S50SD — 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 S50SD, decoded by SO8OO in southeastern Poland. 176 FT8 messages attributed to this token as transmitter, on 80m, 60m, 40m, 20m, across 15 UTC dates in the available aggregate history. Observed between 2026-08-07 and 2026-11-04.

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 176 FT8 messages attributed to S50SD as the transmitting token by decoded message structure across 15 UTC dates in the available aggregate history. The largest monitored-band total was 60 m (46%), followed by 20 m (31%) and 40 m (16%). Several six-hour UTC windows tied for the largest share (90%), so no unique busiest interval is claimed. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (73%); the estimated median was -4 dB.

Overview

176

Messages attributed

UTC dates decoded

Active 15-min windows

-4 dB

Estimated median S/N

Bands

80m · 12 60m · 81 40m · 29 20m · 54

First attributed message: 2026-08-07
Last attributed message: 2026-11-04 23:33 UTC

Observed FT8 message patterns

Attributed sample: 176 messages
Active dates: 15 UTC dates
Estimated median S/N: -4 dB
Estimated 10th-90th percentile: -13 to +8 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 7, moderate (-15 to -9 dB) 41, strong (≥ -8 dB) 128.

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 S50SD in decoded directed-looking exchanges:

VE1YX · Canada ×2 A93MO · Bahrain E74K · Bosnia-Herzegovina EA2BHE · Spain F5PBG · France HP1RY · Panama OH0ERF · Aland Islands OH6IH · Finland RN6MA · European Russia TI5RR · Costa Rica YO4NF · Romania 9A4ZM · Croatia

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 S50SD

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 · 97 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 631 km (approx.)
Last such locator decoded: 2026-11-04 23:33 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	S50SD S/N	Counterpart	Counterpart S/N	Msgs	Capture
11-04 23:28	40m	-12 / -	5R8IC	- / -	8	Partial capture
11-04 23:23	40m	-12 / -	5R8IC	- / -	3	Partial capture
11-04 23:19	40m	-10 / -	XV9B	- / -	6	Partial capture
11-03 22:25	60m	-1 / -	Z30A	- / -	5	Partial capture
10-01 22:23	60m	+4 / 0	DF7EF	+14 / +4	8	✓ Full exchange observed
10-01 22:22	60m	0 / +7	ON1JP	-22 / -12	4	Partial capture
10-01 22:21	60m	0 / +5	G4ZFJ	+5 / +1	6	✓ Full exchange observed
10-01 22:19	60m	+6 / -1	F4BJN	-15 / -8	5	✓ Full exchange observed
10-01 22:19	60m	+5 / -10	F5MYK	-12 / -11	6	✓ Full exchange observed
10-01 22:17	60m	-11 / -	VE1YX	-12 / -13	5	✓ Closing observed
09-30 22:55	80m	- / -	UA4FKT	+1 / -	4	Partial capture
09-30 22:54	80m	- / -8	HG8LXL	+10 / -	3	✓ Closing fragment
09-30 22:53	80m	-5 / +1	Z61DX	+4 / -13	4	✓ Full exchange observed
09-30 22:30	80m	-1 / -	Z61DX	- / -	6	Partial capture
09-30 22:26	80m	+9 / -	Z61DX	- / -	4	Partial capture
09-29 20:38	60m	+1 / -	OZ5AGJ	- / -8	2	Partial capture
09-29 20:35	60m	-2 / +4	F5RRS	+1 / +2	8	✓ Full exchange observed
09-29 20:35	60m	-1 / +1	DF1IH	+5 / -5	5	✓ Full exchange observed
09-29 20:34	60m	-1 / +1	YO2MAX	-20 / +1	4	✓ Full exchange observed
09-29 20:31	60m	-1 / +5	HB9GNH	-13 / -4	9	✓ Full exchange observed
09-21 21:43	60m	+6 / +2	LB5WB	0 / 0	5	✓ Full exchange observed
09-21 21:41	60m	+8 / 0	DL9KM	-17 / -11	5	✓ Full exchange observed
09-21 21:41	60m	+6 / -1	F5LOW	+1 / -5	4	✓ Full exchange observed
09-21 21:39	60m	+8 / -11	TF1A	-7 / -10	6	✓ Full exchange observed
09-21 21:26	60m	+7 / -	SO5WD	- / -13	2	✓ Closing fragment
09-21 21:25	60m	+8 / +6	OT4R	-10 / -7	5	✓ Full exchange observed
09-21 21:23	60m	+8 / +7	YU/S55OO	-7 / -6	5	Partial capture
09-21 21:19	60m	+7 / -	HA5UK	+4 / +5	5	✓ Full exchange observed
09-21 21:18	60m	+8 / -	DK7ZT	-9 / -5	7	✓ Full exchange observed
09-21 21:15	60m	+6 / -3	IS0DDL	-7 / -4	5	✓ Full exchange observed
09-21 21:15	60m	+8 / +8	ON7GB	+12 / +2	11	✓ Full exchange observed
09-21 21:15	60m	- / -	PE1NPS	-3 / -	3	Partial capture
09-21 21:14	60m	+6 / -	T77RN	-5 / 0	5	✓ Full exchange observed
09-14 22:10	60m	-11 / -	DL50IPARC	- / -7	2	Partial capture
09-10 22:14	60m	-19 / -7	EA1IOK	-1 / -	6	✓ Closing observed
09-10 22:13	60m	-24 / -20	VE1YX	-12 / -12	3	✓ Full exchange observed
08-31 22:36	60m	-12 / -12	VE1YX	-17 / -	6	Partial capture
08-31 22:29	40m	-9 / -	RI1FJL	- / -19	7	Partial capture
08-31 22:19	40m	-10 / -	RI1FJL	- / -19	4	Partial capture
08-26 22:44	60m	-8 / -	VE1YX	- / -	2	Partial capture
08-24 07:22	20m	+1 / -	A93MO	- / -21	3	✓ Closing fragment
08-24 07:19	20m	-12 / -19	E74K	+6 / -11	4	✓ Full exchange observed
08-24 07:14	20m	-6 / -	A93MO	- / -	5	Partial capture
08-24 07:11	20m	0 / -	TI5RR	-13 / -14	4	✓ Closing observed
08-22 23:39	20m	-6 / -	VE2FVV	- / -	2	Partial capture
08-22 23:34	20m	-5 / -	TJ1GD	- / -	8	Partial capture
08-22 23:32	20m	-6 / -17	HP1RY	-15 / -11	5	✓ Full exchange observed
08-22 23:30	20m	-6 / -10	YO4NF	+10 / -	3	✓ Closing observed
08-22 23:27	20m	-4 / -	HP1RY	- / -	2	Partial capture
08-22 23:25	20m	-2 / -	VE3GLN	- / -	2	Partial capture

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
232030 -11 1919  XV9B S50SD JN76 (x4)
232315  -5 2270  5R8IC S50SD JN76 (x11)

60m

UTC    dB Audio  Message
222315  +1 2311  ON1JP S50SD R-12
222330 +14  387  S50SD DF7EF JO30
222345  -1 2311  ON1JP S50SD R-12
222400 +12  387  S50SD DF7EF JO30 (x2)
222445  +3 2311  DF7EF S50SD +04
222500 +10  387  S50SD DF7EF R+00
222515  +6 2311  DF7EF S50SD RR73
222530 +17  387  S50SD DF7EF 73
221445 -24 1981  S9R S50SD JN76
222530  +5 2449  Z30A S50SD JN76 (x5)

80m

UTC    dB Audio  Message
223100  -1 2414  Z61DX S50SD JN76 (x5)
225315  +2  852  S50SD Z61DX +01
225330  -4 1195  Z61DX S50SD R-13
225345  +6  852  S50SD Z61DX RR73
225415 +12 1285  S50SD HG8LXL KN06 (x2)
225515  -2 1195  S50SD UA4FKT LO23
225515  +2 1285  S50SD HG8LXL 73
225545  -1 1195  S50SD UA4FKT LO23 (x3)

20m

UTC    dB Audio  Message
071145 -13  909  S50SD TI5RR RR73
071200  +4 2756  TI5RR S50SD 73
071300  -6 2756  OH6IH S50SD 73
071415  -4 2756  A93MO S50SD JN76 (x5)
071930  +3 2585  S50SD E74K -19
071945 -11 2559  E74K S50SD R-11
072000  +8 2585  S50SD E74K RR73
072015 -12 2559  E74K S50SD 73
072215  +2 2559  A93MO S50SD R-21 (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.

CW

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

Explore CW reception at SO8OO

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