SP3SLA — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Poland Most frequent locator attributed to this token: JO83

Receiver-side FT8 activity involving SP3SLA, decoded by SO8OO in southeastern Poland. 975 FT8 messages attributed to this token as transmitter, on 160m, 80m, 40m, 20m, across 26 UTC dates in the available aggregate history. Observed between 2026-06-07 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 975 FT8 messages attributed to SP3SLA as the transmitting token by decoded message structure across 26 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (49%), followed by 40 m (36%) and 20 m (9%). Most decodes (78%) fell within the six-hour window 22:00-04:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (79%); the estimated median was +8 dB.

Overview

975

Messages attributed

UTC dates decoded

100

Active 15-min windows

+8 dB

Estimated median S/N

Bands

160m · 55 80m · 476 40m · 353 20m · 91

First attributed message: 2026-06-07
Last attributed message: 2026-09-12 16:51 UTC

Observed FT8 message patterns

Attributed sample: 975 messages
Active dates: 26 UTC dates
Estimated median S/N: +8 dB
Estimated 10th-90th percentile: -12 to +19 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 37, moderate (-15 to -9 dB) 168, strong (≥ -8 dB) 770.

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 SP3SLA in decoded directed-looking exchanges:

F1ODM · France ×2 UT2AU · Ukraine ×2 EB3JT · Spain ×2 DL9KM · Fed. Rep. of Germany ×2 UA0LQE · Asiatic Russia ×2 KF9UG · United States ×2 N9JR · United States ×2 KC9IVQ · United States ×2 VP8A · Falkland Islands ×2 UA4FKT · European Russia ×2 W1C · United States ×2 KT4ZG · United States ×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 SP3SLA

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: JO83 · 486 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 515 km (approx.)
Last such locator decoded: 2026-09-12 16:50 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	SP3SLA S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-12 16:50	40m	+9 / -	E24WBO	- / -24	3	Partial capture
09-12 16:49	40m	- / -	RA6OY	+7 / -	4	Partial capture
09-12 16:45	40m	+10 / -	BI4IJT	- / -18	2	✓ Closing fragment
09-12 16:44	40m	- / +1	RY3F	-4 / -	2	Partial capture
09-12 16:43	40m	+8 / -	JH7XMO	- / -8	2	✓ Closing fragment
09-12 16:42	40m	- / +6	UA4FEN	-10 / -	2	Partial capture
09-12 16:41	40m	+8 / -	YB2CPO	- / -3	2	✓ Closing fragment
09-12 16:37	40m	+9 / -	BH8NNU	- / -14	5	✓ Closing fragment
09-12 16:35	40m	+8 / -	RV9WJP	- / -10	2	✓ Closing fragment
09-12 16:33	40m	+10 / -	BA7IWL	- / -19	3	✓ Closing fragment
09-12 16:33	40m	- / -	G7LHK	-22 / -	3	Partial capture
09-12 16:31	40m	+6 / -	BG3NQT	- / -24	2	Partial capture
09-12 16:31	40m	- / +9	UA4FEN	-5 / -	2	Partial capture
09-12 16:30	40m	+8 / -	IN3LHF	-11 / -13	3	✓ Closing observed
09-12 03:07	40m	- / +4	RK4FF	-10 / -	2	Partial capture
09-07 02:34	160m	+12 / -6	G8OO	-23 / -11	4	✓ Full exchange observed
09-07 02:31	160m	+13 / -3	UA4FKT	-12 / -4	5	✓ Full exchange observed
09-07 02:31	160m	+10 / -4	UT5ZC	+9 / -	8	✓ Full exchange observed
09-07 02:30	160m	+11 / +3	R5AV	-5 / +7	4	✓ Full exchange observed
09-07 02:21	80m	+8 / -	PR7AR	- / -24	2	✓ Closing fragment
09-07 02:20	80m	- / -	DL1UDO	-7 / -	5	Partial capture
09-07 02:17	80m	+9 / -	LU7HW	- / -17	3	✓ Closing fragment
09-07 02:15	80m	+9 / -	R9WCK	-22 / -16	4	✓ Closing observed
09-07 02:13	80m	+10 / -	HJ4MMO	-22 / -14	3	✓ Closing observed
09-07 02:11	80m	+11 / -	N1KSY	- / -20	3	✓ Closing fragment
09-07 02:10	80m	+11 / -	HI3A	-13 / -11	3	✓ Closing observed
09-07 02:08	80m	+12 / -	TI2SD	- / -10	4	Partial capture
09-07 02:02	40m	-10 / -	N1NRL	- / -3	3	Partial capture
09-07 02:00	40m	-10 / -	AD0CH	- / -18	2	✓ Closing fragment
09-07 01:59	40m	-10 / -	AI4FR	- / -1	2	✓ Closing fragment
09-07 01:57	40m	-10 / -	KN7AHS	- / -24	4	Partial capture
09-07 01:54	40m	-10 / -	AC9C	- / +2	2	✓ Closing fragment
09-07 01:52	40m	-9 / -	KC9FHA	- / -22	3	✓ Closing fragment
09-07 01:46	40m	-10 / -	AB9PM	- / -21	3	✓ Closing fragment
09-07 01:44	40m	-10 / -	KC9RXM	- / -6	2	✓ Closing fragment
09-07 01:42	40m	-10 / -	KB3HJC	- / -10	2	✓ Closing fragment
09-07 01:41	40m	- / -	F4BYA	+10 / -	6	Partial capture
09-07 01:39	40m	-9 / -	W4NHJ	- / -13	4	✓ Closing fragment
09-07 01:36	40m	-8 / -	VE3QDA	- / -8	2	✓ Closing fragment
09-07 01:32	40m	-9 / -	AE0PB	- / -5	2	✓ Closing fragment
09-07 01:28	40m	-8 / -	KJ5OIL	- / -7	2	✓ Closing fragment
09-07 01:27	40m	-6 / -	KE8EZB	- / -7	2	✓ Closing fragment
09-07 01:25	40m	-8 / -	KA4KHG	- / -18	2	✓ Closing fragment
09-07 01:23	40m	-7 / -	KQ4MDM	- / -9	2	✓ Closing fragment
09-07 01:22	40m	-12 / -	KX4TKO	- / -3	2	✓ Closing fragment
09-07 01:21	40m	-10 / -	KE8SYP	- / -6	2	✓ Closing fragment
09-07 01:21	40m	- / -	F4BYA	+12 / -	3	Partial capture
09-07 01:21	40m	- / -	SP5EXA	-3 / -	5	Partial capture
09-07 01:18	40m	-15 / -	YN1ZGN	- / -13	3	✓ Closing fragment
09-07 01:17	40m	-12 / -	KI5HXK	- / -15	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
164715  +6 1870  CQ DX SP3SLA JO83 (x4)
164900 +11  327  SP3SLA RA6OY KN88
164915  +8 1870  CQ DX SP3SLA JO83
164930  +6  327  SP3SLA RA6OY KN88
164930 -20 1870  SP3SLA ON4AZM JO11
164945  +6 1870  CQ DX SP3SLA JO83
165000  +4  327  SP3SLA RA6OY KN88
165015  +5 1870  CQ DX SP3SLA JO83
165030  +6  327  SP3SLA RA6OY KN88
165045  +9 1870  E24WBO SP3SLA -24 (x3)

160m

UTC    dB Audio  Message
023145 +11 1158  SP3SLA UT5ZC KN57
023200 +12 1370  UA4FKT SP3SLA -04
023215  +4 1158  SP3SLA UT5ZC KN57
023215 -13 1372  SP3SLA UA4FKT R-03
023230 +14 1370  UA4FKT SP3SLA RR73
023245 +11 1158  SP3SLA UT5ZC KN57
023245  -9 1372  SP3SLA UA4FKT 73
023300 +10 1370  UT5ZC SP3SLA +14
023315 +11 1157  SP3SLA UT5ZC R-04
023330 +11 1370  UT5ZC SP3SLA RR73
023345  +7 1157  SP3SLA UT5ZC 73
023400 +13 1370  G8OO SP3SLA -11
023415 -22 1896  SP3SLA G8OO R-06
023430 +11 1370  G8OO SP3SLA RR73
023445 -24 1896  SP3SLA G8OO 73

80m

UTC    dB Audio  Message
021700  +3 2275  CQ DX SP3SLA JO83
021730 +10 2276  LU7HW SP3SLA -17 (x3)
021900  +8 2276  KB3PC SP3SLA -24
022000 +10 2276  W5MOT SP3SLA JO83
022030  +7 2276  CQ DX SP3SLA JO83
022045 +13 2276  SP3SLA DL1UDO JO31
022100 +12 2276  PR7AR SP3SLA -24 (x2)
022200  +9 2276  CQ DX SP3SLA JO83
022215 -16 2276  SP3SLA DL1UDO JO31 (x4)

10m

UTC    dB Audio  Message
082245 -21 1855  SP3SLA F5LHI JN33

20m

UTC    dB Audio  Message
150130 -12 2733  CQ SP3SLA JO83
150145 +12 2733  SP3SLA F1ODM +00 (x2)
150230 -11 2733  F1ODM SP3SLA RR73
150245 +18 2733  SP3SLA F1ODM 73
150300 -15 2733  UA3POG SP3SLA -09 (x3)
151445 +18 2733  SP3SLA F1ODM 73
063200  -5 2513  SP3SLA PD0PWH JO21 (x3)
063600  -1 2512  SP3SLA R7OV KN87 (x2)
064730 -14 1711  SP3SLA SV1EKI KM18

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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