SP1WK — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Poland Most frequent locator attributed to this token: JO73

Receiver-side FT8 activity involving SP1WK, decoded by SO8OO in southeastern Poland. 238 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, across 18 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-09-12.

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 238 FT8 messages attributed to SP1WK as the transmitting token by decoded message structure across 18 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (68%), followed by 40 m (29%) and 20 m (2%). Most decodes (83%) fell within the six-hour window 17:00-23:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -9.2 dB.

Overview

238

Messages attributed

UTC dates decoded

Active 15-min windows

-9.2 dB

Estimated median S/N

Bands

80m · 163 40m · 70 20m · 5

First attributed message: 2026-06-06
Last attributed message: 2026-09-12 20:06 UTC

Observed FT8 message patterns

Attributed sample: 238 messages
Active dates: 18 UTC dates
Estimated median S/N: -9.2 dB
Estimated 10th-90th percentile: -16 to -3 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 37, moderate (-15 to -9 dB) 96, strong (≥ -8 dB) 105.

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 SP1WK in decoded directed-looking exchanges:

9A4ZM · Croatia DK2FM · Fed. Rep. of Germany SP1AKA · Poland SP5ROM · Poland SP7DE · Poland SQ9AWN · Poland SQ9MEZ · Poland DL7UVO · Fed. Rep. of Germany DO8BFW · Fed. Rep. of Germany F5RRS · France PC2K · Netherlands SP2GKG · Poland

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 SP1WK

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: JO73 · 181 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 613 km (approx.)
Last such locator decoded: 2026-09-12 20:06 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	SP1WK S/N	Counterpart	Counterpart S/N	Msgs	Capture
08-29 19:47	80m	- / +8	SQ7SE	+10 / -	5	Partial capture
08-29 19:31	80m	+3 / -4	SQ7SE	+5 / -	2	Partial capture
07-22 17:12	40m	-8 / -	VK5ARG	- / -	2	Partial capture
07-21 19:18	80m	-8 / -	SP9CXN	- / -	2	Partial capture
07-21 19:05	80m	-3 / -	SP9CXN	- / -	10	Partial capture
07-19 19:25	80m	-2 / -9	OZ0QF	-6 / -	7	Partial capture
07-19 19:23	80m	-9 / -	SQ9MEZ	- / -	3	Partial capture
07-19 19:21	80m	-5 / -	SQ9AWN	- / -	4	Partial capture
07-19 19:18	80m	- / -	HA5LB	0 / -	3	Partial capture
07-19 19:17	80m	-5 / -	SQ9AWN	- / -	3	Partial capture
07-19 19:06	80m	-8 / -	SQ9AWN	- / -	2	Partial capture
07-19 18:57	80m	-10 / -	SQ9AWN	- / -	8	Partial capture
07-19 15:59	40m	- / -6	SP7DE	-20 / -	4	✓ Closing fragment
07-19 13:01	40m	- / +6	SQ9AWN	-9 / -	2	✓ Closing fragment
07-18 19:55	80m	- / -	SQ2BXJ	-10 / -	4	Partial capture
07-10 22:17	80m	-9 / -19	F5RRS	+1 / -8	7	✓ Full exchange observed
07-10 22:17	80m	- / -	UA4FKT	+10 / -	3	Partial capture
07-10 22:16	80m	-15 / -11	SP7CWZ	+3 / -5	4	✓ Full exchange observed
07-10 22:12	80m	-10 / -4	SP7VCL	+14 / +7	7	✓ Full exchange observed
07-10 22:02	40m	- / -3	SP1AKA	-9 / -	3	✓ Closing fragment
07-10 21:57	40m	-17 / -22	OE5ROR	-10 / +9	7	Partial capture
07-10 21:56	40m	-18 / -11	RN6MA	-13 / +2	4	Partial capture
07-10 21:50	40m	- / 0	9A4ZM	-5 / -	3	✓ Closing fragment
07-10 21:27	80m	-10 / -	SQ5EKY	+14 / +6	4	✓ Closing observed
07-10 21:12	40m	-11 / -5	PC2J	-6 / +2	2	Partial capture
07-10 21:07	40m	-10 / -	SP6FME	- / +3	2	Partial capture
07-10 21:03	40m	-8 / -5	DK2FM	+8 / -5	4	✓ Full exchange observed
07-10 21:01	40m	-7 / -	SQ8AZT	- / -	4	Partial capture
07-10 21:00	40m	- / -10	DK2FM	0 / -	2	Partial capture
07-10 20:43	80m	-7 / -	SQ8AZT	- / -	5	Partial capture
07-04 19:52	80m	-2 / -11	DO8BFW	-15 / -13	6	✓ Full exchange observed
07-04 19:51	80m	-7 / +5	SP2GKG	+4 / +8	5	✓ Full exchange observed
07-04 19:48	80m	-4 / -	PC2K	-24 / -10	3	✓ Closing observed
07-04 19:44	80m	- / -	DN4TG	+5 / -	5	Partial capture
07-04 19:44	80m	-9 / -	SQ8V	- / -	6	Partial capture
07-04 19:19	80m	-11 / -	DL7UVO	+3 / -	2	✓ Closing observed
07-04 19:17	80m	-12 / -	SQ8V	- / -	4	Partial capture
06-26 20:42	40m	-14 / -	SP5ROM	- / -	8	Partial capture
06-25 19:00	80m	-7 / -	SP5ROM	- / -	7	Partial capture
06-25 18:48	80m	-8 / -	SQ7SE	- / -8	3	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
211545 -23 1723  SP7VCL SP1WK JO73
130130  -8 1535  SP1WK SQ9AWN +06 (x2)
132600 -18 1134  SQ9MEZ SP1WK 73
155915 -24 1738  SP1WK SP7DE JO92 (x4)
160800 -20 1137  M7CWF SP1WK JO73
170615  -7  827  SP5RZL SP1WK R+05
171115 -11 1033  CQ SP1WK JO73
171215  -7 1033  VK5ARG SP1WK JO73 (x2)
171900  +4 2806  SP1WK IQ4JO JN63
200615  -4  734  SQ7SE SP1WK JO73

80m

UTC    dB Audio  Message
190715  +1  792  SP9CXN SP1WK JO73 (x8)
193145  +3  998  SQ7SE SP1WK JO73
193200  +5  785  SP1WK SQ7SE -04 (x6)

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