UB5MBA — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: European Russia Locator transmitted in a decoded message: KO97

Receiver-side FT8 activity involving UB5MBA, decoded by SO8OO in southeastern Poland. 404 related FT8 messages, 21 CQ messages, observed on 160m, 80m, 40m, 20m, 10m, across 56 UTC dates. Heard between 2026-05-24 and 2026-08-20.

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

404

Related messages

CQ messages

UTC dates heard

-5 dB

Mean decoder S/N

Bands

80m 20m 40m 10m 160m

First seen: 2026-05-24
Last seen: 2026-08-20 17:35 UTC

Frequent QSO partners observed at SO8OO

Stations UB5MBA worked most often, as logged from our receiver:

R9CS/P · European Russia ×3 DO5OT · Fed. Rep. of Germany ×2 RZ3ZY · European Russia ×2 R6OP · European Russia ×2 RG2T · European Russia ×2 R5AV · European Russia ×2 RN6MA · European Russia ×2 DB6LL/P · Fed. Rep. of Germany ×2 R6ZEJ · European Russia ×2 F1ODM · France RA4CA · European Russia RI0SP · European Russia

Activity Heatmap

Locator transmitted by UB5MBA

Approximate centre of KO97, decoded 2026-08-20 19:35 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	UB5MBA S/N	Counterpart	Counterpart S/N	Msgs	Capture
08-20 19:34	80m	-18 / -	R3ZMM	-1 / +6	5	✓ Closing observed
08-20 19:22	40m	-2 / -	<...>	- / -16	3	Partial capture
08-19 19:38	80m	-6 / -	<...>	- / -12	3	Partial capture
08-16 20:03	80m	-13 / -	RX3DPK/LH	- / -	2	Partial capture
08-16 20:00	80m	-7 / -	DK0RA/LH	- / +1	2	Partial capture
08-16 19:56	80m	-14 / -12	DK0RA/LH	+8 / -11	4	Partial capture
08-16 19:55	80m	-16 / -	<...>	- / -	2	Partial capture
08-15 06:42	20m	- / -8	5B4AMX	-12 / -	2	Partial capture
08-14 23:36	80m	- / -	DO8JB	-7 / -	12	Partial capture
08-13 19:46	80m	-13 / -	RM5F	+2 / +6	3	✓ Closing observed
08-13 19:43	80m	-9 / +10	RU3NCW	0 / +9	5	✓ Full exchange observed
08-13 19:38	160m	- / +1	R5BS	-1 / -	2	✓ Closing fragment
08-13 19:35	160m	- / -12	RU3DBT	-19 / -	4	✓ Closing fragment
08-13 17:20	80m	- / -12	R6JC	-8 / -	3	Partial capture
08-12 19:49	80m	- / -13	PA4PA	-2 / -	2	✓ Closing fragment
08-12 19:45	80m	-15 / -	RV3SBS/P	- / -10	3	✓ Closing fragment
08-12 17:03	20m	- / -3	UA1OJL	-12 / -	2	✓ Closing fragment
08-09 15:57	40m	- / -11	SQ9M	-15 / -	3	✓ Closing fragment
08-09 12:21	20m	- / -19	IK6GPZ	-17 / -	2	Partial capture
08-09 07:02	20m	- / -11	UB6LTL	-18 / -	2	Partial capture
08-08 15:37	20m	+2 / -	<...>	- / -8	3	Partial capture
08-08 14:17	20m	0 / -	RW0UM	- / -	2	Partial capture
08-08 14:15	20m	-4 / -	IZ8LLG/P	- / -	2	Partial capture
08-07 19:37	80m	- / -15	OK1FRG	+10 / -	2	Partial capture
08-07 19:35	80m	-16 / -3	ES0MVM	-12 / -11	5	✓ Full exchange observed
08-07 18:36	80m	-11 / -7	<...>	-5 / -11	2	Partial capture
08-07 18:35	80m	- / -	UB6OAK	-15 / -	5	Partial capture
08-07 18:30	80m	-14 / -	<...>	- / -	4	Partial capture
08-07 18:28	80m	-13 / -	RK3DWA/3	- / -	2	Partial capture
08-07 18:25	80m	-12 / -	RK3DWA/3	- / -	2	Partial capture
08-07 18:16	80m	-9 / -	RK3DWA/3	- / +2	8	Partial capture
08-07 11:12	20m	-13 / -	R8OAE	- / -15	3	Partial capture
07-31 18:58	80m	0 / -8	UB3ADO/P	-3 / -6	7	✓ Full exchange observed
07-31 16:44	20m	-14 / -2	R6DJR	-20 / -12	4	✓ Full exchange observed
07-31 09:45	20m	-5 / -	PD0FF	+4 / -20	3	✓ Closing observed
07-30 20:14	160m	- / -	IK0HBN	-5 / -	2	Partial capture
07-30 20:01	160m	- / -16	RA3LCI	-16 / -	2	Partial capture
07-30 19:54	160m	- / -	IK0HBN	+1 / -	6	Partial capture
07-30 19:05	80m	- / -	RA1QCX	-8 / -	3	Partial capture
07-30 18:58	80m	- / -12	S59A	+5 / -	2	Partial capture
07-30 18:54	80m	-11 / -	R2LAF/P	+4 / -	6	✓ Closing observed
07-30 18:52	80m	-3 / -13	R9CS/P	+14 / -4	6	✓ Full exchange observed
07-30 08:05	20m	- / -	OE3EHS	+11 / -	13	Partial capture
07-30 08:05	20m	- / -	PD3PAM	-18 / -	2	Partial capture
07-30 08:01	20m	- / -16	PD3LKN	-10 / -	3	✓ Closing fragment
07-28 00:38	20m	- / -14	W1AW/4	-13 / -	3	Partial capture
07-27 19:43	40m	- / -11	RC3D	+2 / -	2	✓ Closing fragment
07-27 19:35	40m	-6 / -4	RG2T	-21 / -	3	✓ Closing observed
07-27 19:33	40m	- / -16	RA6ATZ	-12 / -	3	Partial capture
07-27 19:32	40m	- / -6	R5AV	+5 / -	2	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

80m

UTC    dB Audio  Message
195730 -15  336  DK0RA/LH UB5MBA R-11 (x3)
200300 -14 2289  RX3DPK/LH UB5MBA KO97 (x2)
193845  -6 3004  <...> UB5MBA KO97 (x2)
193930  -6 2830  UB5MBA R3DFE/M +00
193945  -7 3003  <...> UB5MBA R-12
194000  -6 2830  UB5MBA RR73; UA1OJL <...> +00
193430 -14 2085  R3ZMM UB5MBA KO97 (x3)
193545  -1 1308  UB5MBA R3ZMM RR73
193600 -17 2085  R3ZMM UB5MBA 73

40m

UTC    dB Audio  Message
193345 -15 1964  UB5MBA RA6ATZ KN96 (x2)
193545 -19 1663  UB5MBA RG2T -04 (x2)
193630  -6 2822  RG2T UB5MBA 73
194345  -1 2744  UB5MBA RC3D -11 (x2)
155700 -15 1802  UB5MBA SQ9M -11 (x3)
175215 -11 1014  UB5MBA R6HD RR73
175700 -14  838  UB5MBA R2AZM -13
192245  -2 2920  <...> UB5MBA KO97 (x3)

160m

UTC    dB Audio  Message
195515  -2  572  UB5MBA IK0HBN JN62 (x4)
200100 -16 2091  UB5MBA RA3LCI -16 (x2)
201430  -4 2419  UB5MBA IK0HBN JN62 (x2)
193515 -18 1728  UB5MBA RU3DBT -12 (x4)
193845  -4 2410  UB5MBA R5BS +01 (x2)
203945 -19 2352  UB5MBA R2EA/P RR73

20m

UTC    dB Audio  Message
153815  +1 2962  <...> UB5MBA R-08
153830  -4 2741  UB5MBA RR73; DL5MK <...> -16
070245 -18 2342  UB5MBA UB6LTL -11 (x2)
103145 -13  824  UB5MBA RA9J -15
122100 -16 1439  UB5MBA IK6GPZ JN62 (x2)
170345 -12  642  UB5MBA UA1OJL -03 (x2)
064230 -13 1779  UB5MBA 5B4AMX -08 (x2)
095445 -19 1008  GB0CSL UB5MBA KO97
095800  -9 2898  DA0LH UB5MBA KO97
170800 -14  959  UB5MBA RC6OG RR73
165345 -13  561  RA4FKZ UB5MBA KO97

10m

UTC    dB Audio  Message
081415  +0 1128  UB5MBA DL3MIB JN57 (x3)
152100  -4  635  UB5MBA RN6MA +00 (x2)
114830 -20 1248  UB5MBA R2EA RR73
070115  +2 2808  UB5MBA RZ6L -14 (x3)
070715 -19 1693  UB5MBA UA6XY -04 (x2)
162315 -21 1109  R9AE UB5MBA KO97
174815  -8 2682  UB5MBA RV6AJJ -13
081100  -4 2289  UB5MBA R50RKZ -21
082915 -17 1003  UB5MBA RC6ZU RR73

Decoder S/N history by band

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