SP3FNW — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Poland Most frequent locator attributed to this token: JO71

Receiver-side FT8 activity involving SP3FNW, decoded by SO8OO in southeastern Poland. 178 FT8 messages attributed to this token as transmitter, on 40m, 20m, across 18 UTC dates in the available aggregate history. Observed between 2026-06-07 and 2026-09-13.

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 178 FT8 messages attributed to SP3FNW as the transmitting token by decoded message structure across 18 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (69%), followed by 20 m (31%). Most decodes (67%) fell within the six-hour window 05:00-11:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's weak S/N range (71%); the estimated median was -18 dB.

Overview

178
Messages attributed
18
UTC dates decoded
48
Active 15-min windows
-18 dB
Estimated median S/N

Bands

40m · 123 20m · 55
First attributed message: 2026-06-07
Last attributed message: 2026-09-13 09:55 UTC

Observed FT8 message patterns

Attributed sample
178 messages
Active dates
18 UTC dates
Estimated median S/N
-18 dB
Estimated 10th-90th percentile
-24 to -10 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 127, moderate (-15 to -9 dB) 42, strong (≥ -8 dB) 9.

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 SP3FNW 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 SP3FNW

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
JO71 · 132 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
508 km (approx.)
Last such locator decoded
2026-09-13 09:55 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 UTCBandSP3FNW S/NCounterpartCounterpart S/NMsgsCapture
09-13 09:47 40m -18 / - DJ4TP - / -21 2 Partial capture
09-13 09:32 40m - / -7 DL3LBK -18 / - 2 Partial capture
09-13 09:10 40m - / -4 HA3RM -4 / - 3 ✓ Closing fragment
09-13 08:59 40m - / -14 SP7FID +9 / - 2 ✓ Closing fragment
09-13 08:13 40m -24 / -16 DL2VN -2 / -6 5 ✓ Full exchange observed
09-13 08:10 40m - / +9 SP2CG -5 / - 2 Partial capture
09-13 08:02 40m -20 / - DL1LKG - / -8 2 Partial capture
09-13 08:02 40m - / - F4BYA -4 / - 3 Partial capture
09-13 07:54 40m - / - F4BYA -8 / - 3 Partial capture
09-13 05:54 40m - / - F4BYA +3 / - 3 Partial capture
09-13 05:49 40m - / -9 HA3TBL 0 / - 3 ✓ Closing fragment
09-13 05:46 40m - / - F4BYA +4 / - 6 Partial capture
09-13 05:41 40m - / -15 F4LNM -11 / - 6 ✓ Closing fragment
09-13 05:40 40m - / - F4BYA +1 / - 3 Partial capture
09-13 04:16 40m - / -13 UA4FKT +4 / - 5 ✓ Closing fragment
09-13 04:12 40m - / +4 EB3JT -3 / - 3 ✓ Closing fragment
09-12 21:17 40m - / -24 PD0LBY -9 / - 5 ✓ Closing fragment
09-12 20:40 40m - / -10 PE2K -4 / - 2 Partial capture
09-12 20:19 40m - / -15 PA3EWP +2 / - 4 ✓ Closing fragment
09-12 19:50 40m - / -16 YO4NF -1 / - 3 ✓ Closing fragment
09-12 19:34 40m - / -11 PE1PEO -1 / - 3 ✓ Closing fragment
09-12 15:26 40m - / -16 PI4TX -18 / - 3 Partial capture
09-12 12:21 40m -16 / -15 SP7VCL -3 / - 4 ✓ Closing observed
09-12 12:05 40m -17 / - DL7FAI -11 / - 2 ✓ Closing observed
09-12 11:59 40m - / -14 PE1MHY -12 / - 2 ✓ Closing fragment
09-06 15:35 40m - / -17 DF8MH -8 / - 4 ✓ Closing fragment
09-05 22:42 40m - / -1 PA0KGB -7 / - 4 ✓ Closing fragment
09-05 05:50 40m - / - F4GUK +2 / - 2 Partial capture
09-05 05:47 40m - / -10 DK6WS -4 / - 3 Partial capture
09-04 20:09 40m - / -21 DL7VGU +13 / - 3 ✓ Closing fragment
08-30 12:35 40m - / -13 SQ9SET -8 / - 3 Partial capture
08-30 12:16 40m - / -26 DJ0BS -18 / - 2 Partial capture
08-30 12:13 40m - / - SP6TO +2 / - 2 Partial capture
08-30 12:02 40m - / - DL1FAM -16 / - 7 Partial capture
08-30 10:41 40m - / -13 SQ2NIG -21 / - 2 Partial capture
08-29 05:34 40m - / -12 F5HNQ -14 / - 5 ✓ Closing fragment
08-28 19:15 40m - / - PA1PXL -5 / - 3 Partial capture
08-25 07:57 20m - / - IK4JPP -10 / - 2 Partial capture
08-25 07:34 20m - / -13 OH3OJ -10 / - 3 Partial capture
08-24 10:30 20m - / - DL1R -2 / - 9 Partial capture
08-24 09:52 20m - / - PD0HLA -6 / - 5 Partial capture
08-24 09:36 20m - / -15 DH9DR +6 / - 2 ✓ Closing fragment
08-24 09:15 20m - / -9 PD1FS -7 / - 8 ✓ Closing fragment
08-24 08:49 20m - / -15 R3KCW -4 / - 4 ✓ Closing fragment
08-24 08:45 20m - / - PA0KGB -16 / - 3 Partial capture
08-24 08:37 20m - / - OE8PIT -4 / - 4 Partial capture
08-24 07:23 20m - / - E70SZ +2 / - 4 Partial capture
08-24 06:56 40m -21 / +4 OZ3AAF -11 / -4 5 ✓ Full exchange observed
08-24 06:33 40m -15 / - DL8DCM - / - 4 Partial capture
08-24 06:20 40m -19 / - DL8DCM - / -12 11 Partial capture

Recent FT8 messages decoded at SO8OO

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

40m 
UTC    dB Audio  Message
093230 -18 1346  SP3FNW DL3LBK R-07 (x2)
094045 -16 1346  CQ SP3FNW JO71 (x6)
094715 -20 1346  DJ4TP SP3FNW -21 (x3)
095345 -22 1347  CQ SP3FNW JO71 (x4)
20m 
UTC    dB Audio  Message
103100  +0 2658  SP3FNW DL1R JN58 (x7)
153745  -6 1478  SP3FNW EA3AGF R-16 (x2)
072515  -9 1930  SP3FNW RW9AD MO05
073415  -9  413  SP3FNW OH3OJ -13 (x3)
075715 -10 1740  SP3FNW IK4JPP JN54 (x2)
10m 
UTC    dB Audio  Message
075145 -12 1845  SP3FNW R3EDI KO82
093100 -11 1145  SP3FNW E70SZ JN84 (x6)
100200  -2  708  SP3FNW DO4EE JN39 (x2)
104430  +1 1144  SP3FNW DG6TOM JN58
113430  -7 1802  SP3FNW DH1NGL +01 (x3)

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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