SP5SJL — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving SP5SJL, decoded by SO8OO in southeastern Poland. 561 FT8 messages attributed to this token as transmitter, on 160m, 80m, 60m, 40m, 20m, across 36 UTC dates in the available aggregate history. Observed between 2026-06-14 and 2026-09-20.
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 561 FT8 messages attributed to SP5SJL as the transmitting token by decoded message structure across 36 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (57%), followed by 80 m (29%) and 60 m (13%). Most decodes (77%) 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 (65%); the estimated median was -6 dB.
Overview
Bands
Last attributed message: 2026-09-20 16:53 UTC
Observed FT8 message patterns
- Attributed sample
- 561 messages
- Active dates
- 36 UTC dates
- Estimated median S/N
- -6 dB
- Estimated 10th-90th percentile
- -15 to +3 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 46, moderate (-15 to -9 dB) 153, strong (≥ -8 dB) 362.
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 SP5SJL 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 SP5SJL
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
- KO02 · 316 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 290 km (approx.)
- Last such locator decoded
- 2026-09-20 14:25 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 | SP5SJL S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 09-20 16:52 | 40m | -9 / +2 | SP9TEX | +11 / +1 | 5 | ✓ Full exchange observed |
| 09-20 14:21 | 40m | -6 / +1 | HF100PKP | -11 / - | 4 | Partial capture |
| 09-20 14:19 | 40m | -6 / -8 | II4IANT | -10 / -3 | 3 | Partial capture |
| 09-20 14:19 | 40m | -5 / - | UF6V/UA5D | - / -8 | 3 | Partial capture |
| 09-20 14:17 | 40m | -7 / - | SP9CXN | +10 / +2 | 5 | ✓ Full exchange observed |
| 09-20 10:00 | 40m | -6 / -11 | SQ2RBY/P | -17 / - | 2 | Partial capture |
| 09-20 09:58 | 40m | -9 / - | IK2VFR/P | - / -6 | 2 | Partial capture |
| 09-19 18:10 | 80m | -3 / - | SN100PKP | - / - | 2 | Partial capture |
| 09-19 18:06 | 80m | -7 / -12 | 9A3TGY | -5 / -20 | 6 | ✓ Full exchange observed |
| 09-18 18:17 | 40m | 0 / - | SO100PKP | - / -10 | 3 | Partial capture |
| 09-18 18:13 | 40m | +3 / - | GX3RAF/P | - / -9 | 5 | Partial capture |
| 09-17 11:27 | 40m | -10 / - | SQ100PKP | -2 / - | 8 | Partial capture |
| 09-17 11:26 | 40m | -6 / - | IK3/UY7LA | - / +2 | 2 | Partial capture |
| 09-16 08:45 | 40m | -7 / -1 | SQ9SZ | -8 / -18 | 5 | ✓ Full exchange observed |
| 09-16 08:43 | 40m | -8 / - | W1AW/4 | - / -6 | 2 | Partial capture |
| 09-13 18:46 | 40m | - / -7 | EX7CQ | 0 / - | 2 | Partial capture |
| 09-13 07:06 | 60m | -10 / - | SP2OSA | -16 / -15 | 4 | ✓ Closing observed |
| 09-12 17:42 | 40m | -7 / - | UB0SMX/P | - / -22 | 6 | Partial capture |
| 09-12 17:33 | 40m | -9 / - | II6IALU | - / - | 2 | Partial capture |
| 09-12 16:13 | 40m | -4 / - | II8IHBC | -9 / - | 2 | ✓ Closing observed |
| 09-12 16:12 | 40m | - / -5 | US3EW | +1 / - | 5 | ✓ Closing fragment |
| 09-12 16:11 | 40m | -18 / - | F4GMB/QRP | - / -14 | 2 | Partial capture |
| 09-12 13:19 | 40m | -4 / - | II9IAGM | - / -6 | 2 | Partial capture |
| 09-12 13:17 | 40m | -6 / - | UB3ADO/P | - / - | 2 | Partial capture |
| 09-12 13:15 | 40m | -2 / -12 | SQ3EWA | -18 / -14 | 5 | ✓ Full exchange observed |
| 09-12 13:06 | 40m | -11 / - | UB3ADO/P | - / -10 | 2 | Partial capture |
| 09-12 13:04 | 40m | -11 / -9 | SP7VCL | -8 / -13 | 5 | ✓ Full exchange observed |
| 09-11 19:13 | 80m | +3 / - | SP100PKP | - / - | 4 | Partial capture |
| 09-11 18:24 | 60m | -1 / +6 | DD6ZV | -1 / -2 | 5 | ✓ Full exchange observed |
| 09-11 18:22 | 60m | -6 / -1 | OZ1SMB | -8 / -5 | 5 | ✓ Full exchange observed |
| 09-11 18:21 | 60m | -7 / -6 | ES5RY | -10 / -15 | 5 | ✓ Full exchange observed |
| 09-11 18:01 | 40m | - / -3 | IQ2AAH | 0 / - | 2 | ✓ Closing fragment |
| 09-11 17:40 | 80m | -1 / - | VO1911G | - / -5 | 3 | Partial capture |
| 09-10 18:46 | 80m | -12 / -8 | SP3GTP | +9 / -2 | 5 | ✓ Full exchange observed |
| 09-10 18:42 | 80m | -10 / -7 | HF100PKP | +16 / -1 | 3 | Partial capture |
| 09-10 17:56 | 80m | -5 / - | SM7/DL5BTE | - / -15 | 3 | Partial capture |
| 09-10 06:58 | 40m | - / +7 | DG1ROL | -3 / - | 3 | ✓ Closing fragment |
| 09-09 15:17 | 40m | -8 / -6 | HB9MXY | -10 / -19 | 4 | ✓ Full exchange observed |
| 09-09 15:15 | 40m | -8 / +7 | OZ1SMB | +6 / +7 | 5 | ✓ Full exchange observed |
| 09-09 15:12 | 40m | -10 / - | OH0KCE | - / -13 | 5 | ✓ Closing fragment |
| 09-09 13:55 | 40m | -10 / - | SP5IP/P | - / -9 | 4 | Partial capture |
| 09-09 13:34 | 40m | -8 / - | ON2VHF/P | - / -8 | 2 | Partial capture |
| 09-09 12:40 | 40m | - / - | R6OBN | -16 / - | 2 | Partial capture |
| 09-09 12:39 | 40m | -12 / - | SV9/SV1ABB | - / -2 | 2 | Partial capture |
| 09-08 20:46 | 80m | -9 / - | DM0CRACY | - / -7 | 3 | Partial capture |
| 09-08 20:42 | 80m | -8 / -2 | 3Z100PKP | +4 / +4 | 3 | Partial capture |
| 09-08 20:40 | 80m | -8 / - | RC9WC | - / - | 2 | Partial capture |
| 09-08 14:32 | 40m | -3 / - | SO100PKP | - / 0 | 5 | Partial capture |
| 09-07 19:07 | 40m | -6 / - | A61DD | - / - | 2 | Partial capture |
| 09-06 20:32 | 80m | -7 / -14 | SP7VCL | +14 / - | 5 | ✓ Closing observed |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 141930 -3 1642 UF6V/UA5D SP5SJL KO02 141945 -10 2204 SP5SJL II4IANT -08 142000 -7 1642 UF6V/UA5D SP5SJL R-08 142115 -2 1642 II4IANT SP5SJL KO02 142130 -11 2110 SP5SJL HF100PKP +01 142145 -11 1642 II4IANT SP5SJL R-03 142200 -9 2110 SP5SJL RR73; IZ4EKI <...> -16 142315 -10 1642 HF100PKP SP5SJL KO02 (x3) 165245 -17 2191 SP9TEX SP5SJL R+01 165300 +12 2634 SP5SJL SP9TEX +02 165315 -5 2192 SP9TEX SP5SJL R+02 165330 +10 2634 SP5SJL SP9TEX RR73 165345 -5 2192 SP9TEX SP5SJL 73
UTC dB Audio Message 191300 +4 1689 SP100PKP SP5SJL KO02 (x4) 180230 -2 2308 SP5SJL II8IHBC -13 180615 -6 2105 9A3TGY SP5SJL KO02 180630 -8 734 SP5SJL 9A3TGY -12 180645 -7 2105 9A3TGY SP5SJL KO02 180700 -6 734 SP5SJL 9A3TGY -12 180715 -8 2105 9A3TGY SP5SJL R-20 180730 +0 733 SP5SJL 9A3TGY RR73 180900 -4 1898 SP5SJL RR73; SP8BDF <...> -14 180945 -2 2105 SN40KZE SP5SJL KO02 181045 -8 2105 <SN100PKP> SP5SJL KO02 (x2)
UTC dB Audio Message 182245 -9 1596 SP5SJL OZ1SMB JO54 182300 -7 1653 OZ1SMB SP5SJL -05 182315 -6 1596 SP5SJL OZ1SMB R-01 182330 -5 1652 OZ1SMB SP5SJL RR73 182345 -8 1596 SP5SJL OZ1SMB 73 182400 -5 1726 CQ SP5SJL KO02 182415 -1 1726 SP5SJL DD6ZV JO62 182430 +1 1726 DD6ZV SP5SJL -02 182445 -3 1726 SP5SJL DD6ZV R+06 182500 -3 1726 DD6ZV SP5SJL RR73 182515 +1 1726 SP5SJL DD6ZV 73 070615 -9 1752 SP2OSA SP5SJL KO02 (x2) 070700 -16 1536 SP5SJL SP2OSA RR73 070715 -13 1752 SP2OSA SP5SJL 73
UTC dB Audio Message 201000 -4 1449 SP5SJL SA5ACL -12 (x5) 201815 -21 1935 CQ SP5SJL KO02 200000 +5 2185 SP5SJL RR73; SP6BCC <...> +20 203730 +11 1358 SP5SJL HF100PKP -11
UTC dB Audio Message 132830 -18 1463 SP5SJL IQ6PE -06 (x2) 133330 -7 651 SP5SJL IR0RPER -14 072900 -20 1341 SP5SJL LB2WD -08 (x2) 073330 -22 1540 SP5SJL F4MXE +02 090445 -18 1822 SP5SJL DN9SGE JO42 113945 -19 1850 SP5SJL DN9MJK +22 (x2) 114545 -11 1029 SP5SJL YU4FQN +02 072400 -17 1447 SP5SJL M0MDS +04 072530 -14 1875 SP5SJL DJ0WO +25
UTC dB Audio Message 192030 -1 373 SP5SJL XV9T -05 (x2) 121230 -18 1072 SP5SJL EG5ECL +00 182000 -6 1784 D2ACE SP5SJL KO02 (x6) 124530 -19 1719 SP5SJL R4FDW -02 (x2) 131200 -16 2105 SP5SJL II7MGBT -09 075300 +3 467 SP5SJL RI1FJL +00 075330 -5 467 SP5SJL RR73; JR7WFC <RI1FJL> -14 073445 -21 1212 SP5SJL IU4SQE -11
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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