F5LSK — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving F5LSK, decoded by SO8OO in southeastern Poland. 408 FT8 messages attributed to this token as transmitter, on 80m, 40m, across 14 UTC dates in the available aggregate history. Observed between 2026-06-09 and 2026-09-07.
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 408 FT8 messages attributed to F5LSK as the transmitting token by decoded message structure across 14 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (93%), followed by 80 m (7%). Most decodes (88%) fell within the six-hour window 15:00-21:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -10 dB.
Overview
Bands
Last attributed message: 2026-09-07 15:41 UTC
Observed FT8 message patterns
- Attributed sample
- 408 messages
- Active dates
- 14 UTC dates
- Estimated median S/N
- -10 dB
- Estimated 10th-90th percentile
- -18 to -3 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 78, moderate (-15 to -9 dB) 158, strong (≥ -8 dB) 172.
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 F5LSK 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 F5LSK
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
- JN18 · 273 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 1,370 km (approx.)
- Last such locator decoded
- 2026-09-07 15:41 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 | F5LSK S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 09-07 17:52 | 40m | - / - | EA7UW | -15 / - | 2 | Partial capture |
| 09-07 15:38 | 40m | - / - | OE6TNO | -4 / - | 4 | Partial capture |
| 09-07 15:37 | 40m | - / - | EW4TT | +6 / - | 2 | Partial capture |
| 09-07 15:37 | 40m | - / - | RW1AI | -18 / - | 2 | Partial capture |
| 09-07 15:36 | 40m | - / - | DG6MA | -16 / - | 2 | Partial capture |
| 09-06 15:54 | 40m | -14 / - | F1UNR | - / +4 | 2 | ✓ Closing fragment |
| 08-30 16:56 | 40m | -13 / - | PA5KK | -7 / - | 4 | ✓ Full exchange observed |
| 08-30 16:55 | 40m | -14 / - | 2E0DGP | - / +1 | 3 | ✓ Closing fragment |
| 08-30 16:53 | 40m | -14 / +1 | DK8ZZ | +2 / +4 | 5 | ✓ Full exchange observed |
| 08-26 15:15 | 40m | -20 / - | M7WWG/P | - / +6 | 10 | ✓ Closing fragment |
| 08-26 15:13 | 40m | -21 / +6 | F4NGO | -16 / +7 | 5 | ✓ Full exchange observed |
| 08-26 15:11 | 40m | -21 / - | DL1TJ | -22 / -19 | 4 | Partial capture |
| 08-26 15:09 | 40m | -20 / +3 | OK1XBF | -10 / - | 4 | ✓ Closing observed |
| 08-26 15:08 | 40m | -18 / - | PD1GOL | - / -2 | 2 | Partial capture |
| 08-26 15:04 | 40m | -18 / - | M0PFX | - / +2 | 7 | ✓ Closing fragment |
| 08-26 15:02 | 40m | -19 / - | DL0GEO | - / 0 | 4 | ✓ Closing fragment |
| 08-26 14:58 | 40m | - / - | DL5KBT | -3 / - | 8 | Partial capture |
| 08-26 14:57 | 40m | - / -3 | F1PBZ | -5 / - | 3 | Partial capture |
| 08-26 14:53 | 40m | - / -12 | DL9PST | -22 / - | 2 | ✓ Closing fragment |
| 08-25 13:39 | 40m | - / - | PD0IFI | -17 / - | 2 | Partial capture |
| 08-25 12:01 | 40m | - / - | PD0IFI | -12 / - | 2 | Partial capture |
| 08-25 11:25 | 40m | - / - | OE6PVG | -15 / - | 7 | Partial capture |
| 08-25 09:20 | 40m | - / -5 | SP9CXN | 0 / - | 2 | ✓ Closing fragment |
| 08-25 09:18 | 40m | - / - | SP9BGL | -6 / - | 7 | Partial capture |
| 08-25 09:11 | 40m | - / -10 | SP9ENV | -1 / - | 6 | ✓ Closing fragment |
| 08-25 09:05 | 40m | - / +5 | DG5RC | -4 / - | 2 | ✓ Closing fragment |
| 08-25 08:57 | 40m | - / - | UT4PA | +4 / - | 2 | Partial capture |
| 08-25 08:45 | 40m | - / - | DM5KK | -12 / - | 12 | Partial capture |
| 08-24 18:30 | 40m | -8 / - | IU1RMP | - / - | 6 | Partial capture |
| 08-24 18:27 | 40m | -4 / - | EA1KCN | - / +8 | 4 | Partial capture |
| 08-24 18:25 | 40m | -6 / - | GW4HZA | - / +5 | 4 | ✓ Closing fragment |
| 08-24 18:23 | 40m | -5 / -6 | SP9MZU | +2 / -2 | 5 | ✓ Full exchange observed |
| 08-24 18:17 | 40m | -3 / - | RA3DA | - / - | 10 | Partial capture |
| 08-24 18:14 | 40m | -7 / - | <...> | - / +6 | 4 | Partial capture |
| 08-24 18:07 | 40m | -4 / - | PD7FS | - / - | 13 | Partial capture |
| 08-24 18:02 | 40m | - / - | RK4F | -12 / - | 2 | Partial capture |
| 08-24 18:01 | 40m | -5 / - | LX1JX | - / - | 9 | Partial capture |
| 08-24 17:59 | 40m | -6 / -9 | RU3XW | -8 / -17 | 6 | ✓ Full exchange observed |
| 08-24 17:50 | 40m | -6 / - | DJ0ABM | - / -4 | 12 | Partial capture |
| 08-24 17:44 | 40m | -9 / -5 | SP9DCA | +16 / -6 | 10 | ✓ Full exchange observed |
| 08-24 17:43 | 40m | -6 / +8 | EA2AA | -6 / +6 | 5 | ✓ Full exchange observed |
| 08-24 17:41 | 40m | -8 / -16 | R3QX | -1 / -2 | 5 | ✓ Full exchange observed |
| 08-24 17:34 | 40m | -6 / - | PD0PY | - / - | 8 | Partial capture |
| 08-24 17:28 | 40m | -6 / - | F4NGR | - / - | 9 | Partial capture |
| 08-24 17:22 | 40m | -9 / - | M9OHM | -6 / - | 4 | ✓ Full exchange observed |
| 08-24 17:20 | 40m | -6 / - | F1LPT/P | -20 / +7 | 3 | ✓ Closing observed |
| 08-24 17:19 | 40m | -7 / - | DB4MS | - / +2 | 3 | ✓ Closing fragment |
| 08-24 17:13 | 40m | -6 / - | SP5ZTM | - / - | 8 | Partial capture |
| 08-24 17:12 | 40m | -6 / - | PF7F | - / -5 | 3 | ✓ Closing fragment |
| 08-24 17:10 | 40m | -7 / -3 | DG4FAA | -16 / -1 | 5 | ✓ Full exchange observed |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 153630 -15 2486 F5LSK DG6MA JN48 153730 -15 2087 F5LSK RW1AI KO59 153730 +5 1628 F5LSK EW4TT KO23 153800 -20 2087 F5LSK RW1AI KO59 153800 +6 1628 F5LSK EW4TT KO23 153800 -16 2485 F5LSK DG6MA JN48 153830 -3 1629 F5LSK OE6TNO JN77 (x4) 154115 -13 1628 CQ F5LSK JN18 175030 -7 1635 F5LSK PA3BMB JO22 175230 -15 1399 F5LSK EA7UW IM76 175230 -19 1634 F5LSK DO7UFN JN39 175300 -15 1400 F5LSK EA7UW IM76
UTC dB Audio Message 002200 -6 1744 F5LSK EC5M RR73 002215 +3 1749 EC5M F5LSK R+05 002230 -6 1745 F5LSK EC5M RR73 002245 +2 1749 EC5M F5LSK 73 002300 -19 1749 F5LSK F6FHZ JN18 002345 +3 1749 F6FHZ F5LSK +12 (x2) 002430 +7 2275 F5LSK 9A3AUH JN75 002515 +5 1749 9A3AUH F5LSK +03 (x3) 002715 +2 705 N4DB F5LSK JN18 201615 +4 2525 ER5DX F5LSK JN18 (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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