SP9TNK — FT8 activity observed at SO8OO

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

Receiver-side FT8 activity involving SP9TNK, decoded by SO8OO in southeastern Poland. 21 FT8 messages attributed to this token as transmitter, on 20m, across 1 UTC dates in the available aggregate history. Last observed 2026-07-05.

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 21 FT8 messages attributed to SP9TNK as the transmitting token by decoded message structure across 1 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (100%). In this small sample, the estimated median decoder S/N was +5 dB; no usual signal pattern is inferred.

Overview

21
Messages attributed
1
UTC dates decoded
3
Active 15-min windows
+5 dB
Estimated median S/N

Bands

20m · 21
First attributed message: 2026-07-05
Last attributed message: 2026-07-05 09:08 UTC

Observed FT8 message patterns

Attributed sample
21 messages
Active dates
1 UTC dates
Estimated median S/N
+5 dB
Estimated 10th-90th percentile
-4 to +12 dB
Recurring-pattern threshold
Not met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 0, moderate (-15 to -9 dB) 0, strong (≥ -8 dB) 21.

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 SP9TNK in decoded directed-looking exchanges:

Most frequent locator attributed to SP9TNK

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 · 11 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
208 km (approx.)
Last such locator decoded
2026-07-05 09:07 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 UTCBandSP9TNK S/NCounterpartCounterpart S/NMsgsCapture
08-31 09:03 20m - / +10 2E0NBL -3 / - 3 Partial capture
08-28 09:04 20m - / -20 UA6AOP -6 / - 3 ✓ Closing fragment
08-28 09:02 20m - / -7 OE3EHS +8 / - 5 ✓ Closing fragment
08-28 08:42 20m - / -6 OE9NET -10 / - 2 ✓ Closing fragment
08-28 08:39 20m - / -11 PD2XX +4 / - 2 ✓ Closing fragment
08-28 08:37 20m - / 0 EA1FMJ +1 / - 2 Partial capture
08-27 08:20 20m - / - LZ7VV +6 / - 2 ✓ Closing fragment
08-16 10:29 20m - / -3 DL9KM -6 / - 3 ✓ Closing fragment
07-26 09:16 20m - / +4 RA6OY 0 / - 2 ✓ Closing fragment
07-26 09:06 20m - / -5 DL1HQN -13 / - 3 ✓ Closing fragment
07-25 08:27 20m - / +5 M7JVT -11 / - 2 ✓ Closing fragment
07-22 14:21 20m - / -10 UA3LRN -16 / - 2 Partial capture
07-22 13:54 20m - / -1 EC3A -16 / - 2 ✓ Closing fragment
07-19 10:19 20m - / -3 PE1MHY -22 / - 2 ✓ Closing fragment
07-19 10:18 20m - / +7 DL5RZ -13 / - 3 ✓ Closing fragment
07-16 07:22 20m - / -3 DL1UDO -15 / - 5 ✓ Closing fragment
07-16 07:22 20m - / - DL8WEM -12 / - 3 ✓ Closing fragment
07-16 07:16 20m - / +1 RZ4FWA -18 / - 4 ✓ Closing fragment
07-05 09:07 20m -4 / - <...> - / -6 2 Partial capture
07-05 08:56 20m -2 / -18 SP0ZKR -8 / -21 8 ✓ Full exchange observed
07-05 08:49 20m +6 / - SP9EKG - / - 2 ✓ Closing fragment
07-05 08:48 20m +7 / - DK3WH - / - 2 Partial capture
07-05 08:38 20m +12 / - F4IIX - / -18 2 ✓ Closing fragment
07-05 08:36 20m +7 / - PD0XTL -21 / -2 4 ✓ Closing observed

Recent FT8 messages decoded at SO8OO

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

20m 
UTC    dB Audio  Message
084000  +3 1820  SP9TNK PD2XX RR73
084230  -9  980  SP9TNK OE9NET -06 (x2)
084615  -3 1785  SP9TNK YT1VDA RR73
090245  +7 1785  SP9TNK OE3EHS JN87 (x4)
090445  -8 1216  SP9TNK UA6AOP KN95
090445  +5 1817  SP9TNK OE3EHS 73
090515  -4 1216  SP9TNK UA6AOP R-20 (x2)
090300  -3 1186  SP9TNK 2E0NBL +10 (x3)

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