SP1LON — FT8 activity observed at SO8OO

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

Receiver-side FT8 activity involving SP1LON, decoded by SO8OO in southeastern Poland. 299 FT8 messages attributed to this token as transmitter, on 60m, 40m, 20m, 10m, across 26 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-09-06.

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 299 FT8 messages attributed to SP1LON as the transmitting token by decoded message structure across 26 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (71%), followed by 40 m (22%) and 10 m (4%). Most decodes (51%) fell within the six-hour window 16:00-22:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (79%); the estimated median was -2 dB.

Overview

299

Messages attributed

UTC dates decoded

Active 15-min windows

-2 dB

Estimated median S/N

Bands

60m · 7 40m · 66 20m · 213 10m · 13

First attributed message: 2026-06-06
Last attributed message: 2026-09-06 17:27 UTC

Observed FT8 message patterns

Attributed sample: 299 messages
Active dates: 26 UTC dates
Estimated median S/N: -2 dB
Estimated 10th-90th percentile: -11 to +5 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 6, moderate (-15 to -9 dB) 58, strong (≥ -8 dB) 235.

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 SP1LON in decoded directed-looking exchanges:

E75W · Bosnia-Herzegovina EA8UP · Canary Islands IU1LEB · Italy IU7VOL · Italy IW2NEF · Italy IZ7UIU · Italy LZ2VQ · Bulgaria OH3OJ · Finland SV1CQN · Greece SV2CLJ · Greece TA1SW · European Turkey DL5JW · Fed. Rep. of Germany

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 SP1LON

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: 2026-09-06 17:27 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	SP1LON S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-06 17:25	40m	+7 / -	VJ6X	- / -	5	Partial capture
08-31 10:22	20m	- / 0	9A6NTK	+11 / -	6	Partial capture
08-31 09:13	20m	-12 / -	RI1FJL	- / -	7	Partial capture
08-31 09:10	20m	-11 / -13	G6MVF	-12 / -13	5	✓ Full exchange observed
08-31 09:08	20m	-14 / -5	EA7R	+11 / -3	3	✓ Full exchange observed
08-31 09:04	20m	- / -5	F1BHB	+2 / -	4	Partial capture
08-31 08:59	20m	-9 / -	RI1FJL	- / -	2	Partial capture
08-29 21:31	60m	- / -12	ER3UA	-2 / -	2	Partial capture
08-29 21:21	40m	- / -4	F1PBZ	-4 / -	3	Partial capture
08-29 19:29	20m	- / +5	YO3RU	0 / -	2	Partial capture
08-28 19:54	20m	-10 / -	K4DND	- / -	2	Partial capture
08-28 19:41	20m	- / -	F4IBJ	-6 / -	2	Partial capture
08-28 18:37	20m	- / -	F4MVU	+1 / -	2	Partial capture
08-23 07:05	20m	+2 / -	N8HRZ	- / -14	2	✓ Closing fragment
08-20 16:56	20m	+2 / -6	F5RMK	+2 / -18	5	✓ Full exchange observed
08-18 21:55	60m	+4 / -1	OR7K	-1 / -4	5	✓ Full exchange observed
08-18 21:07	40m	- / -10	GW0ARK	+5 / -	3	✓ Closing fragment
08-18 20:59	40m	-15 / -	GM4CXF	- / -9	2	✓ Closing fragment
08-16 21:04	20m	-7 / +10	F4GRW	-16 / -1	3	✓ Full exchange observed
08-16 21:03	20m	-5 / -	JA4DND	- / -	2	✓ Closing fragment
08-15 18:48	20m	- / -	F5NNN	-10 / -	7	Partial capture
08-14 11:58	10m	- / -6	LZ2IP	-12 / -	4	Partial capture
08-13 22:31	20m	- / -16	VE3ARF	-7 / -	3	✓ Closing fragment
08-13 09:17	10m	- / -16	SV7BAY	-11 / -	3	Partial capture
08-13 09:13	10m	- / -6	SV1CQN	-6 / -	2	✓ Closing fragment
08-12 20:06	60m	-11 / -	HA5AZD	- / -	3	Partial capture
08-12 06:55	20m	- / -6	ON3BEN	-14 / -	2	✓ Closing fragment
08-12 06:16	20m	0 / -	F6IJT	- / -	6	Partial capture
08-11 18:29	10m	- / -16	EA8UP	-5 / -	3	✓ Closing fragment
08-11 18:15	10m	- / 0	IZ7UIU	-13 / -	2	✓ Closing fragment
08-11 11:55	20m	- / -19	<...>	-22 / -	4	Partial capture
08-10 22:19	20m	-4 / -	AJ4OA	- / -11	3	Partial capture
08-10 22:16	20m	-4 / -	KC1TEM	- / -13	4	Partial capture
08-10 22:13	20m	-4 / -	K4KWZ	- / -10	3	Partial capture
08-10 21:53	20m	-1 / -	AB4KK	- / -16	4	Partial capture
08-10 21:51	20m	-2 / -	WD4OOZ	- / -11	2	✓ Closing fragment
08-10 20:31	20m	- / -1	EA3NE	+8 / -	2	Partial capture
08-10 06:53	20m	+3 / -	LA2PIA	- / -12	4	✓ Closing fragment
08-09 21:23	20m	- / -10	VE2JD	-17 / -	3	✓ Closing fragment
08-09 21:14	20m	- / -	EA5HM	-17 / -	2	Partial capture
08-09 21:10	20m	- / -7	<...>	-9 / -	3	Partial capture
08-09 13:53	10m	- / -15	IU2EBR	-7 / -	3	Partial capture
08-09 11:48	10m	- / -14	TA1SW	-23 / -	2	✓ Closing fragment
08-09 11:46	10m	- / 0	IW2NEF	-8 / -	2	✓ Closing fragment
08-09 11:17	10m	- / -12	LZ2VQ	-14 / -	3	✓ Closing fragment
08-07 20:59	20m	- / -7	R4FDW	-18 / -	2	Partial capture
08-06 10:53	10m	- / -15	F1PBZ	+5 / -	2	Partial capture
08-05 22:32	20m	-10 / -	KE9AYZ	- / -	3	Partial capture
08-05 22:26	20m	-8 / -	BI4XDT	- / -	2	Partial capture
08-05 22:14	20m	-11 / -9	N8HRZ	-8 / -	3	Partial capture

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
210700  +5 2853  SP1LON GW0ARK -10 (x3)
211945 -10 2695  <...> SP1LON JO73
211830 -19 1828  EA5JXP SP1LON -10
212100 -19 1828  CQ SP1LON JO73
212145  -7 2785  SP1LON F1PBZ -04 (x2)
212230 -22 1828  CQ SP1LON JO73
212245  -1 2785  SP1LON F1PBZ -04
172500  +1 2781  VJ6X SP1LON JO73 (x5)

20m

UTC    dB Audio  Message
091115 -12 2993  G6MVF SP1LON R-13
091130 -14 2331  SP1LON G6MVF RR73
091345 -11 2994  RI1FJL SP1LON JO73 (x7)
102230 +10 2225  SP1LON 9A6NTK +00 (x6)

60m

UTC    dB Audio  Message
200645  -8 2509  HA5AZD SP1LON JO73 (x3)
215545  +5 2689  OR7K SP1LON JO73
215600  -4 2031  SP1LON OR7K -01
215615  +5 2689  OR7K SP1LON R-04
215630  +2 2031  SP1LON OR7K RR73
215645  +3 2689  OR7K SP1LON 73
213115  +1 2228  SP1LON ER3UA -12
213115 -15 1940  ER1CW SP1LON JO73
213145  -4 2228  SP1LON ER3UA -12
213330 -18 1688  SP1LON ER1CW -14

10m

UTC    dB Audio  Message
181545  -9 1274  SP1LON IZ7UIU +00 (x2)
182900  -7 1213  SP1LON EA8UP -16 (x3)
091315  -3  978  SP1LON SV1CQN -06 (x2)
091715 -17 1308  SP1LON SV7BAY -16 (x3)
115815 -11 1383  SP1LON LZ2IP -06 (x4)
084715 -23 1405  SP1LON IZ5VTJ -09

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.

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