SP8SML — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Poland Most frequent locator attributed to this token: KO10

Receiver-side FT8 activity involving SP8SML, decoded by SO8OO in southeastern Poland. 26 FT8 messages attributed to this token as transmitter, on 40m, across 2 UTC dates in the available aggregate history. Observed between 2026-09-18 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 26 FT8 messages attributed to SP8SML as the transmitting token by decoded message structure across 2 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (100%). In this small sample, the estimated median decoder S/N was -11 dB; no usual signal pattern is inferred.

Overview

26
Messages attributed
2
UTC dates decoded
4
Active 15-min windows
-11 dB
Estimated median S/N

Bands

40m · 26
First attributed message: 2026-09-18
Last attributed message: 2026-09-19 12:20 UTC

Observed FT8 message patterns

Attributed sample
26 messages
Active dates
2 UTC dates
Estimated median S/N
-11 dB
Estimated 10th-90th percentile
-22 to -9 dB
Recurring-pattern threshold
Not met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 8, moderate (-15 to -9 dB) 18, strong (≥ -8 dB) 0.

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. The sample does not meet the threshold for a recurring time or signal-pattern claim (20 attributed messages, three UTC dates and five distinct 15-minute windows).

Frequent counterpart tokens observed at SO8OO

Tokens most often paired with SP8SML in decoded directed-looking exchanges:

Most frequent locator attributed to SP8SML

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
KO10 · 11 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
106 km (approx.)
Last such locator decoded
2026-09-19 12:18 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 UTCBandSP8SML S/NCounterpartCounterpart S/NMsgsCapture
09-19 12:17 40m -10 / -18 IK0CHU -18 / -15 8 ✓ Full exchange observed
09-19 12:11 40m -10 / -8 SP3DVO -12 / -6 12 ✓ Full exchange observed
09-19 12:09 40m -9 / -12 SQ100PKP 0 / - 3 Partial capture
09-18 11:41 40m - / +4 SP9AU -9 / - 3 ✓ Closing fragment
09-18 11:34 40m -24 / -14 SP3EIE -10 / -4 5 Partial capture
09-18 11:31 40m -20 / -18 9A4ZM -3 / -2 4 Partial capture
09-15 11:18 40m - / - SQ9LGF -5 / - 6 Partial capture
09-15 11:18 40m - / -6 HA7TM +11 / - 4 ✓ Closing fragment
09-15 11:17 40m - / +1 HG8LXL -7 / - 6 ✓ Closing fragment
09-09 06:18 40m - / -22 E75FM -14 / - 10 Partial capture
09-09 06:15 40m - / -15 HG0NPJ 0 / - 3 ✓ Closing fragment
09-09 06:09 40m - / -3 HG0NPJ -2 / - 4 Partial capture
09-09 06:08 40m - / - OE5PEN -2 / - 2 Partial capture
09-02 06:57 40m - / - 9A4ZM +13 / - 3 Partial capture
08-11 11:53 20m - / -8 G0GHL -8 / - 3 ✓ Closing fragment
08-11 11:20 20m - / -9 IQ4JO -8 / - 2 ✓ Closing fragment
08-11 11:14 20m - / -14 YT2TOR -9 / - 4 Partial capture
08-11 11:11 20m - / -17 DF3IS -6 / - 2 ✓ Closing fragment
08-11 11:07 20m - / - GJ0KYZ -4 / - 3 ✓ Closing fragment
08-11 11:03 20m - / - GJ0KYZ -3 / - 2 Partial capture
08-11 11:01 20m - / -7 LZ1ZF -16 / - 2 ✓ Closing fragment
08-05 18:44 40m - / - SP3IPA -10 / - 2 Partial capture
08-01 18:03 20m - / -20 RY7G +9 / - 3 ✓ Closing fragment
08-01 17:24 20m - / - IU0IKZ -10 / - 2 ✓ Closing fragment
08-01 17:20 20m - / - IU0IKZ -18 / - 4 Partial capture
08-01 16:50 20m - / - RX3ASQ -16 / - 2 Partial capture
08-01 16:24 20m - / - DL1R -2 / - 8 Partial capture
08-01 16:22 20m - / - F5PBG -12 / - 2 Partial capture
08-01 16:05 20m - / -23 <...> +3 / - 2 Partial capture
07-16 10:27 20m - / -14 LZ1BT -11 / - 3 Partial capture
07-16 10:17 20m - / -10 OE6HTG -14 / - 3 ✓ Closing fragment
07-11 19:15 40m - / -16 <...> -8 / - 2 Partial capture
07-10 18:38 20m - / -15 <...> -11 / - 4 Partial capture
07-10 17:31 20m - / -11 <...> -15 / - 5 Partial capture
07-10 16:33 20m - / -21 <...> -9 / - 2 Partial capture
07-10 15:13 40m - / -20 DK8EW -8 / - 2 Partial capture
07-10 15:06 20m - / - F5RRS -19 / - 2 Partial capture
07-10 14:11 20m - / - EA5RJ -10 / - 3 ✓ Closing fragment
07-08 12:15 40m - / -14 SQ8LE -12 / - 2 ✓ Closing fragment
07-07 10:49 20m - / - DL3MIB -9 / - 3 ✓ Closing fragment
06-25 07:06 20m - / -10 YU5DR -20 / - 7 Partial capture
06-25 07:03 20m - / -9 YO6OGW -5 / - 8 Partial capture
06-25 06:45 40m - / -6 UT4PA -9 / - 5 ✓ Closing fragment
06-25 06:17 20m - / -15 OE/WE9G -7 / - 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
121500 -11 1275  SP3DVO SP8SML RRR (x3)
121630 -10 1275  CQ SP8SML KO10 (x3)
121745 -16 1328  SP8SML IK0CHU JN62
121800  -9 1275  CQ SP8SML KO10
121830 -11 1275  IK0CHU SP8SML -15
121845 -22 1328  SP8SML IK0CHU JN62
121900 -10 1275  IK0CHU SP8SML -11
121945 -16 1328  SP8SML IK0CHU -18
122000 -11 1328  IK0CHU SP8SML R-08
122015 -19 1328  SP8SML IK0CHU RR73
122030 -10 1328  IK0CHU SP8SML 73
20m 
UTC    dB Audio  Message
110745  -4 1138  SP8SML GJ0KYZ IN89 (x2)
111115  -6 1137  SP8SML DF3IS R-17 (x2)
111445  -5 2233  SP8SML YT2TOR -14 (x4)
112045 -11 1952  SP8SML IQ4JO R-09 (x2)
113130 -12  828  SP8SML F5MXH JN07
115330  -8 2319  SP8SML G0GHL IO82 (x3)
131730 -15 2167  SP8SML RW3QW -15

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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