SP9PLK — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Poland Most frequent locator attributed to this token: JO90

Receiver-side FT8 activity involving SP9PLK, decoded by SO8OO in southeastern Poland. 73 FT8 messages attributed to this token as transmitter, on 40m, 20m, across 4 UTC dates in the available aggregate history. Observed between 2026-06-08 and 2026-10-02.

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 73 FT8 messages attributed to SP9PLK as the transmitting token by decoded message structure across 4 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (82%), followed by 20 m (18%). Most decodes (100%) fell within the six-hour window 13:00-19:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's moderate S/N range (60%); the estimated median was -11 dB.

Overview

73
Messages attributed
4
UTC dates decoded
11
Active 15-min windows
-11 dB
Estimated median S/N

Bands

40m · 60 20m · 13
First attributed message: 2026-06-08
Last attributed message: 2026-10-02 18:25 UTC

Observed FT8 message patterns

Attributed sample
73 messages
Active dates
4 UTC dates
Estimated median S/N
-11 dB
Estimated 10th-90th percentile
-15 to -3 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 7, moderate (-15 to -9 dB) 44, strong (≥ -8 dB) 22.

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 SP9PLK in decoded directed-looking exchanges:

Most frequent locator attributed to SP9PLK

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
JO90 · 39 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
208 km (approx.)
Last such locator decoded
2026-10-02 18:11 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 UTCBandSP9PLK S/NCounterpartCounterpart S/NMsgsCapture
10-02 18:22 40m - / -8 EB3JT -5 / - 4 ✓ Closing fragment
10-02 18:14 40m - / -4 EA2FGV -15 / - 2 ✓ Closing fragment
10-02 18:11 40m -19 / -6 I2LAX -10 / -10 4 ✓ Full exchange observed
10-02 18:02 40m -10 / - OZ2LC - / -6 3 ✓ Closing fragment
10-02 17:59 40m -7 / - BI4IWL - / - 3 ✓ Closing fragment
10-02 17:57 40m -12 / - EC1ABR - / -15 4 ✓ Closing fragment
10-02 17:56 40m -14 / - RT3K - / - 2 ✓ Closing fragment
10-02 17:52 40m -8 / - VJ6X - / -13 2 Partial capture
10-02 17:50 40m -13 / - PD3LR -15 / -7 2 Partial capture
10-02 17:47 40m -12 / -1 R3DHP -1 / -1 6 ✓ Full exchange observed
10-02 17:46 40m -9 / +10 IN3EZU -4 / -4 4 ✓ Full exchange observed
10-02 17:44 40m -11 / +6 R3PMV -9 / - 4 ✓ Closing observed
10-02 17:43 40m -12 / - F3CJ - / -9 2 ✓ Closing fragment
10-02 17:41 40m -14 / -8 US1MM -7 / +1 5 ✓ Full exchange observed
10-02 17:38 40m - / - IZ4AIF +8 / - 2 ✓ Closing fragment
10-02 17:34 40m -10 / +7 F6FHZ -9 / -6 5 ✓ Full exchange observed
10-02 17:29 40m -17 / +1 DL9KM -1 / -1 4 ✓ Full exchange observed
10-02 17:27 40m -12 / 0 YO9HP +4 / - 3 ✓ Closing observed
10-02 17:26 40m - / - PE1NPS -1 / - 3 Partial capture
10-02 17:25 40m - / 0 UX7QV -3 / - 3 ✓ Closing fragment
10-02 17:23 40m -16 / -3 F5PBG -6 / -12 7 ✓ Full exchange observed
10-02 17:21 40m -11 / +1 DL3IAK -6 / - 7 ✓ Closing observed
10-02 17:20 40m - / - OE8PIT -6 / - 2 Partial capture
10-02 17:18 40m -11 / +2 DL6EL -5 / - 6 ✓ Closing observed
10-02 17:18 40m -15 / +2 UR3CFC +7 / - 4 ✓ Closing observed
10-02 17:17 40m -1 / - OE5ROR +6 / -1 5 ✓ Full exchange observed
08-20 16:38 20m - / -5 DL3HBF -3 / - 2 ✓ Closing fragment
07-08 16:41 20m - / -19 <...> -17 / - 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
180315 -13  597  OZ2LC SP9PLK 73
180415 -14  989  M6ILA SP9PLK JO90
181145 -19 1542  I2LAX SP9PLK JO90
181200 -10 1541  SP9PLK I2LAX -06
181215 -19 1542  I2LAX SP9PLK R-10
181230 -11 1541  SP9PLK I2LAX RR73
181400 -15 1139  SP9PLK EA2FGV -04 (x2)
182015 -22 1633  7Z1FJ SP9PLK R-15
182230  -4 2743  SP9PLK EB3JT JN01 (x4)
182515  -9  463  UB3ADO/P SP9PLK 73
182530 -12  463  SP9PLK LZ2VQ KN23
20m 
UTC    dB Audio  Message
164100 -16 1724  SP9PLK <...> -19 (x2)
163845 -16  520  SP9PLK DL3HBF -05 (x2)
164215  -6 2685  SP9PLK 4L1MA -07
102015  +3  848  SP9PLK EN35UKR -06

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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