S57UX — 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: Slovenia Most frequent locator attributed to this token: JN76

Receiver-side FT8 activity involving S57UX, decoded by SO8OO in southeastern Poland. 674 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, across 43 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-10-17.

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 674 FT8 messages attributed to S57UX as the transmitting token by decoded message structure across 43 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (58%), followed by 40 m (41%) and 20 m (1%). Most decodes (87%) fell within the six-hour window 18:00-00:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (93%); the estimated median was +5.8 dB.

Overview

674

Messages attributed

UTC dates decoded

Active 15-min windows

+5.8 dB

Estimated median S/N

Bands

80m · 392 40m · 277 20m · 5

First attributed message: 2026-06-06
Last attributed message: 2026-10-17 21:24 UTC

Observed FT8 message patterns

Attributed sample: 674 messages
Active dates: 43 UTC dates
Estimated median S/N: +5.8 dB
Estimated 10th-90th percentile: -6.4 to +12 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 7, moderate (-15 to -9 dB) 39, strong (≥ -8 dB) 628.

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 S57UX in decoded directed-looking exchanges:

T77RN · San Marino ×3 5A1AL · Libya 6K5XZE · Republic of Korea 8Z1IT · Saudi Arabia 9J2FI · Zambia A61SD · United Arab Emirates BH4GUU · China CT7AUT · Portugal LX1RFJ · Luxembourg MM0HVU · Scotland PD1RGW · Netherlands SV9QWC · Crete

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 S57UX

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 · 392 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 631 km (approx.)
Last such locator decoded: 2026-10-17 21:23 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	S57UX S/N	Counterpart	Counterpart S/N	Msgs	Capture
10-17 21:23	80m	+6 / -	UN0GY	- / -13	3	✓ Closing fragment
10-17 21:20	80m	+6 / -6	ER5DX	+6 / -2	5	✓ Full exchange observed
10-17 21:20	80m	+1 / -	DK8HC	0 / -9	7	✓ Closing observed
10-17 21:19	80m	+6 / -	T77RN	-6 / -2	3	✓ Closing observed
10-17 21:17	80m	+5 / -	G0HSP	-15 / -8	4	✓ Closing observed
10-17 21:14	80m	+2 / -	T77RN	- / -	4	Partial capture
10-14 20:59	80m	- / -	DL9ATW	+11 / -	3	Partial capture
10-14 20:56	80m	0 / -18	JA0IXW	-16 / -15	6	✓ Full exchange observed
10-14 20:55	80m	+7 / -	JH0MSF	- / -25	2	✓ Closing fragment
10-14 20:52	80m	+6 / -16	JA6EXO	-18 / -25	6	✓ Full exchange observed
10-14 20:51	80m	- / -	JA9XRL	-16 / -	4	Partial capture
10-14 20:51	80m	- / -	JE2DZC	-14 / -	2	Partial capture
10-14 20:50	80m	- / -	JH4IFF	-5 / -	2	Partial capture
10-14 20:50	80m	+3 / -	JE7JDL	-20 / -25	5	Partial capture
10-14 20:48	80m	+7 / -	JF2JRD	-11 / -25	5	✓ Closing observed
10-14 20:47	80m	+2 / -11	JE2ERR	-10 / -16	6	✓ Full exchange observed
10-14 20:47	80m	+4 / -	JA0HXV	- / -18	2	✓ Closing fragment
10-14 20:44	80m	+8 / -11	JR1AIB	-6 / -16	6	✓ Full exchange observed
10-14 20:43	80m	+6 / -14	JJ3JHP	-13 / -19	5	✓ Full exchange observed
10-12 20:57	40m	-9 / -8	8Z1IT	-9 / -7	5	✓ Full exchange observed
10-12 10:53	40m	-6 / -	LX1RFJ	- / 0	5	✓ Closing fragment
10-09 21:21	40m	0 / -	CX6TU	- / -	4	Partial capture
10-09 21:17	80m	-2 / -	OE9GWV	- / -	2	Partial capture
10-09 21:15	80m	+11 / -	9K2HS	- / -17	2	Partial capture
10-09 21:08	80m	+9 / -	D2UY	- / -	7	Partial capture
10-05 20:45	80m	+8 / -	JH1IFS	- / -	2	Partial capture
10-05 20:13	40m	-3 / -	7Z1BQ	- / -	5	Partial capture
10-04 00:07	80m	+13 / -5	RC6OU	+1 / -1	5	✓ Full exchange observed
10-04 00:05	80m	+14 / +7	Z62NS	-1 / -	4	✓ Full exchange observed
09-29 20:45	80m	+13 / -17	JH2FXK	-4 / -13	3	Partial capture
09-29 20:43	80m	+14 / -	JH4AAG	- / -	3	Partial capture
09-29 20:41	80m	+7 / -	T77RN	- / -15	3	✓ Closing fragment
09-10 21:17	40m	-12 / -	VJ6X	- / -	2	Partial capture
09-10 21:15	40m	-6 / -	6K5XZE	- / -19	2	✓ Closing fragment
09-10 21:10	40m	-8 / -	CX6TU	- / -	2	Partial capture
09-09 22:21	40m	- / 0	CT7AUT	-11 / -	2	✓ Closing fragment
09-04 21:58	80m	+9 / -	RI1FJL	- / -	9	Partial capture
09-03 23:04	80m	+12 / -	ST0P	- / -	5	Partial capture
09-03 22:54	80m	+10 / -	RI1FJL	- / -	9	Partial capture
09-03 22:47	80m	+7 / -	A61FL	- / -	3	Partial capture
09-03 22:46	80m	+5 / -9	PC2F	-16 / -8	4	✓ Full exchange observed
09-03 22:45	80m	- / +1	YO4NF	+12 / -	2	Partial capture
09-03 22:44	80m	+6 / -	VU2NKS	- / -17	3	✓ Closing fragment
09-03 22:25	80m	+9 / -	RI1FJL	- / -14	11	Partial capture
09-03 22:22	80m	-8 / -	RI1FJL	- / -	2	Partial capture
08-21 09:35	40m	-20 / -	<...>	- / -	2	Partial capture
08-20 22:18	40m	- / -	DB3MAX	0 / -	4	Partial capture
08-20 22:17	40m	-7 / -	VK6DU	- / -20	3	✓ Closing fragment
08-20 22:12	40m	-2 / -	VU2RPS	- / -	4	Partial capture
08-20 22:10	40m	-6 / -	PD1RGW	-8 / -9	4	✓ Closing observed

Recent FT8 messages decoded at SO8OO

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

80m

UTC    dB Audio  Message
212000  -2  565  S57UX DK8HC JO42
212015  +7 2165  ER5DX S57UX JN76
212030  +6 2796  S57UX ER5DX -06
212045  +9 2165  ER5DX S57UX R-02
212100  +5 2796  S57UX ER5DX RR73
212100  -8  565  S57UX DK8HC JO42
212115  +2 2164  ER5DX S57UX 73
212145  +3 2165  DK8HC S57UX -09
212200  +5  565  S57UX DK8HC JO42
212215  -2 2165  DK8HC S57UX -05 (x2)
212300  +6  565  S57UX DK8HC 73
212345  +9 2165  UN0GY S57UX JN76 (x3)

40m

UTC    dB Audio  Message
212100  +0 1898  CX6TU S57UX JN76 (x4)
105300  -5 1801  LX1RFJ S57UX JN76 (x5)
205745 -11 1695  8Z1IT S57UX JN76 (x2)
205830  -9 2352  S57UX 8Z1IT -08
205845  -4 1695  8Z1IT S57UX R-07 (x2)
201800  +0  826  S57UX EK/RX3DPK -11

20m

UTC    dB Audio  Message
070415  -6  562  S57UX DK5OPA JO30

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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