JO31
104300  -9 2466  UB8CSJ DL8WEM JN48
115330  +6 1455  UB8CSJ IK3CHK JN55 (x4)
122345  -9 2607  UB8CSJ UA3DPM R+01
123445  -9 2541  UB8CSJ RA3FH KO84 (x3)
124715 -15 2381  UB8CSJ R3KFT -02 (x2)
174530  -9 1968  UB8CSJ YU0X -13

80m

UTC    dB Audio  Message
200115  +3 1422  UB8CSJ R3AT -13
200115  +3 1025  UB8CSJ RA3LBW 73
200145  -5 1422  UB8CSJ R3AT RR73
200245  -6 1479  UB8CSJ UI5A R-12 (x2)
200415 -13  405  UB8CSJ UB0SMX/P OO16 (x4)
200645 +16  915  UB8CSJ SQ4FDK KO14 (x2)
200745  +8 2814  UB8CSJ R3HH KO95
200745 +12  914  UB8CSJ SQ4FDK 73
200815  +9 2814  UB8CSJ R3HH R-07 (x2)

Decoder S/N history by band

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