S58MU — 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 S58MU, decoded by SO8OO in southeastern Poland. 5,373 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, across 105 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-10-22.

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 5,373 FT8 messages attributed to S58MU as the transmitting token by decoded message structure across 105 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (67%), followed by 80 m (32%) and 20 m (2%). Most decodes (70%) fell within the six-hour window 02:00-08:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (82%); the estimated median was +1 dB.

Overview

5,373

Messages attributed

105

UTC dates decoded

592

Active 15-min windows

+1 dB

Estimated median S/N

Bands

80m · 1,698 40m · 3,578 20m · 97

First attributed message: 2026-06-06
Last attributed message: 2026-10-22 06:45 UTC

Observed FT8 message patterns

Attributed sample: 5,373 messages
Active dates: 105 UTC dates
Estimated median S/N: +1 dB
Estimated 10th-90th percentile: -12 to +12 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 236, moderate (-15 to -9 dB) 714, strong (≥ -8 dB) 4,423.

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 S58MU in decoded directed-looking exchanges:

ON4MAP · Belgium ×10 F1PBZ · France ×4 F1IQH · France ×3 IK4LZH · Italy ×3 IZ5FSO · Italy ×3 R5AV · European Russia ×3 ON1JP · Belgium ×3 UB3LBU · European Russia ×3 9A2L · Croatia ×2 CT1BFP · Portugal ×2 F4HSB · France ×2 PD4RJ · Netherlands ×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 S58MU

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 · 3,024 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 631 km (approx.)
Last such locator decoded: 2026-10-22 06:45 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	S58MU S/N	Counterpart	Counterpart S/N	Msgs	Capture
10-22 06:45	40m	- / -7	G0HSP	-14 / -	3	Partial capture
10-22 06:43	40m	-22 / -	F4MXT/P	-9 / +7	2	Partial capture
10-21 05:42	40m	-19 / -	F5OYA/P	- / -3	2	Partial capture
10-21 05:26	40m	- / +1	GJ0KYZ	+2 / -	2	✓ Closing fragment
10-21 05:22	40m	- / -19	YV6BXN	-22 / -	2	Partial capture
10-21 03:31	80m	- / -	ON4MAP	-24 / -	3	Partial capture
10-21 03:27	80m	+7 / -14	RJ3DC	-5 / -15	5	✓ Full exchange observed
10-19 03:59	40m	- / -4	TA3NK	-12 / -	6	Partial capture
10-19 03:15	40m	- / -6	CT2HEX	-13 / -	3	✓ Closing fragment
10-18 05:44	40m	-4 / -	F5LZN	- / -	2	Partial capture
10-18 05:38	40m	0 / -	N9CBW	- / -13	2	✓ Closing fragment
10-18 05:35	40m	0 / -3	MW7RHR	-6 / -	3	✓ Full exchange observed
10-18 05:31	40m	-6 / -	DC7AW	- / -3	2	✓ Closing fragment
10-18 05:29	40m	-4 / -17	R4FDD	-6 / -5	5	✓ Full exchange observed
10-18 05:28	40m	-2 / -	RJ3DC	-19 / -12	3	Partial capture
10-17 05:20	40m	- / 0	R1TET	-16 / -	2	✓ Closing fragment
10-17 05:17	40m	- / 0	UC6D	+9 / -	3	✓ Closing fragment
10-17 05:09	80m	+6 / -	IS0XPK	-6 / -13	5	✓ Closing observed
10-17 05:01	80m	+10 / -5	M9PAS	-2 / -9	5	✓ Full exchange observed
10-17 04:54	40m	- / -10	LY7T	-10 / -	2	Partial capture
10-16 07:10	40m	- / -1	OE8JOTA	-9 / -	2	Partial capture
10-16 07:08	40m	-10 / -6	HB9ACA	-12 / -2	5	✓ Full exchange observed
10-16 07:06	40m	-10 / -	M/NT6B	- / +3	2	Partial capture
10-16 07:02	40m	-6 / -9	DC6REH	-20 / -	3	✓ Closing observed
10-16 07:02	40m	-8 / -	DJ9MA	-11 / -1	5	✓ Closing observed
10-16 03:13	80m	+6 / -5	RW6HP	-4 / -6	5	✓ Full exchange observed
10-16 03:11	80m	+11 / -	ON4MAP	-7 / -18	3	✓ Closing observed
10-16 03:10	80m	+14 / -	DO1TLP	- / 0	2	✓ Closing fragment
10-16 03:07	80m	- / +5	DJ3HW	+6 / -	3	✓ Closing fragment
10-01 03:57	80m	- / -	F5LMJ	-19 / -	2	Partial capture
10-01 03:55	80m	+6 / -	IQ2AAH	-5 / -8	4	✓ Full exchange observed
10-01 03:54	80m	+7 / -	ON1JP	- / -25	3	✓ Closing fragment
10-01 03:52	80m	+10 / -2	ON4MAP	-13 / -21	5	✓ Full exchange observed
10-01 03:51	80m	+7 / -12	Z61DX	+6 / -2	4	✓ Full exchange observed
10-01 03:51	80m	- / -	CT2GQA	-12 / -	6	Partial capture
09-30 13:47	40m	+2 / -	OZ2BX	- / -10	4	✓ Closing fragment
09-30 13:45	40m	+4 / -	F4MXT/P	-8 / -10	6	✓ Closing observed
09-30 13:40	40m	+2 / -16	RN6AK	-8 / -11	4	Partial capture
09-30 13:39	40m	+3 / -12	IV3IPA	-10 / -4	5	✓ Full exchange observed
09-30 05:00	40m	-12 / -	SP5PSM	- / -10	2	✓ Closing fragment
09-30 04:49	40m	-4 / -	N5WXB	- / -10	4	Partial capture
09-30 04:43	40m	-11 / -	K0YEQ	- / -10	2	✓ Closing fragment
09-30 04:42	40m	-10 / -	AD9AR	- / -17	3	✓ Closing fragment
09-30 04:40	40m	-7 / -	TA3XEE	- / -12	2	✓ Closing fragment
09-29 19:46	80m	+7 / -17	UR5WDL	+8 / +9	3	Partial capture
09-29 19:44	80m	+2 / -7	R1WBW	+5 / 0	5	✓ Full exchange observed
09-29 19:40	80m	+4 / -	OK1VVZ	-1 / -6	3	Partial capture
09-29 19:34	80m	+4 / -12	RA2FU	-5 / -	4	✓ Closing observed
09-29 18:53	80m	+4 / +2	OH3EZ	-7 / -17	5	✓ Full exchange observed
09-29 18:51	80m	+8 / 0	OZ1EDR	-3 / -12	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
052715  +1  411  S58MU GJ0KYZ RR73
054015 -21 1930  G0LAT S58MU 73
054045 -11 1930  CQ S58MU JN76 (x3)
054245 -19 1929  F5OYA/P S58MU JN76 (x2)
064230 -10  484  CQ S58MU JN76
064315  -9 1040  S58MU F4MXT/P JN25
064330 -18 2093  CQ S58MU JN76
064430 -22 2092  F4MXT/P S58MU +07
064530 -21 2092  CQ S58MU JN76
064545 -14 2093  S58MU G0HSP IO90 (x3)

80m

UTC    dB Audio  Message
033100 +10 1562  CQ S58MU JN76
033115 -24 1213  S58MU ON4MAP JO20 (x2)
033315  -8 1563  S58MU 9A2G 73
033330 +12 1561  CQ S58MU JN76
033345 -23 1213  S58MU ON4MAP JO20
033400 +12 1561  CQ S58MU JN76 (x8)
040300  +5 2365  S58MU 9A3CHF R+01

20m

UTC    dB Audio  Message
070930  -5 2298  S58MU AO5FSB -04
070945 +12  748  AO5FSB S58MU R-18
071000 +10 2298  S58MU AO5FSB RR73
071015 +14  748  AO5FSB S58MU 73
071045 +11  747  CQ S58MU JN76 (x4)
114130 -14 1913  S58MU DM5SEB JN58
114215  -1  656  DM5SEB S58MU RR73
114245  +1  655  CQ S58MU JN76 (x2)
114500  -3 2580  S58MU ON/HB9HVG/P R-22
134945  -9  814  S58MU M7MOK JO01 (x2)

10m

UTC    dB Audio  Message
105800 -24 1731  S58MU F4FSY JN25 (x3)
120215  -5 2732  S58MU F1PBZ -10 (x3)
120915 -16 1496  S58MU F4FSY -09 (x2)

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

3 CW reception events in the last 30 days.

80m: 3 events; last heard 2026-10-18 05:02 UTC

Latest CW receptions

UTC	Band	kHz	S/N · 500 Hz	WPM	Listen
2026-10-18 05:02:43	80m	3538.089	27.5 dB	22	WebSDR ↗
2026-10-17 18:49:31	80m	3523.062	23.6 dB	25.5	WebSDR ↗
2026-10-17 18:49:31	80m	3523.021	18.1 dB	24.8	WebSDR ↗

CW reception history

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