FS4WBS — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: St. Martin Most frequent locator attributed to this token: FK88

Receiver-side FT8 activity involving FS4WBS, decoded by SO8OO in southeastern Poland. 176 FT8 messages attributed to this token as transmitter, on 40m, 20m, across 7 UTC dates in the available aggregate history. Observed between 2026-06-11 and 2026-09-19.

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 FS4WBS as the transmitting token by decoded message structure across 7 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (66%), followed by 20 m (34%). Several six-hour UTC windows tied for the largest share (89%), so no unique busiest interval is claimed. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -8 dB.

Overview

176

Messages attributed

UTC dates decoded

Active 15-min windows

-8 dB

Estimated median S/N

Bands

40m · 117 20m · 59

First attributed message: 2026-06-11
Last attributed message: 2026-09-19 23:42 UTC

Observed FT8 message patterns

Attributed sample: 176 messages
Active dates: 7 UTC dates
Estimated median S/N: -8 dB
Estimated 10th-90th percentile: -17 to +3 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 23, moderate (-15 to -9 dB) 63, strong (≥ -8 dB) 90.

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 FS4WBS in decoded directed-looking exchanges:

TF2CT · Iceland ×2 CT2FEY · Portugal E74PA · Bosnia-Herzegovina IK2TPX · Italy IW4AOT · Italy KF9TS · United States MW0AXD · Wales OZ6ABL · Denmark PD8RB · Netherlands SQ9DJQ · Poland SV5AZK · Dodecanese YO4GIY · Romania

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 FS4WBS

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: FK88 · 76 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 8,078 km (approx.)
Last such locator decoded: 2026-09-19 23:06 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	FS4WBS S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-19 23:46	40m	- / -	R8CEG	-15 / -	2	Partial capture
09-19 23:42	40m	- / -	PD0NYL	-3 / -	6	Partial capture
09-19 23:41	40m	- / -	R6OK	-5 / -	5	Partial capture
09-19 23:40	40m	-12 / -	LU1DOJ	- / -12	3	✓ Closing fragment
09-19 23:40	40m	- / -11	F5MSE	-8 / -	3	Partial capture
09-19 23:40	40m	- / -	UN9LCW	-9 / -	5	Partial capture
09-19 23:39	40m	- / -	ON7SD	+5 / -	3	Partial capture
09-19 23:39	40m	- / -13	R2BQM	0 / -	6	Partial capture
09-19 23:39	40m	- / -13	R3ES	-19 / -	4	Partial capture
09-19 23:39	40m	- / -	SV7SXE	0 / -	2	Partial capture
09-19 23:38	40m	-12 / -5	TF2CT	-2 / -	5	✓ Closing observed
09-19 23:38	40m	- / -	PE1NPS	-1 / -	4	Partial capture
09-19 23:37	40m	- / -	G0NGL	-22 / -	2	Partial capture
09-19 23:37	40m	-11 / -	LU1BCE	- / -19	2	✓ Closing fragment
09-19 23:37	40m	- / -	R8CEG	-20 / -	10	Partial capture
09-19 23:36	40m	- / -	ON7SD	-4 / -	2	Partial capture
09-19 23:35	40m	- / -	IU1QZM	-17 / -	5	Partial capture
09-19 23:35	40m	- / -	R6DUW	-13 / -	2	Partial capture
09-19 23:34	40m	- / -	R8CEG	-22 / -	2	Partial capture
09-19 23:33	40m	-9 / -	LU3DXU	- / -12	2	✓ Closing fragment
09-19 23:32	40m	- / -	G0NGL	-15 / -	5	Partial capture
09-19 23:32	40m	- / -	PD0LBY	-12 / -	3	Partial capture
09-19 23:30	40m	- / -	IU2SLI	-9 / -	3	Partial capture
09-19 23:30	40m	- / -	PD0NYL	-9 / -	13	Partial capture
09-19 23:30	40m	- / -	R8CEG	-20 / -	2	Partial capture
09-19 23:29	40m	- / -	UA0SCF	-19 / -	4	Partial capture
09-19 23:28	40m	- / -13	HA7JDU	-24 / -	2	Partial capture
09-19 23:28	40m	- / -	TA2L	-12 / -	2	Partial capture
09-19 23:28	40m	- / +8	DK7ZT	-12 / -	2	Partial capture
09-19 23:27	40m	- / -	IU1QZM	-14 / -	2	Partial capture
09-19 23:27	40m	- / -	M8KUG	-22 / -	8	Partial capture
09-19 23:27	40m	- / -	PD0LBY	-12 / -	2	Partial capture
09-19 23:27	40m	- / -	SV0XAD	-11 / -	23	Partial capture
09-19 23:27	40m	- / -	R6DUW	-10 / -	2	Partial capture
09-19 23:26	40m	-14 / -	YY2YMP	- / -18	3	✓ Closing fragment
09-19 23:26	40m	- / -	YE4FNN	-14 / -	2	Partial capture
09-19 23:26	40m	- / -20	BG9MM	-22 / -	5	Partial capture
09-19 23:26	40m	- / -	DL1SRS	0 / -	2	Partial capture
09-19 23:26	40m	- / -	F4EGM	-4 / -	2	Partial capture
09-19 23:25	40m	-14 / -	PY2CP	- / -9	2	✓ Closing fragment
09-19 23:24	40m	- / -16	SQ2RBY/P	-8 / -	2	Partial capture
09-19 23:23	40m	- / -7	R3ES	-6 / -	21	Partial capture
09-19 23:23	40m	- / -	SV7SXE	-5 / -	10	Partial capture
09-19 23:23	40m	-13 / -	N9MSG	- / -14	2	✓ Closing fragment
09-19 23:22	40m	- / -	IU5HIU	-9 / -	2	Partial capture
09-19 23:21	40m	- / -16	RD9M/3	0 / -	3	Partial capture
09-19 23:21	40m	-16 / -	W4MAA	- / -15	2	✓ Closing fragment
09-19 23:21	40m	- / -	DH1HF	-15 / -	2	Partial capture
09-19 23:20	40m	- / -	BD8CNL	-21 / -	8	Partial capture
09-19 23:20	40m	- / -	SV0XAD	-11 / -	7	Partial capture

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
234230 -13 1482  FS4WBS R8CEG MO06
234230  -4 1880  FS4WBS R6OK KN87
234230  -6 2475  FS4WBS PD0NYL JO21
234230  -7 1131  FS4WBS F5MSE -12
234300  -3 2392  FS4WBS UN9LCW MO13
234300  +0 1880  FS4WBS R6OK KN87
234300  -2 2475  FS4WBS PD0NYL JO21
234330  -6 1880  FS4WBS R6OK KN87
234330  -5 2475  FS4WBS PD0NYL JO21
234400  -7 2392  FS4WBS UN9LCW MO13
234430 -10 2375  FS4WBS SV0XAD KM18
234430  -2 2475  FS4WBS PD0NYL JO21 (x2)
234600 -16 1483  FS4WBS R8CEG MO06 (x2)

20m

UTC    dB Audio  Message
180230 -15  276  FS4WBS YT7DX -06
180230 -17 2178  FS4WBS CT2FEY IN50
180430  +5 2749  FS4WBS IW4AOT -12 (x2)
180530  +7  397  FS4WBS CT2FEY IN50 (x2)
180630  -5 2579  FS4WBS IK2TPX JN45
180630  +0  398  FS4WBS CT2FEY 73
180700  -3 2579  FS4WBS IK2TPX JN45 (x4)
181100 -14 2323  FS4WBS IZ4CMT JN54
181100 -22 1874  FS4WBS EA1KCN IN53
181130 -12 2323  FS4WBS IZ4CMT JN54

10m

UTC    dB Audio  Message
190945 -19 2008  FS4WBS G1HWY IO90
191915 -24 1915  FS4WBS F4BHK JN08 (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.

FT8DB and SO8OO WebSDR are a hobby project maintained solo. ☕ Buy me a coffee