UA4A — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: European Russia Locator transmitted in a decoded message: LN28

Receiver-side FT8 activity involving UA4A, decoded by SO8OO in southeastern Poland. 108 related FT8 messages, 4 CQ messages, observed on 40m, 20m, 10m, across 15 UTC dates. Heard between 2026-05-28 and 2026-08-23.

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

108

Related messages

CQ messages

UTC dates heard

-10 dB

Mean decoder S/N

Bands

20m 40m 10m

First seen: 2026-05-28
Last seen: 2026-08-23 05:25 UTC

Frequent QSO partners observed at SO8OO

Stations UA4A worked most often, as logged from our receiver:

OH2ZZ · Finland ×2 RA9LL · Asiatic Russia ×2 BD3MN · China LZ1JZ · Bulgaria 4Z5PT · Israel IQ0RU · Italy DK3BK · Fed. Rep. of Germany UA3ZMQ · European Russia LZ2TS · Bulgaria JY5IB · Jordan SP5LST · Poland HA9OA · Hungary

Activity Heatmap

Locator transmitted by UA4A

Approximate centre of LN28, decoded 2026-08-23 07:20 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	UA4A S/N	Counterpart	Counterpart S/N	Msgs	Capture
08-23 07:24	20m	-7 / -12	S55A	-13 / -11	2	Partial capture
08-23 07:20	20m	-8 / -	OH2ZZ	- / -15	3	✓ Closing fragment
08-23 07:16	20m	+3 / -11	<...>	0 / -	3	Partial capture
08-23 07:11	20m	-12 / -7	F1ODM	+16 / -17	6	Partial capture
08-22 08:21	20m	-19 / -16	LZ2CP	-8 / -	3	Partial capture
08-22 07:48	20m	-10 / -	OH8MXJ	- / -	2	✓ Closing fragment
08-22 07:41	20m	-5 / -	4Z5PT	- / -16	2	✓ Closing fragment
08-22 07:39	20m	-2 / -	UN0GY	-13 / -	2	✓ Closing observed
08-18 08:53	10m	- / +8	R3KLE	0 / -	2	✓ Closing fragment
08-18 08:50	10m	- / -25	<...>	-2 / -	4	Partial capture
08-18 08:35	10m	- / 0	F5ADE	-16 / -	2	Partial capture
08-14 09:11	20m	-7 / -	DM2RM	- / -16	3	✓ Closing fragment
08-14 09:09	20m	- / -	F1PSX	-22 / -	4	Partial capture
08-14 09:09	20m	-20 / -	UT3SO	- / -	2	Partial capture
08-14 08:57	20m	-20 / -	HA1BF	- / -14	2	Partial capture
08-14 08:55	20m	-18 / -18	R50RKZ	-12 / -7	2	Partial capture
08-14 08:38	20m	-21 / -	DL0WIM	- / -19	2	✓ Closing fragment
08-14 08:14	20m	-18 / -7	RU1QD	-20 / -	3	Partial capture
08-12 09:56	10m	- / -	EA3AKY	-18 / -	2	✓ Closing fragment
08-12 09:34	10m	- / -	R7DX	-10 / -	2	✓ Closing fragment
08-12 09:33	10m	- / -6	LZ2TS	-16 / -	2	✓ Closing fragment
08-09 15:34	20m	- / -4	HA7EC	-22 / -	2	✓ Closing fragment
08-09 15:21	20m	- / -12	UA4HBJ	-17 / -	3	✓ Closing fragment
08-09 15:08	20m	- / -7	RA4L	-20 / -	2	✓ Closing fragment
08-09 12:48	20m	- / -6	DK3BK	-8 / -	2	✓ Closing fragment
08-05 14:00	20m	- / -	RA0SCZ	-12 / -	3	Partial capture
08-02 16:22	40m	- / -	9A4ZM	-8 / -	3	Partial capture
07-29 06:01	20m	- / -11	R6DZR	-3 / -	2	Partial capture
07-29 05:58	20m	-12 / -	RQ7R	- / -9	2	✓ Closing fragment
07-29 05:56	20m	-14 / -	<...>	- / +9	2	Partial capture
07-29 05:54	20m	-20 / -	OH2XO	- / 0	2	Partial capture
07-29 05:47	20m	- / 0	RK4CH	-8 / -	2	✓ Closing fragment
07-29 05:36	20m	- / -10	R5FY	-17 / -	2	Partial capture
07-29 05:32	20m	-11 / -3	OH5VT	-6 / -	3	Partial capture
07-28 17:37	20m	-12 / -	SQ8AQN	- / -14	2	✓ Closing fragment
07-28 17:35	20m	-16 / +1	F5SFT	-19 / -20	5	✓ Full exchange observed
07-28 17:33	20m	-14 / -	YO4GIY	- / -5	3	✓ Closing fragment
07-28 17:30	20m	-11 / -	YO4NF	- / 0	4	✓ Closing fragment
07-28 17:22	20m	-15 / -	PD2XX	- / -18	3	✓ Closing fragment
07-28 17:12	20m	-5 / -	HA9OA	- / -11	2	✓ Closing fragment
07-28 17:03	20m	-14 / -	YO4LUP	- / -8	2	✓ Closing fragment
07-28 17:01	20m	+2 / -	DF0KK	- / -18	3	✓ Closing fragment
07-28 16:57	20m	-18 / -	DS5USH	- / -14	3	✓ Closing fragment
07-28 16:49	20m	-18 / -	SQ5HUZ	- / -14	2	Partial capture
07-28 14:20	20m	-10 / -	SQ2JSE	- / -	2	Partial capture
07-28 14:16	20m	-14 / -	SP8DK	- / +3	2	✓ Closing fragment
07-28 14:06	20m	- / -	RA0SCZ	-10 / -	6	Partial capture
07-28 14:02	20m	-15 / -	RW9MZ	- / -15	3	✓ Closing fragment
07-28 14:00	20m	-14 / -	RA0S	- / -	2	Partial capture
07-28 13:57	20m	-14 / -	SP5LST	- / -12	3	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

20m

UTC    dB Audio  Message
071215 +21 2805  UA4A F1ODM -07 (x2)
071300 -11 1556  UR5WCS UA4A LN28
071315 +16 2805  UA4A F1ODM -07 (x2)
071400 -12 1555  F1ODM UA4A R-17
071615  +3 2937  <...> UA4A
071700  -3 2938  UA4A <...> -11 (x2)
071800 -11 1620  RA3Y UA4A LN28
072030  -7 1912  OH2ZZ UA4A LN28 (x3)
072430  -7 1909  S55A UA4A -11
072515 -13 1011  UA4A S55A R-12

10m

UTC    dB Audio  Message
093545 -11 1968  UA4A R7DX 73
095600 -20 2106  UA4A EA3AKY RR73 (x2)
083330 -23 1433  UA4A R3KMI +09
083500 -15 2170  UA4A F5ADE +00 (x2)
083715  -6 2455  UA4A 5P1KZX -08
084200 -22 2018  S51DD UA4A LN28
085030  -5 2835  UA4A <...> -25 (x4)
085315  +0 2559  UA4A R3KLE +08 (x2)
085415 -23 1896  UA4A F4FSY JN25

40m

UTC    dB Audio  Message
162215  -5  248  UA4A 9A4ZM JN86 (x3)

Decoder S/N history by band

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