SP1ADT — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving SP1ADT, decoded by SO8OO in southeastern Poland. 578 FT8 messages attributed to this token as transmitter, on 80m, 40m, across 30 UTC dates in the available aggregate history. Observed between 2026-06-07 and 2026-10-10.
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 578 FT8 messages attributed to SP1ADT as the transmitting token by decoded message structure across 30 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (66%), followed by 80 m (34%). Most decodes (54%) fell within the six-hour window 18:00-00:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (75%); the estimated median was -3.2 dB.
Overview
Bands
Last attributed message: 2026-10-10 23:51 UTC
Observed FT8 message patterns
- Attributed sample
- 578 messages
- Active dates
- 30 UTC dates
- Estimated median S/N
- -3.2 dB
- Estimated 10th-90th percentile
- -14 to +11 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 38, moderate (-15 to -9 dB) 109, strong (≥ -8 dB) 431.
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 SP1ADT 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 SP1ADT
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
- JO83 · 315 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 515 km (approx.)
- Last such locator decoded
- 2026-10-08 18:27 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 | SP1ADT S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 10-10 23:58 | 80m | - / - | DO1ANB | -20 / - | 2 | Partial capture |
| 10-10 23:53 | 80m | - / - | DO1ANB | -19 / - | 6 | Partial capture |
| 10-10 23:51 | 80m | -9 / 0 | F4BND | -8 / - | 3 | ✓ Closing observed |
| 10-10 23:50 | 80m | - / -9 | RK3DSW | -16 / - | 6 | Partial capture |
| 10-10 23:49 | 80m | -6 / - | IW9FRA | - / -16 | 3 | Partial capture |
| 10-10 23:48 | 80m | -1 / +10 | DL7PIA | -3 / -12 | 3 | ✓ Full exchange observed |
| 10-10 23:38 | 80m | +10 / - | 9H6C | - / -16 | 2 | ✓ Closing fragment |
| 10-10 23:37 | 80m | +8 / - | PC2F | - / -14 | 2 | ✓ Closing fragment |
| 10-10 23:36 | 80m | +10 / -10 | EC5M | -6 / -12 | 14 | Partial capture |
| 10-10 23:34 | 80m | +4 / -4 | EA4DL | -16 / -17 | 3 | ✓ Full exchange observed |
| 10-10 23:33 | 80m | +3 / -1 | F4BND | -5 / -16 | 7 | ✓ Full exchange observed |
| 10-10 23:31 | 80m | +5 / -13 | I1WUA | -4 / - | 3 | ✓ Closing observed |
| 10-10 23:29 | 80m | +10 / - | IW9FRA | - / -13 | 2 | Partial capture |
| 10-10 20:28 | 80m | -1 / - | DO1SHK | - / -20 | 3 | ✓ Closing fragment |
| 10-10 20:25 | 80m | -1 / - | 4Z5AV | -11 / -13 | 3 | ✓ Closing observed |
| 10-10 07:11 | 40m | -11 / -10 | F1HFP | -10 / -9 | 4 | ✓ Full exchange observed |
| 10-10 07:10 | 40m | -12 / -1 | PE1NAO | -22 / -15 | 4 | ✓ Full exchange observed |
| 10-10 07:06 | 40m | -13 / +2 | IV3XPP | -12 / -8 | 5 | ✓ Full exchange observed |
| 10-10 07:02 | 40m | -7 / - | M9YDD | - / -10 | 2 | ✓ Closing fragment |
| 10-10 06:59 | 40m | -10 / -1 | SP4BB | -8 / -10 | 4 | ✓ Full exchange observed |
| 10-09 18:13 | 40m | - / - | OE3MJA | -1 / - | 2 | ✓ Closing fragment |
| 10-09 18:12 | 40m | - / - | DL8TV | +5 / - | 2 | Partial capture |
| 10-09 11:37 | 40m | -17 / -8 | IK0CHU | -18 / - | 2 | ✓ Closing observed |
| 10-08 19:27 | 80m | +8 / - | OM2WW | 0 / -16 | 3 | ✓ Closing observed |
| 10-08 19:25 | 80m | -3 / -9 | OL900CO | +5 / 0 | 2 | Partial capture |
| 10-08 19:24 | 80m | -10 / - | DA6KU | - / -14 | 2 | ✓ Closing fragment |
| 10-08 19:23 | 80m | +2 / -3 | YO3AI | -13 / -15 | 3 | ✓ Full exchange observed |
| 10-08 19:21 | 80m | +8 / - | YT2U | +8 / -7 | 3 | ✓ Closing observed |
| 10-08 19:18 | 80m | - / - | DK8HC | +3 / - | 5 | Partial capture |
| 10-08 19:17 | 80m | +6 / - | ON1ACB | - / -12 | 2 | ✓ Closing fragment |
| 10-08 19:15 | 80m | -1 / +10 | SQ5ANT | +2 / - | 3 | ✓ Closing observed |
| 10-08 19:13 | 80m | 0 / - | OK1FKY | +2 / -6 | 4 | ✓ Full exchange observed |
| 10-08 19:12 | 80m | +6 / -9 | SP4BB | +1 / -6 | 4 | ✓ Full exchange observed |
| 10-08 19:09 | 80m | - / -13 | DO2BBC | +4 / - | 2 | ✓ Closing fragment |
| 10-08 18:51 | 40m | - / +10 | DK6WS | -14 / - | 2 | ✓ Closing fragment |
| 10-08 18:30 | 40m | -6 / - | YO2LFP | - / -12 | 2 | Partial capture |
| 10-08 18:29 | 40m | -2 / +1 | DK5IR | -2 / -5 | 4 | ✓ Full exchange observed |
| 10-08 18:29 | 40m | - / - | R1BDX | -12 / - | 2 | Partial capture |
| 10-08 18:27 | 40m | -1 / +4 | PA8DC | -6 / -14 | 5 | ✓ Full exchange observed |
| 10-08 17:53 | 40m | -16 / - | EX7CQ | -9 / -9 | 2 | ✓ Closing observed |
| 10-08 17:47 | 40m | -15 / -7 | PD3RVH | -17 / - | 2 | ✓ Closing observed |
| 10-08 17:25 | 40m | - / - | G4DBW | -1 / - | 2 | Partial capture |
| 09-20 02:03 | 40m | - / -14 | UB4CJS | -12 / - | 5 | Partial capture |
| 09-20 01:58 | 40m | - / -3 | RY3F | -1 / - | 3 | Partial capture |
| 09-20 01:30 | 80m | - / -26 | YO6LM | +9 / - | 3 | Partial capture |
| 09-20 01:29 | 80m | -5 / - | EC5M | - / -15 | 3 | ✓ Closing fragment |
| 09-20 01:26 | 80m | -4 / - | IT9BYL | - / -16 | 2 | Partial capture |
| 09-20 01:24 | 80m | +2 / +9 | SN40KZE | -7 / -7 | 4 | Partial capture |
| 09-20 01:16 | 40m | - / -7 | RY3F | -2 / - | 3 | Partial capture |
| 09-15 00:49 | 80m | - / -3 | 9A5MP | -20 / - | 7 | Partial capture |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 235115 -9 1503 F4BND SP1ADT RR73 235130 -16 870 SP1ADT RK3DSW -10 235130 -11 1502 SP1ADT F4BND 73 235200 -12 870 SP1ADT RK3DSW -10 (x3) 235300 -19 1289 SP1ADT DO1ANB JO31 (x6) 235600 -9 1502 SP1ADT DO1OAS JO51 235800 -24 1289 SP1ADT DO1ANB JO31 (x2)
UTC dB Audio Message 070500 -8 1773 IK4IDY SP1ADT RR73 070600 -13 1634 IV3XPP SP1ADT -08 (x2) 070645 -11 1634 SP1ADT IV3XPP R+02 070700 -13 1633 IV3XPP SP1ADT RR73 070715 -13 1634 SP1ADT IV3XPP 73 070900 -6 1225 OZ3MC SP1ADT RR73 071000 -10 1376 PE1NAO SP1ADT -15 071015 -22 1376 SP1ADT PE1NAO R-01 071030 -13 1375 PE1NAO SP1ADT RR73 071045 -21 1376 SP1ADT PE1NAO 73 071100 -11 1304 F1HFP SP1ADT -09 071115 -10 1304 SP1ADT F1HFP R-10 071130 -11 1305 F1HFP SP1ADT RR73 071145 -10 1304 SP1ADT F1HFP 73
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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