SP4LEF — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving SP4LEF, decoded by SO8OO in southeastern Poland. 52 FT8 messages attributed to this token as transmitter, on 160m, 80m, 40m, 20m, across 6 UTC dates in the available aggregate history. Observed between 2026-07-27 and 2026-09-05.
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 52 FT8 messages attributed to SP4LEF as the transmitting token by decoded message structure across 6 UTC dates in the available aggregate history. The largest monitored-band total was 160 m (60%), followed by 40 m (21%) and 80 m (17%). Several six-hour UTC windows tied for the largest share (77%), so no unique busiest interval is claimed. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (87%); the estimated median was +5 dB.
Overview
Bands
Last attributed message: 2026-09-05 00:09 UTC
Observed FT8 message patterns
- Attributed sample
- 52 messages
- Active dates
- 6 UTC dates
- Estimated median S/N
- +5 dB
- Estimated 10th-90th percentile
- -9 to +9 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 2, moderate (-15 to -9 dB) 5, strong (≥ -8 dB) 45.
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 SP4LEF 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 SP4LEF
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 · 30 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 405 km (approx.)
- Last such locator decoded
- 2026-09-05 00:08 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 | SP4LEF S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 09-05 00:08 | 160m | +14 / - | RI1FJL | - / -15 | 3 | ✓ Closing fragment |
| 09-04 01:00 | 160m | +4 / - | GM6URC | - / - | 4 | Partial capture |
| 09-04 00:57 | 160m | +2 / - | SV7BVM | - / - | 3 | Partial capture |
| 09-04 00:54 | 160m | +8 / -11 | OM7ASP | +2 / -1 | 7 | ✓ Full exchange observed |
| 09-04 00:47 | 160m | +5 / - | GM6URC | - / - | 4 | Partial capture |
| 09-04 00:43 | 160m | +2 / - | 9A4ZM | +10 / +6 | 3 | Partial capture |
| 09-04 00:43 | 160m | +5 / -24 | EA1CQ | -11 / -18 | 7 | ✓ Full exchange observed |
| 09-04 00:42 | 160m | +6 / -1 | OK1DXR | +3 / +9 | 5 | ✓ Full exchange observed |
| 09-04 00:41 | 160m | +4 / +8 | DL7UKM | -11 / +2 | 7 | ✓ Full exchange observed |
| 09-03 23:45 | 80m | +6 / - | RI1FJL | - / -16 | 9 | Partial capture |
| 09-03 18:47 | 40m | -4 / - | RI1FJL | - / +9 | 2 | Partial capture |
| 07-29 06:29 | 40m | -9 / - | SQ5EKY | - / - | 3 | ✓ Closing fragment |
| 07-28 15:23 | 40m | -8 / - | SQ5OMY | -15 / - | 6 | ✓ Closing observed |
| 07-27 16:06 | 40m | -19 / - | SQ5OMY | -12 / - | 3 | ✓ Full exchange observed |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 005530 +4 389 SP4LEF OM7ASP RR73 005545 +9 964 OM7ASP SP4LEF 73 (x2) 005630 +9 775 SP4LEF <...> -10 005645 +8 964 OM7ASP SP4LEF R+20 005745 +6 964 SV7BVM SP4LEF KO13 (x3) 010000 +0 1197 GM6URC SP4LEF KO13 (x4) 000845 +14 1118 RI1FJL SP4LEF KO13 (x3)
UTC dB Audio Message 234515 +13 1319 RI1FJL SP4LEF KO13 (x9)
UTC dB Audio Message 160645 -11 1002 SP4LEF SQ5OMY +16 160700 -19 1234 SQ5OMY SP4LEF R+20 160715 -13 1001 SP4LEF SQ5OMY RR73 152315 -9 1421 SQ5OMY SP4LEF KO13 (x4) 152530 -15 1012 SP4LEF SQ5OMY RR73 152545 -6 1012 SQ5OMY SP4LEF 73 062945 -9 1495 SQ5EKY SP4LEF +15 (x3) 184745 -5 3048 RI1FJL SP4LEF KO13 (x2)
UTC dB Audio Message 191130 -18 1052 SQ5OMY SP4LEF R-04
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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