UA3YAJ — reception at SO8OO

Signals decoded by SO8OO in southeastern Poland. FT8 and CW have separate histories; all times are UTC.

FT8 activity

DXCC entity inferred from callsign: European Russia Most frequent locator attributed to this token: KO72

Receiver-side FT8 activity involving UA3YAJ, decoded by SO8OO in southeastern Poland. 396 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, 10m, across 68 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-11-05.

These are automated observations at the SO8OO receiver, not an official contact log. Times are UTC. Attribution follows decoded FT8 message structure: CQ uses the first token and directed-looking messages use the second. Free text that resembles a directed message can be attributed imperfectly. Summary S/N reflects propagation plus SO8OO receiver, antenna and local-noise conditions. Counts are not adjusted for monitoring outages; transmissions that were not decoded are absent. Inferred entity and location data may be inaccurate for portable, remote or special-event operation.

SO8OO decoded 396 FT8 messages attributed to UA3YAJ as the transmitting token by decoded message structure across 68 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (48%), followed by 20 m (39%) and 40 m (11%). Most decodes (56%) fell within the six-hour window 14:00-20:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -14 dB.

Overview

396

Messages attributed

UTC dates decoded

117

Active 15-min windows

-14 dB

Estimated median S/N

Bands

80m · 191 40m · 44 20m · 156 10m · 5

First attributed message: 2026-06-06
Last attributed message: 2026-11-05 14:26 UTC

Observed FT8 message patterns

Attributed sample: 396 messages
Active dates: 68 UTC dates
Estimated median S/N: -14 dB
Estimated 10th-90th percentile: -20 to -1 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 168, moderate (-15 to -9 dB) 95, strong (≥ -8 dB) 133.

WSJT-X defines S/N reports against a 2,500 Hz reference noise bandwidth. The ranges above are SO8OO receiver-side display categories, not official WSJT-X classes, transmitter-power measurements or estimates of how easy the station is to hear elsewhere. Statistics include only successful decodes on SO8OO's monitored FT8 channels; transmissions that were not decoded are absent.

Frequent counterpart tokens observed at SO8OO

Tokens most often paired with UA3YAJ in decoded directed-looking exchanges:

F1PSX · France R8CBB · Asiatic Russia RA7E/P · European Russia UK8FCM · Uzbekistan R2EA/P · European Russia R2EC · European Russia R6FGF · European Russia RA3BY · European Russia RA4ADF/P · European Russia RT4A/P · European Russia SQ3MQD · Poland UA3ZMQ · European Russia

Attributed messages by UTC hour

Rolling 90-day UTC chart window. Counts follow decoded message structure: the first token for CQ, or the second token in a directed-looking message.

Most frequent locator attributed to UA3YAJ

The map compares the centres and boundaries of the locator field attributed to this token by decoded message structure, 2° × 1° as a Maidenhead square, and SO8OO's six-character receiver square. The separation is not an exact antenna-to-antenna distance or a radio-path length.

Attributed locator: KO72 · 215 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 961 km (approx.)
Last such locator decoded: 2026-11-05 14:24 UTC

A decoded locator can describe portable, remote or special-event operation and is not proof of a permanent station address or transmitter identity.

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	UA3YAJ S/N	Counterpart	Counterpart S/N	Msgs	Capture
11-05 14:25	80m	-10 / -	R9FF	- / -11	2	✓ Closing fragment
11-04 13:35	80m	-16 / -	UN7CBY	- / -15	3	Partial capture
11-04 13:33	80m	-18 / -13	RX6CC	-16 / -5	5	✓ Full exchange observed
11-03 14:29	80m	-21 / -	TC3CT	- / -	2	Partial capture
11-03 14:26	80m	-13 / -	EU6KA	-15 / -9	2	✓ Closing observed
11-01 06:12	40m	- / -	F1PSX	-18 / -	2	Partial capture
11-01 06:11	40m	-20 / -	UA3ZMQ	- / -	2	✓ Closing fragment
11-01 06:08	40m	- / -	F1IQH	-15 / -	3	Partial capture
11-01 06:07	40m	- / -11	ON1DGN	-12 / -	4	Partial capture
10-28 16:14	80m	-8 / -	R3CE	- / -17	2	✓ Closing fragment
10-28 16:11	80m	-4 / -	RZ3DZ	- / -16	2	✓ Closing fragment
10-28 16:10	80m	-4 / -	RZ4M	-24 / -8	3	✓ Closing observed
10-23 06:29	40m	-20 / -	R2EA/P	- / +2	2	✓ Closing fragment
10-18 06:03	40m	-19 / -	RA4ADF/P	- / -13	3	✓ Closing fragment
10-15 16:59	80m	-4 / -12	R1IV	-13 / -	4	Partial capture
10-13 17:39	80m	- / -11	DL5MO	-9 / -	3	Partial capture
10-13 17:38	80m	-2 / -	R7ZY	- / 0	3	✓ Closing fragment
10-12 06:19	40m	- / -	US1EA	-17 / -	3	✓ Closing fragment
10-12 06:18	40m	- / -3	RK2Z	-10 / -	2	Partial capture
10-11 16:53	40m	-18 / -	R6FGF	- / -10	2	✓ Closing fragment
10-11 16:52	40m	- / -	R8CKD	-12 / -	2	Partial capture
10-11 16:51	40m	-13 / -8	UB6OAJ	-8 / -12	4	✓ Full exchange observed
10-10 17:41	40m	- / -5	DK8HC/P	-4 / -	4	Partial capture
10-10 17:41	40m	- / -	EA3HMM	+8 / -	4	Partial capture
10-10 17:37	80m	- / -	DO7TTR	-9 / -	5	Partial capture
10-10 17:36	80m	- / -	DO3ANK	-3 / -	5	Partial capture
10-10 17:35	80m	-10 / -	EU1AFX	+16 / +1	4	✓ Full exchange observed
10-10 17:31	80m	-5 / -	DB100FT	- / -	2	Partial capture
10-09 16:18	80m	-14 / -	UA6EU	- / -14	2	✓ Closing fragment
10-07 16:44	80m	-2 / -	UA3FH	- / -15	2	✓ Closing fragment
10-07 16:44	80m	-2 / -13	UA1ABJ	-17 / -19	5	Partial capture
09-27 04:22	80m	-16 / +5	R3YK	+3 / -18	5	✓ Full exchange observed
09-27 04:22	80m	- / -3	RO3ZR	-6 / -	3	✓ Closing fragment
09-26 17:42	80m	- / -11	RU6K	+6 / -	5	✓ Closing fragment
09-26 06:26	40m	- / -13	SQ3MQD	-5 / -	4	✓ Closing fragment
09-26 05:54	40m	- / -	F4FLF	-16 / -	3	Partial capture
09-20 17:38	80m	- / -	DL6UM	-12 / -	5	Partial capture
09-20 17:38	80m	- / -	DO7DE	-3 / -	2	Partial capture
09-19 17:28	80m	-16 / -	R2EN	- / -12	2	✓ Closing fragment
09-16 17:24	80m	-8 / -	R2DRE	- / -14	2	✓ Closing fragment
09-16 17:23	80m	-6 / -	R3YAR	- / +3	2	✓ Closing fragment
09-16 17:21	80m	-5 / -3	DG1VL	+3 / -16	6	✓ Full exchange observed
09-16 17:21	80m	0 / -	R3KLE	- / -8	2	✓ Closing fragment
09-15 16:55	80m	-2 / -	R4FDK	-16 / -15	4	✓ Closing observed
09-14 18:08	80m	-2 / -	R9OOF	- / -16	4	✓ Closing fragment
09-14 18:04	80m	-9 / -5	RA1TR	+4 / -	3	✓ Closing observed
09-14 18:04	80m	- / -8	UA3GX	-12 / -	3	✓ Closing fragment
09-14 18:03	80m	-12 / +2	RA6LTD	-6 / -	2	✓ Closing observed
09-14 18:02	80m	- / -10	R2YW	0 / -	2	Partial capture
09-12 16:55	80m	-6 / -2	R5BM/M	-3 / -	4	Partial capture

Recent FT8 messages decoded at SO8OO

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

80m

UTC    dB Audio  Message
133230 -22 1899  CQ UA3YAJ KO72 (x3)
133345 -16 1207  UA3YAJ RX6CC KN96
133400 -17 1898  RX6CC UA3YAJ -05
133415 -17 1207  UA3YAJ RX6CC R-13
133430 -18 1898  RX6CC UA3YAJ RR73
133445 -14 1207  UA3YAJ RX6CC 73
133500 -17 1898  UN7CBY UA3YAJ R-15 (x3)
142330 -12 1501  CQ UA3YAJ KO72 (x2)
142530  -9 1501  R9FF UA3YAJ -11 (x2)

40m

UTC    dB Audio  Message
060500 -20 1480  RA4ADF/P UA3YAJ 73
062900 -18 1326  R2EA/P UA3YAJ R+02 (x2)
063000 -20 1325  RC7LX UA3YAJ R-08
060715 -12 1338  UA3YAJ ON1DGN -11 (x4)
060845 -14 1650  UA3YAJ F1IQH JN27 (x3)
061145 -17 1649  UA3ZMQ UA3YAJ KO72
061215 -18 1653  UA3YAJ F1PSX JN08 (x2)
061315 -23 1648  UA3ZMQ UA3YAJ 73

20m

UTC    dB Audio  Message
112530 -12 1645  R9FDE/P UA3YAJ KO72
115830  -8 1313  R9OOS UA3YAJ KO72
123515 -10 1447  R7ZY UA3YAJ KO72 (x3)
123930 -14 2049  UA3YAJ R7ZY -03
125345 -12 1486  CQ UA3YAJ KO72
125415  -9 1486  UK8FCM UA3YAJ R-08
125430 -19 1486  UA3YAJ UK8FCM RR73
125615  -5 1485  YO5PHL UA3YAJ -17 (x2)
125945  -5 1485  RD0L UA3YAJ KO72
130115  -2 1222  <...> UA3YAJ KO72 (x2)
061915 -15 1087  UA3YAJ DK5DW JN68

Decoder S/N history by band

Count-weighted daily averages across messages attributed to this profiled token and successfully decoded at SO8OO, limited to the rolling 90-day UTC chart window.

CW

No CW receptions recorded for this callsign in the last 30 days.

Explore CW reception at SO8OO

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