SP4NKJ — FT8 activity observed at SO8OO

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

Receiver-side FT8 activity involving SP4NKJ, decoded by SO8OO in southeastern Poland. 783 FT8 messages attributed to this token as transmitter, on 80m, 60m, 40m, across 51 UTC dates in the available aggregate history. Observed between 2026-06-09 and 2026-10-06.

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 783 FT8 messages attributed to SP4NKJ as the transmitting token by decoded message structure across 51 UTC dates in the available aggregate history. The largest monitored-band total was 60 m (64%), followed by 80 m (29%) and 40 m (7%). Most decodes (58%) fell within the six-hour window 15:00-21:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (90%); the estimated median was +1 dB.

Overview

783
Messages attributed
51
UTC dates decoded
117
Active 15-min windows
+1 dB
Estimated median S/N

Bands

80m · 228 60m · 503 40m · 52
First attributed message: 2026-06-09
Last attributed message: 2026-10-06 04:57 UTC

Observed FT8 message patterns

Attributed sample
783 messages
Active dates
51 UTC dates
Estimated median S/N
+1 dB
Estimated 10th-90th percentile
-8 to +9 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 11, moderate (-15 to -9 dB) 64, strong (≥ -8 dB) 708.

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 SP4NKJ 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 SP4NKJ

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 · 526 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
405 km (approx.)
Last such locator decoded
2026-10-06 04:57 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 UTCBandSP4NKJ S/NCounterpartCounterpart S/NMsgsCapture
10-06 05:08 40m - / +5 IQ9SZ/7 -19 / - 3 Partial capture
10-06 04:55 80m -2 / -6 DL7PIA 0 / +3 5 ✓ Full exchange observed
10-06 04:33 80m +1 / - KP2B - / - 7 Partial capture
10-06 04:29 60m -8 / - NP3RK - / - 2 Partial capture
10-06 04:23 60m -6 / - NP3RK - / - 2 Partial capture
10-06 04:23 60m -7 / - SV9FBK -20 / -10 4 ✓ Closing observed
10-05 18:45 80m +8 / - SQ8AZT -3 / - 6 ✓ Closing observed
10-05 18:44 80m +6 / -2 SQ5ANT +16 / -23 4 ✓ Full exchange observed
10-05 18:32 80m -6 / - SQ8AZT - / - 2 Partial capture
10-05 17:18 40m -5 / - SQ5ANT - / - 10 Partial capture
10-05 17:13 40m -16 / - SQ5ANT - / +8 2 Partial capture
10-05 17:07 40m 0 / - SQ5ANT - / - 6 Partial capture
10-05 15:22 40m -2 / 0 DL7PIA -1 / - 6 ✓ Closing observed
10-05 10:18 40m +2 / - DM8ITZ - / - 7 Partial capture
10-05 09:29 40m -11 / +8 SQ2JAD -15 / - 4 ✓ Full exchange observed
10-05 04:38 80m -12 / -7 HK3TY -17 / -17 5 ✓ Full exchange observed
10-05 04:20 80m -7 / -7 IN3IBW +4 / +4 7 ✓ Full exchange observed
10-03 05:22 60m -3 / - F5OYA/P - / -1 5 Partial capture
10-03 04:46 60m -2 / - 9H4JX - / - 4 Partial capture
10-03 04:38 60m -14 / - 9H4JX - / - 3 Partial capture
10-03 04:37 60m -6 / - MI0NWA - / -7 2 Partial capture
10-01 17:38 60m +6 / - SP3JHZ - / -9 2 Partial capture
10-01 17:37 60m - / -3 YR700SM -17 / - 3 Partial capture
10-01 17:32 60m +5 / +2 SP3JHZ 0 / 0 7 ✓ Full exchange observed
10-01 17:12 60m - / - DK1MBY -23 / - 3 Partial capture
10-01 17:07 60m - / - DK1MBY -22 / - 2 Partial capture
09-30 18:42 80m +2 / - HF100PKP - / 0 3 Partial capture
09-30 18:37 80m +3 / - HF100PKP - / -11 3 Partial capture
09-29 17:58 80m +3 / - OZ1LFI -12 / -9 5 ✓ Closing observed
09-29 17:57 80m -6 / -7 UW2ZO +6 / +7 5 ✓ Full exchange observed
09-29 17:56 80m +6 / - DL5JMN +10 / +3 4 Partial capture
09-29 17:55 80m -7 / -11 SP4H +9 / +5 5 ✓ Full exchange observed
09-29 17:53 80m -8 / -10 RX3VF -2 / +7 4 ✓ Full exchange observed
09-29 17:50 80m -2 / - DA6YY -2 / +4 4 ✓ Closing observed
09-29 17:49 80m -10 / -1 DO3ANT -6 / +2 5 ✓ Full exchange observed
09-29 17:47 80m -8 / -1 DL9KM +5 / 0 5 ✓ Full exchange observed
09-29 05:15 60m -8 / -12 DC0ED -8 / -7 5 ✓ Full exchange observed
09-29 05:15 60m -6 / -5 DL3FBI -8 / -5 5 ✓ Full exchange observed
09-29 03:57 60m - / - SV8GXC -16 / - 3 Partial capture
09-29 03:54 60m - / - DH3GAR -6 / - 2 Partial capture
09-29 03:53 60m - / - SV8GXC -16 / - 2 Partial capture
09-29 03:52 60m - / -1 F4FPR -12 / - 2 ✓ Closing fragment
09-29 03:51 60m - / - DL3NGN +4 / - 2 ✓ Closing fragment
09-29 02:30 80m -4 / -22 RQ6B -6 / -12 3 ✓ Full exchange observed
09-29 02:26 80m -1 / -9 RK4CH -10 / -10 6 ✓ Full exchange observed
09-29 02:26 80m -10 / - R6ZB -8 / -15 3 ✓ Closing observed
09-29 02:24 80m - / - R4HLO -16 / - 3 Partial capture
09-29 02:22 80m 0 / +1 DO5PY 0 / -2 5 ✓ Full exchange observed
09-29 02:18 80m -5 / +5 LY2EW -2 / -3 8 ✓ Full exchange observed
09-29 02:16 80m -2 / 0 DO1OAS -7 / -3 8 ✓ Full exchange observed

Recent FT8 messages decoded at SO8OO

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

40m 
UTC    dB Audio  Message
171345 -13 1482  SQ5ANT SP4NKJ +08 (x11)
050315 -18 1998  SP4NKJ IU1SCQ -21
050830 -18 1768  SP4NKJ IQ9SZ/7 +05 (x3)
80m 
UTC    dB Audio  Message
184700  -5 1813  SP4NKJ SQ8AZT RR73
184715  +9  514  SQ8AZT SP4NKJ 73
043300  +1  706  KP2B SP4NKJ KO13 (x7)
045530  -1  851  DL7PIA SP4NKJ KO13
045545  +1  850  SP4NKJ DL7PIA -06
045600  +1  851  DL7PIA SP4NKJ R+03
045615  -2  850  SP4NKJ DL7PIA RR73
045630  -6  851  DL7PIA SP4NKJ 73
045730  -2 1147  CN8NY SP4NKJ KO13
60m 
UTC    dB Audio  Message
044730  -7 1345  9H4JX SP4NKJ KO13
052245 -13 1344  F5OYA/P SP4NKJ KO13 (x4)
052430  -6  830  SP4NKJ SQ100LKK +09
052445  +0 1344  F5OYA/P SP4NKJ R-01
042300 -11 1478  SV9FBK SP4NKJ KO13
042330 -11 1478  NP3RK SP4NKJ KO13 (x2)
042430  -5 1478  SV9FBK SP4NKJ R-10
042445 -20 1945  SP4NKJ SV9FBK RR73
042500  -6 1478  SV9FBK SP4NKJ 73
042900 -13 1478  NP3RK SP4NKJ KO13 (x2)
20m 
UTC    dB Audio  Message
135300 +10  531  SP4NKJ TM40TFR -18
135330 +13  531  SP4NKJ RR73; DC4UW <...> -16
035100 -22 1509  SP4NKJ W3YNI +01 (x2)
192245  +7  905  SP4NKJ GB64MOD -16 (x2)
10m 
UTC    dB Audio  Message
045600  -8 2327  SP4NKJ RD7LC -04 (x2)
171630  +0  562  SP4NKJ TK5K +12

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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