UB4CJS — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: European Russia Locator transmitted in a decoded message: LO31

Receiver-side FT8 activity involving UB4CJS, decoded by SO8OO in southeastern Poland. 1,104 related FT8 messages, 281 CQ messages, observed on 80m, 40m, 20m, across 63 UTC dates. Heard between 2026-05-25 and 2026-08-24.

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

1,104

Related messages

281

CQ messages

UTC dates heard

-8 dB

Mean decoder S/N

Bands

80m 20m 40m

First seen: 2026-05-25
Last seen: 2026-08-24 00:19 UTC

Frequent QSO partners observed at SO8OO

Stations UB4CJS worked most often, as logged from our receiver:

R5AV · European Russia ×3 OJ0Z · Market Reef ×3 M7JVT · England ×2 YB2CAR · Indonesia ×2 HG7JLG · Hungary ×2 EB1DJ · Spain ×2 HI3RRR · Dominican Republic ×2 UB6LLI · European Russia ×2 R95WTA · European Russia ×2 DJ0ABM · Fed. Rep. of Germany ×2 F1PBZ · France ×2 S59A · Slovenia ×2

Activity Heatmap

Locator transmitted by UB4CJS

Approximate centre of LO31, decoded 2026-08-01 02:04 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	UB4CJS S/N	Counterpart	Counterpart S/N	Msgs	Capture
08-24 02:32	40m	-16 / -	LA3RLA	- / -9	5	Partial capture
08-24 02:25	40m	-8 / -	HI3RRR	- / -22	10	✓ Closing fragment
08-24 02:24	40m	-2 / -	SN40KZE	- / -9	2	Partial capture
08-24 02:20	40m	-5 / -	XQ3MCC	- / -15	7	✓ Closing fragment
08-24 02:14	40m	-4 / -	UA2FFD	- / -17	6	Partial capture
08-24 02:08	40m	-4 / -	LU3CQ	- / -19	12	Partial capture
08-24 02:02	40m	-8 / -13	KP2B	-18 / -14	6	✓ Full exchange observed
08-24 02:01	40m	-6 / -	XQ3MCC	-16 / -14	3	✓ Closing observed
08-24 01:53	40m	-2 / -	HI3RRR	- / -18	11	Partial capture
08-23 17:10	40m	-12 / -	ZA/IK3BNO	- / -16	11	Partial capture
08-23 17:09	40m	-12 / -	ZL1RPC/P	- / -13	2	Partial capture
08-23 17:05	40m	-8 / -	SO5A	- / -10	6	Partial capture
08-23 16:56	40m	-7 / -	YB2CLC	- / -12	3	Partial capture
08-23 16:53	40m	-10 / -	YB2CLC	- / -10	2	Partial capture
08-23 16:49	40m	-18 / -9	HG7JLG	+5 / -18	4	✓ Full exchange observed
08-23 16:47	40m	-21 / -	UB4HPQ	- / -15	2	✓ Closing fragment
08-23 16:44	40m	-18 / -	YB7HBD	- / -16	6	Partial capture
08-23 16:42	40m	-15 / -	RW9WT	- / -3	3	Partial capture
08-23 16:42	40m	- / -	DL9ATW	-1 / -	4	Partial capture
08-23 16:41	40m	-19 / -8	UA3WG	-8 / -3	5	✓ Full exchange observed
08-23 16:27	40m	-16 / -	R3RM	- / +1	17	Partial capture
08-23 16:24	40m	-18 / -	UA9FMT	- / -1	2	✓ Closing fragment
08-23 16:06	40m	-21 / 0	UC6D	+4 / -1	4	✓ Full exchange observed
08-23 16:03	40m	-20 / -	IZ2CPO/QRP	- / -4	2	Partial capture
08-23 16:02	40m	-12 / -	RV3DCM/1	- / -4	2	Partial capture
08-23 15:59	40m	-10 / -	DL750RTG	- / -4	6	Partial capture
08-23 15:54	40m	-9 / -	RA4LAG	- / -7	9	✓ Closing fragment
08-23 15:49	40m	-13 / -4	R7KM	+6 / -9	3	Partial capture
08-23 15:49	40m	-14 / -	DL750RTG	- / -19	3	Partial capture
08-23 15:43	40m	-13 / -	BG2GWN	- / -19	4	Partial capture
08-23 13:56	20m	-18 / -9	DL1KO	-18 / -9	3	✓ Full exchange observed
08-23 13:44	20m	-4 / -	HL5BMX	- / -16	3	Partial capture
08-23 13:42	20m	-2 / -18	YT1DDL	+5 / -13	5	✓ Full exchange observed
08-23 13:02	20m	-14 / -	PE1BTV	- / -11	3	✓ Closing fragment
08-23 13:01	20m	-11 / -	DG5PI	- / -11	2	Partial capture
08-23 12:50	20m	- / -	DG5PI	-10 / -	4	Partial capture
08-23 12:50	20m	-15 / -24	DB1EF	-9 / -9	6	✓ Full exchange observed
08-23 12:50	20m	- / -14	ON1JP	-5 / -	6	Partial capture
08-23 12:28	20m	-6 / -	JE6HOG	- / -19	13	Partial capture
08-23 12:04	20m	-6 / -	YF1CAD	- / -20	16	Partial capture
08-23 11:52	20m	-10 / -	LZ1EV	- / -20	20	Partial capture
08-23 11:47	20m	-14 / -	LZ1EV	- / -10	3	Partial capture
08-23 11:37	20m	-13 / -	BH2WTV	- / -18	11	Partial capture
08-23 11:34	20m	-11 / -	R9OX	- / -20	6	Partial capture
08-23 09:41	20m	-4 / -	OS9T	- / -13	5	Partial capture
08-23 09:38	20m	-6 / -	OS9T	- / -13	2	Partial capture
08-23 09:23	20m	-5 / -5	PD2WL	+9 / -5	6	✓ Full exchange observed
08-23 09:15	20m	-5 / -	LY5G	- / -11	12	Partial capture
08-23 06:15	20m	-3 / -	SQ8MA	- / -2	4	Partial capture
08-23 06:09	20m	-2 / -	IK4LZH	- / -8	2	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
022530 -12  490  HI3RRR UB4CJS -22 (x10)
023200 -10  489  LA3RLA UB4CJS -09 (x5)

20m

UTC    dB Audio  Message
132015 -16  742  BH2WTV UB4CJS -10
132715  -8  742  BD8CUC UB4CJS RR73
133215  -9  742  BA3NZ UB4CJS RR73
133845 -14  743  BG9KBK UB4CJS -16
134200  +4  742  UB4CJS YT1DDL KN04
134215  -1  742  YT1DDL UB4CJS -13
134230  +8  742  UB4CJS YT1DDL R-18
134245  -2  742  YT1DDL UB4CJS RR73
134300  +3  742  UB4CJS YT1DDL 73
134415  -8  812  HL5BMX UB4CJS -16 (x3)
135630 -21 1869  UB4CJS DL1KO -09
135645 -18  813  DL1KO UB4CJS R-09
135730 -15 1869  UB4CJS DL1KO RR73

80m

UTC    dB Audio  Message
015545 -22 1355  R3UG UB4CJS -16
015615 -15 1355  CQ UB4CJS LO31                        a1 (x14)

Decoder S/N history by band

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