UW8SM — 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: Ukraine Most frequent locator attributed to this token: KN28

Receiver-side FT8 activity involving UW8SM, decoded by SO8OO in southeastern Poland. 845 FT8 messages attributed to this token as transmitter, on 160m, 80m, 60m, 40m, 20m, across 59 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-10-18.

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 845 FT8 messages attributed to UW8SM as the transmitting token by decoded message structure across 59 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (43%), followed by 40 m (34%) and 60 m (12%). The busiest six-hour window was 02:00-08:00 UTC, containing 42% of decodes. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -7 dB.

Overview

845

Messages attributed

UTC dates decoded

218

Active 15-min windows

-7 dB

Estimated median S/N

Bands

160m · 6 80m · 80 60m · 105 40m · 290 20m · 364

First attributed message: 2026-06-06
Last attributed message: 2026-10-18 01:48 UTC

Observed FT8 message patterns

Attributed sample: 845 messages
Active dates: 59 UTC dates
Estimated median S/N: -7 dB
Estimated 10th-90th percentile: -19 to +7 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 165, moderate (-15 to -9 dB) 217, strong (≥ -8 dB) 463.

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 UW8SM in decoded directed-looking exchanges:

F4HSB · France ×2 KT4ZG · United States ×2 S58S · Slovenia ×2 AA9M · United States AB8XG · United States AO5FSB · Spain BD4WBT · China CP6CL · Bolivia CT2FEY · Portugal CT3MD · Madeira Islands CX1UI · Uruguay D2IM · Angola

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 UW8SM

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: KN28 · 659 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 283 km (approx.)
Last such locator decoded: 2026-10-18 01:48 UTC

Other locator fields attributed to this token: KN29 (2).

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	UW8SM S/N	Counterpart	Counterpart S/N	Msgs	Capture
10-20 04:15	40m	- / -19	F1PBZ	+4 / -	2	Partial capture
10-20 04:05	40m	- / -1	HB9ELE	+13 / -	3	✓ Closing fragment
10-17 23:57	40m	- / -6	UK8OM	-4 / -	2	✓ Closing fragment
10-17 23:27	40m	- / -15	W4UM	-10 / -	2	✓ Closing fragment
10-16 23:35	40m	- / +7	PA6OOI/J	+3 / -	2	Partial capture
10-16 23:11	40m	- / -4	HZ1IP	-8 / -	2	Partial capture
10-16 21:47	40m	- / -2	K1ZZ	-8 / -	3	✓ Closing fragment
10-16 20:33	40m	- / -	IZ4PKC	-6 / -	2	Partial capture
10-16 20:02	40m	- / -	PF1B	-5 / -	2	Partial capture
10-15 04:33	40m	- / +2	DJ3HW	-6 / -	2	✓ Closing fragment
10-15 04:23	40m	- / -9	LY5A	-2 / -	2	✓ Closing fragment
10-15 04:07	40m	- / -14	F4JTP	-4 / -	2	✓ Closing fragment
10-15 03:55	40m	- / +2	ON3ANY	+11 / -	2	✓ Closing fragment
10-15 03:52	40m	- / -11	F5MOO	0 / -	2	✓ Closing fragment
10-14 19:57	40m	- / -15	F4LHL	-2 / -	2	✓ Closing fragment
10-14 19:41	40m	- / -6	LB7Q	-13 / -	2	✓ Closing fragment
10-14 19:36	40m	- / -14	EA3IE	-15 / -	2	✓ Closing fragment
10-14 19:34	40m	- / -13	PD0OTH	-5 / -	3	✓ Closing fragment
10-14 19:27	40m	- / -2	DM5KM	+2 / -	2	✓ Closing fragment
10-14 19:14	40m	- / -9	F4HRG	+5 / -	2	Partial capture
10-14 19:12	40m	- / +3	DM1SV	+2 / -	2	✓ Closing fragment
10-14 19:04	40m	- / -3	PA0GSP	0 / -	2	✓ Closing fragment
10-14 03:51	40m	- / -7	PQ5TA	-6 / -	2	✓ Closing fragment
10-13 04:36	40m	- / -	SV5BYP	-9 / -	5	Partial capture
10-11 18:51	60m	-5 / -	H49A	- / -	8	Partial capture
10-11 18:43	60m	-8 / -	H49A	- / -	2	Partial capture
10-11 18:33	60m	-20 / -	H49A	- / -	2	Partial capture
10-11 17:44	60m	-15 / -	H49A	- / -	6	Partial capture
10-11 17:12	60m	-10 / -	H49A	- / -	12	Partial capture
10-11 17:08	60m	-15 / -	H49A	- / -	3	Partial capture
10-11 16:51	60m	-12 / -	H49A	- / -	5	Partial capture
10-11 16:41	60m	-12 / -	H49A	- / -	12	Partial capture
10-11 16:25	60m	-8 / -	H49A	- / -	21	Partial capture
10-11 16:18	60m	-5 / -	H49A	- / -	3	Partial capture
10-11 16:13	60m	- / -	F1DXP	-10 / -	2	Partial capture
10-11 16:13	60m	- / -	G4HUE	-4 / -	2	Partial capture
10-11 16:13	60m	- / -5	OT4N	-9 / -	2	Partial capture
10-11 16:11	60m	- / -	DL8UBR	-8 / -	2	Partial capture
10-11 16:10	60m	- / -	G4ATX	-6 / -	6	Partial capture
10-10 06:48	40m	+2 / -	M9YDD	- / -	3	Partial capture
10-10 06:44	40m	+2 / -	IK0XBU/P	- / -15	6	✓ Closing fragment
10-10 06:42	40m	+4 / -7	AO5CV	-14 / -12	6	✓ Full exchange observed
10-10 06:35	40m	+2 / -	DC9GT	- / -16	13	Partial capture
10-10 06:26	40m	-3 / -	M9YDD	- / -	18	Partial capture
10-10 06:21	40m	-1 / -	DC7MF	-3 / -21	10	✓ Closing observed
10-10 06:20	40m	+6 / -	G8VHI	- / -24	3	✓ Closing fragment
10-10 06:17	40m	+1 / -1	DL7DF	-17 / -14	5	✓ Full exchange observed
10-10 06:12	40m	+3 / -	EA5PS	- / -	9	Partial capture
10-10 06:09	40m	+4 / -	OM3WFH	- / -11	6	✓ Closing fragment
10-10 06:08	40m	+10 / +9	DB3OI	-2 / -10	5	✓ Full exchange observed

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
204915 -17 2049  UW8SM EA8UU -09
232715  -9 1235  UW8SM W4UM -15 (x2)
235700  -3 1996  UW8SM UK8OM -06 (x2)
004345  -8  542  UW8SM VU2CPL RR73
014815  -2  638  F5OYA/P UW8SM KN28
025500 -19 2259  UW8SM R8QA -13
040500 +13  791  UW8SM HB9ELE -01 (x3)
041500  +4 2690  UW8SM F1PBZ -19 (x2)
041630 -23 1557  UW8SM YY5EHT 73
035145 -20 1540  UW8SM NP4ML RR73

60m

UTC    dB Audio  Message
174645 -13 2171  H49A UW8SM KN28 (x14)
200945 -10 1053  UW8SM <...> -17

160m

UTC    dB Audio  Message
190515 +24  340  RI1FJZ UW8SM KN29 (x6)

80m

UTC    dB Audio  Message
193845  +6  893  RI1FJZ UW8SM KN28 (x9)
154145 +19  721  KH8WW UW8SM KN28 (x6)

20m

UTC    dB Audio  Message
185745  +1 2664  UW8SM F5CCX RR73 (x2)
194315  -4 1418  UW8SM LZ6C -20
194930 -21 1576  UW8SM CT7AQP -14 (x3)
200430 -12  880  UW8SM LX1LANZ +10
203400  -8 1014  UW8SM WJ1X -15 (x3)
222545 -19 1564  LU6HR UW8SM KN28
210930 -11 3027  UW8SM KE2CQG -16 (x2)
214830  -8  931  UW8SM W3FAY RR73
225115  -7  710  W2TDS UW8SM KN28

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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