SP4WJ — reception at SO8OO
Signals decoded by SO8OO in southeastern Poland. FT8 and CW have separate histories; all times are UTC.
FT8 activity
Receiver-side FT8 activity involving SP4WJ, decoded by SO8OO in southeastern Poland. 8,163 FT8 messages attributed to this token as transmitter, on 160m, 80m, 40m, across 114 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-11-05.
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 8,163 FT8 messages attributed to SP4WJ as the transmitting token by decoded message structure across 114 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (98%), followed by 40 m (1%) and 160 m (0%). Most decodes (86%) fell within the six-hour window 19:00-01:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (69%); the estimated median was -4 dB.
Overview
Bands
Last attributed message: 2026-11-05 23:15 UTC
Observed FT8 message patterns
- Attributed sample
- 8,163 messages
- Active dates
- 114 UTC dates
- Estimated median S/N
- -4 dB
- Estimated 10th-90th percentile
- -15 to +7 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 695, moderate (-15 to -9 dB) 1,874, strong (≥ -8 dB) 5,594.
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 SP4WJ 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 SP4WJ
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
- KO03 · 6,908 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 400 km (approx.)
- Last such locator decoded
- 2026-11-05 23:14 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 UTC | Band | SP4WJ S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 11-05 23:10 | 80m | -7 / - | K5VRX | - / -3 | 10 | Partial capture |
| 11-05 23:06 | 80m | +3 / -2 | F4NRM | -4 / -6 | 6 | ✓ Full exchange observed |
| 11-05 22:55 | 80m | -7 / -18 | F4HQB | +4 / -6 | 4 | ✓ Full exchange observed |
| 11-05 22:43 | 40m | - / -9 | IK4HLQ | -4 / - | 2 | ✓ Closing fragment |
| 11-05 22:36 | 40m | -18 / - | IK4LZH | - / - | 2 | Partial capture |
| 11-05 22:22 | 80m | +1 / - | SP9HZW | - / - | 8 | Partial capture |
| 11-05 22:10 | 80m | -17 / - | SP9HZW | - / - | 9 | Partial capture |
| 11-05 22:08 | 80m | -13 / +4 | SP9JZU | +12 / - | 6 | ✓ Full exchange observed |
| 11-05 21:52 | 80m | -5 / - | LA5FJA | - / - | 19 | Partial capture |
| 11-05 21:50 | 80m | -7 / +2 | OK1ACE | -2 / +1 | 5 | ✓ Full exchange observed |
| 11-05 21:45 | 80m | -8 / -7 | ON6LEO | 0 / -5 | 9 | ✓ Full exchange observed |
| 11-05 21:33 | 80m | -14 / -17 | IK2VFR | -10 / -18 | 3 | ✓ Full exchange observed |
| 11-05 21:31 | 80m | -11 / -5 | E78W | +7 / +2 | 5 | ✓ Full exchange observed |
| 11-05 21:22 | 80m | -2 / 0 | SQ7SE | +2 / - | 12 | ✓ Closing observed |
| 11-05 21:16 | 40m | - / - | DL6UM | -5 / - | 3 | Partial capture |
| 11-05 19:43 | 80m | -3 / - | F5UKW | - / - | 2 | Partial capture |
| 11-05 18:17 | 80m | -4 / - | F4VWK | - / - | 11 | Partial capture |
| 11-05 18:09 | 80m | -13 / - | F4VWK | - / - | 5 | Partial capture |
| 11-05 17:51 | 80m | -2 / - | SP9KW | - / - | 5 | Partial capture |
| 11-05 17:39 | 80m | -6 / -18 | F6ITD | -10 / -9 | 6 | ✓ Full exchange observed |
| 11-05 17:30 | 80m | -4 / - | F6ITD | - / - | 13 | Partial capture |
| 11-04 23:29 | 80m | -12 / - | IS0IYX | - / - | 8 | Partial capture |
| 11-04 22:31 | 80m | -4 / - | 9A5MP | - / - | 3 | Partial capture |
| 11-04 22:25 | 80m | -12 / - | 9A5MP | - / - | 4 | Partial capture |
| 11-04 22:18 | 80m | - / -18 | DO7MEW | +2 / - | 3 | ✓ Closing fragment |
| 11-04 21:48 | 80m | -9 / - | EA3JIJ | - / - | 3 | Partial capture |
| 11-04 21:45 | 80m | -10 / - | EA3JIJ | - / - | 2 | Partial capture |
| 11-04 21:18 | 80m | -7 / - | SQ8MSX | - / - | 9 | Partial capture |
| 11-04 20:38 | 80m | -10 / - | TA7MMI | - / - | 3 | Partial capture |
| 11-04 20:30 | 80m | -1 / - | OK1ACE | - / - | 15 | Partial capture |
| 11-04 20:02 | 80m | -17 / - | IK2SAR | - / - | 6 | Partial capture |
| 11-04 19:53 | 80m | -20 / - | IU1DRY | - / - | 4 | Partial capture |
| 11-04 19:30 | 80m | -15 / - | IU2THY | - / - | 4 | Partial capture |
| 11-04 19:27 | 80m | -3 / -19 | LZ1GC | +13 / +6 | 6 | ✓ Full exchange observed |
| 11-04 18:43 | 80m | 0 / -12 | F4MUM | +5 / -1 | 8 | Partial capture |
| 11-04 14:25 | 40m | - / -7 | F4JDS | -6 / - | 5 | ✓ Closing fragment |
| 11-04 14:20 | 40m | - / -9 | OE3RWR | +2 / - | 2 | Partial capture |
| 11-04 14:13 | 40m | - / -6 | SM0EJR | -8 / - | 2 | Partial capture |
| 11-04 13:01 | 40m | - / -3 | SP5AZN | -20 / - | 2 | ✓ Closing fragment |
| 11-04 00:14 | 80m | -13 / - | OH7MA | - / +1 | 22 | ✓ Closing fragment |
| 11-04 00:04 | 80m | -13 / - | OH7MA | - / - | 8 | Partial capture |
| 11-03 23:53 | 80m | -14 / - | OH7MA | - / - | 14 | Partial capture |
| 11-03 23:49 | 80m | -2 / - | SP8GEY | +10 / 0 | 6 | ✓ Closing observed |
| 11-03 23:40 | 80m | -12 / -20 | OZ1BGQ | +2 / +2 | 17 | Partial capture |
| 11-03 23:36 | 80m | -6 / - | VE3DZ | - / - | 5 | Partial capture |
| 11-03 22:12 | 80m | -2 / - | CT2IOK | - / - | 11 | Partial capture |
| 11-03 22:11 | 80m | - / -9 | HA7NB | +4 / - | 2 | ✓ Closing fragment |
| 11-03 22:05 | 80m | -10 / -15 | IK5BOH/2 | +6 / +2 | 5 | Partial capture |
| 11-03 21:51 | 80m | -7 / - | 9K2HS | - / - | 6 | Partial capture |
| 11-03 20:34 | 80m | -6 / -11 | OE5EYM | +1 / - | 5 | ✓ Closing observed |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 230645 -4 3001 F4NRM SP4WJ KO03 230700 +3 929 SP4WJ F4NRM -02 230715 +5 3001 F4NRM SP4WJ R-06 230730 -10 929 SP4WJ F4NRM RR73 230745 +6 3001 F4NRM SP4WJ 73 231045 -3 1073 K5VRX SP4WJ KO03 (x10)
UTC dB Audio Message 142615 -6 495 SP4WJ F4JDS -07 (x4) 144400 -16 2338 HB9SFL SP4WJ KO03 155345 -13 2080 SP4WJ PD0MNO -17 172315 -8 1560 SP4WJ IU3WNP -11 195500 -14 920 SP9MZU SP4WJ 73 211630 -4 946 SP4WJ DL6UM JO60 (x3) 223630 -18 231 IK4LZH SP4WJ KO03 (x2) 224315 -3 1977 SP4WJ IK4HLQ -09 (x2)
UTC dB Audio Message 011615 +15 2639 SP4WJ S56P -07 (x2) 011915 -4 1892 SP4WJ F5RRS -19 (x2) 012015 -23 1892 SP4WJ SP2EWQ JO93 012015 +11 2639 SP4WJ S56P JN76 (x4) 213800 +2 2185 SP4WJ ON4DS -22 (x5) 214100 -12 277 SP4WJ M0ABG -16
UTC dB Audio Message 194730 +1 1654 SP4WJ SP7TJ RR73 195530 -21 978 OK1AR SP4WJ KO03 (x2) 203930 -11 2528 SP7IWA SP4WJ KO03 (x3) 204330 -20 1657 SP6ZC SP4WJ KO03 205315 -23 2651 F1PBZ SP4WJ KO03 000700 -20 1333 SP3CUG SP4WJ KO03 (x2) 000830 -11 2633 F6EQZ SP4WJ KO03 164845 -4 1543 SP4WJ SP3HUU -15 (x2) 165115 +2 1063 SP4WJ PI4DX RR73 211430 -14 950 SP3QDM SP4WJ KO03
UTC dB Audio Message 205030 -2 2129 SP4WJ E74K RR73 130115 -15 1444 SP4WJ MM0TBH -18 130345 -9 1020 SP4WJ LZ1ZF RR73 130445 -4 958 SP4WJ DL3MIB JN57 (x6) 184830 -11 2364 SP4WJ GM3CQD -11 (x3) 153145 -8 898 SP4WJ GU0UVH -17 (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.
CW
No CW receptions recorded for this callsign in the last 30 days.
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