S52UF — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Slovenia Most frequent locator attributed to this token: JN76

Receiver-side FT8 activity involving S52UF, decoded by SO8OO in southeastern Poland. 2,659 FT8 messages attributed to this token as transmitter, on 80m, 60m, 40m, across 29 UTC dates in the available aggregate history. Observed between 2026-06-08 and 2026-09-08.

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 2,659 FT8 messages attributed to S52UF as the transmitting token by decoded message structure across 29 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (78%), followed by 80 m (17%) and 60 m (5%). Most decodes (72%) fell within the six-hour window 00:00-06:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -8 dB.

Overview

2,659

Messages attributed

UTC dates decoded

178

Active 15-min windows

-8 dB

Estimated median S/N

Bands

80m · 445 60m · 134 40m · 2,080

First attributed message: 2026-06-08
Last attributed message: 2026-09-08 03:07 UTC

Observed FT8 message patterns

Attributed sample: 2,659 messages
Active dates: 29 UTC dates
Estimated median S/N: -8 dB
Estimated 10th-90th percentile: -18 to 0 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 408, moderate (-15 to -9 dB) 863, strong (≥ -8 dB) 1,388.

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 S52UF in decoded directed-looking exchanges:

SP5DFK · Poland ×2 N1MIW · United States ×2 SP1ZMO · Poland ×2 F5LMJ · France ×2 K1CPT · United States ×2 G1CEC · England ×2 DL7UKM · Fed. Rep. of Germany ×2 EA7Y · Spain ×2 G8OO · England ×2 SP3OTZ · Poland ×2 DM8KM · Fed. Rep. of Germany ×2 HA3IC · Hungary ×2

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 S52UF

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: JN76 · 1,934 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 631 km (approx.)
Last such locator decoded: 2026-09-08 03:06 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	S52UF S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-08 03:06	80m	-17 / -	SM7TZK	- / -10	3	✓ Closing fragment
09-08 03:04	80m	-14 / -	OV6ZM	- / -	4	Partial capture
09-08 02:59	80m	-10 / -14	LB3RK	-9 / -18	3	Partial capture
09-08 02:58	80m	-12 / -	HF100PKP	- / -	2	Partial capture
09-08 02:54	80m	-20 / -9	RW1AI	-14 / -10	3	✓ Full exchange observed
09-08 02:52	80m	-21 / -14	DO1OAS	-14 / -12	3	✓ Full exchange observed
09-08 02:47	80m	-12 / -	T77NC	- / -6	4	Partial capture
09-08 02:33	40m	-6 / -	YN8ZAC	- / -	8	Partial capture
09-08 02:29	40m	-6 / -	DL2EAD/QRP	- / -14	6	Partial capture
09-08 02:26	40m	-14 / -	WA4YIZ	- / -1	4	Partial capture
09-07 18:27	40m	-4 / -	SQ100PKP	- / -	2	Partial capture
09-07 18:26	40m	-10 / -	SP1LIS	-1 / -2	3	✓ Closing observed
09-07 18:23	40m	-2 / -	JH5LCN	- / -	4	Partial capture
09-07 18:22	40m	0 / -14	G0RVY	+6 / -9	5	✓ Full exchange observed
09-07 18:18	40m	+3 / -5	HA3IC	+7 / -4	6	✓ Full exchange observed
09-07 18:18	40m	-1 / -	R4PFY	-11 / -	2	✓ Closing observed
09-07 18:14	40m	-3 / -18	R4PFY	-9 / +4	4	Partial capture
09-07 18:07	40m	-3 / -	HA7NB	-9 / -7	2	✓ Closing observed
09-07 18:01	40m	- / -	IZ4AIF	-10 / -	3	✓ Closing fragment
09-07 17:58	40m	-4 / -	5Q1X	- / -12	3	✓ Closing fragment
09-07 17:56	40m	- / -	LZ1CRI	+2 / -	2	Partial capture
09-07 17:55	40m	-2 / -	JA5NSR	- / -	2	Partial capture
09-07 17:54	40m	-1 / -	OK3MB	- / -13	2	✓ Closing fragment
09-07 17:53	40m	-2 / -	E70SZ	0 / -2	3	✓ Closing observed
09-07 17:50	40m	-3 / -10	IW8BZE	-6 / -2	5	✓ Full exchange observed
09-07 17:46	40m	-2 / -	LB8TG	-11 / -19	5	✓ Closing observed
09-07 17:44	40m	-2 / -	OE5ABL	- / -3	2	Partial capture
09-07 17:36	40m	-3 / -10	DL5JW	-17 / -	4	✓ Closing observed
09-07 17:33	40m	-1 / -	DL7UKM	- / -1	2	✓ Closing fragment
09-07 17:29	40m	0 / -	M9DJN	- / -4	4	✓ Closing fragment
09-07 17:27	40m	0 / -	F6BHK	-10 / -5	3	✓ Closing observed
09-07 17:25	40m	0 / -	YE4FNN	- / -	4	Partial capture
09-07 17:23	40m	-2 / -	SO100PKP	- / -10	2	Partial capture
09-07 17:22	40m	0 / -8	OK1PSV	-15 / -3	5	✓ Full exchange observed
09-07 17:18	40m	-6 / -	SO100PKP	- / -6	2	Partial capture
09-07 17:14	40m	-2 / -	DO7UFN	-24 / -7	3	✓ Closing observed
09-07 17:10	40m	-2 / -	SP100PKP	- / -14	2	Partial capture
09-06 05:34	40m	-10 / -	IN3LHF	- / +7	2	✓ Closing fragment
09-06 05:26	40m	-6 / -	OM1DLC/P	- / -	5	Partial capture
09-06 05:24	40m	-4 / -	T77NC	- / -1	3	Partial capture
09-06 05:21	40m	-6 / -	KJ5PTH	- / -	5	Partial capture
09-06 05:20	40m	-4 / -	KC0VTJ	- / -	3	Partial capture
09-06 05:16	40m	-6 / -	LA5LDX/P	- / -	2	Partial capture
09-06 05:15	40m	-3 / +7	OZ8MW/P	+4 / -	4	✓ Closing observed
09-06 05:09	40m	-6 / -	T77NC	- / -20	5	Partial capture
09-06 05:03	40m	-7 / -	Z68BR	- / -9	3	✓ Closing fragment
09-06 04:57	40m	-7 / -	T77NC	- / -18	3	Partial capture
09-06 04:55	40m	-6 / -	LB5CK	- / -	3	Partial capture
09-06 04:51	40m	-5 / -	LA9H	- / -	3	Partial capture
09-06 04:48	40m	-4 / -	KE9BLG	- / -	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
025445 -13 2012  S52UF RW1AI 73
025530 -10 1666  CQ S52UF JN76
025845 -14 1515  <HF100PKP> S52UF JN76 (x2)
025945 -10 1515  LB3RK S52UF JN76
030000  -9  417  S52UF LB3RK -14
030015 -11 1516  LB3RK S52UF R-18
030115  -2 1515  SM7TZK S52UF JN76
030415 -11 1941  OV6ZM S52UF JN76 (x4)
030645 -17 1941  SM7TZK S52UF JN76 (x3)

40m

UTC    dB Audio  Message
023415 -13 1791  YN8ZAC S52UF JN76 (x6)
023715  -5 1791  CQ S52UF JN76 (x9)

60m

UTC    dB Audio  Message
013745 -14 1833  CQ S52UF JN76 (x8)
014900 -20 1570  KT4ZG S52UF JN76 (x2)
020800  -7 1727  CQ S52UF JN76                         a1 (x5)

20m

UTC    dB Audio  Message
141330 -13 1476  S52UF EA3AGF R-09
141630 -13 2570  S52UF PD2WL -17 (x9)
044830  -7  709  S52UF 3A2MW -19 (x2)
050000  +1 1698  S52UF F4LNM JN09 (x3)

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.

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