SP4FEU — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Poland Most frequent locator attributed to this token: KO13

Receiver-side FT8 activity involving SP4FEU, decoded by SO8OO in southeastern Poland. 54 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, across 9 UTC dates in the available aggregate history. Observed between 2026-06-25 and 2026-09-21.

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 54 FT8 messages attributed to SP4FEU as the transmitting token by decoded message structure across 9 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (67%), followed by 40 m (20%) and 20 m (13%). Most decodes (69%) fell within the six-hour window 03:00-09:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (80%); the estimated median was 0 dB.

Overview

54
Messages attributed
9
UTC dates decoded
17
Active 15-min windows
0 dB
Estimated median S/N

Bands

80m · 36 40m · 11 20m · 7
First attributed message: 2026-06-25
Last attributed message: 2026-09-21 05:48 UTC

Observed FT8 message patterns

Attributed sample
54 messages
Active dates
9 UTC dates
Estimated median S/N
0 dB
Estimated 10th-90th percentile
-12 to +12 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 2, moderate (-15 to -9 dB) 9, strong (≥ -8 dB) 43.

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 SP4FEU in decoded directed-looking exchanges:

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 SP4FEU

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
KO13 · 34 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
405 km (approx.)
Last such locator decoded
2026-09-21 05:46 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 UTCBandSP4FEU S/NCounterpartCounterpart S/NMsgsCapture
09-21 05:46 80m +8 / -5 SN100PKP +9 / -15 6 Partial capture
09-21 05:43 40m -10 / - SN100PKP - / -3 2 Partial capture
09-12 03:41 80m +4 / - YV6BXN - / - 2 Partial capture
09-08 05:36 80m +7 / -10 SP9PEZ +12 / - 3 ✓ Closing observed
09-08 05:31 80m +7 / +1 SN40KZE -13 / -4 3 Partial capture
09-08 04:14 40m - / -11 Z68BR -18 / - 2 Partial capture
09-08 04:06 80m +6 / - YV6BXN - / - 2 Partial capture
09-08 04:05 80m +13 / - 7X5CY -4 / -15 4 ✓ Closing observed
09-08 04:03 80m +2 / -6 GU4WRP -6 / -7 5 ✓ Full exchange observed
09-03 04:59 40m -8 / - 3Z100PKP - / -9 2 Partial capture
09-02 04:01 40m - / -18 PV8AJ -14 / - 3 ✓ Closing fragment
09-02 03:54 80m - / +2 ON1JP -14 / - 4 Partial capture
09-02 03:51 80m +1 / -3 IR7MGGC -1 / -4 4 Partial capture
09-02 03:49 80m +10 / +7 HF100PKP +10 / - 3 Partial capture
09-01 10:09 40m -14 / - HF100PKP - / - 2 Partial capture
09-01 10:07 40m -14 / - DM2DS/P - / - 2 Partial capture
09-01 09:02 40m -4 / -7 SQ100PKP -8 / -12 2 Partial capture
08-27 05:36 20m - / -8 AD9GE -14 / - 7 ✓ Closing fragment
07-23 08:46 20m -10 / - <...> - / -11 3 Partial capture
07-23 08:34 20m -6 / - TI5RR - / - 4 Partial capture
07-06 13:47 10m - / - R2BRD -20 / - 2 ✓ Closing fragment
07-06 13:46 10m - / -7 F1NZC -19 / - 2 ✓ Closing fragment
06-25 18:30 80m +10 / - R2ATY - / -9 2 ✓ Closing fragment
06-25 18:25 80m - / -11 R2ATY -16 / - 3 Partial capture
06-25 18:24 80m +13 / +3 SP4JAN +14 / +3 6 ✓ Full exchange observed
06-24 16:38 10m - / +1 PD0HLA -3 / - 2 ✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

80m 
UTC    dB Audio  Message
053200 -13 1347  SP4FEU SN40KZE +01
053215  +9 1347  SN40KZE SP4FEU R-04
053645 +13 1588  SP4FEU SP9PEZ -10 (x2)
053730  +7 1587  SP9PEZ SP4FEU 73
034115  +4 1410  YV6BXN SP4FEU KO13 (x3)
054615 +10 1443  SN100PKP SP4FEU KO13
054630  +9 1443  SP4FEU SN100PKP -05
054645 +11 1443  SN100PKP SP4FEU R-15 (x4)
054830  +8 1443  SP4FEU RR73; SP2TMT <...> -14
40m 
UTC    dB Audio  Message
100730 -13 1859  DM2DS/P SP4FEU KO13 (x2)
100900 -15 1859  <HF100PKP> SP4FEU KO13 (x2)
040145 -15 1345  SP4FEU PV8AJ -18 (x3)
072600  -9 1074  SP7WMI SP4FEU KO13
045900  -9 1297  3Z100PKP SP4FEU KO13 (x2)
041430 -17 1738  SP4FEU Z68BR -11 (x2)
054100  -7 2791  SP4FEU R1943OD -04
054315 -12 1383  SN100PKP SP4FEU KO13 (x2)
20m 
UTC    dB Audio  Message
083645  -6  906  TI5RR SP4FEU KO13
084600  -8 2590  <...> SP4FEU KO13 (x3)
080815 -18 2377  SP4FEU PD0WL JO21 (x2)
053645 -19 2069  SP4FEU AD9GE -08 (x7)
053745  -6 2943  SP4FEU VK3HA -14
054945 -11  628  SP4FEU VK4VCC RR73
10m 
UTC    dB Audio  Message
163815  -6 2555  SP4FEU PD0HLA +01 (x2)
134630 -20 1733  SP4FEU F1NZC -07 (x2)
134730 -20 1245  SP4FEU R2BRD KO85 (x2)

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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