SP1JW — 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 SP1JW, decoded by SO8OO in southeastern Poland. 343 FT8 messages attributed to this token as transmitter, on 40m, 20m, 10m, across 24 UTC dates in the available aggregate history. Observed between 2026-06-07 and 2026-10-19.
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 343 FT8 messages attributed to SP1JW as the transmitting token by decoded message structure across 24 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (56%), followed by 40 m (42%) and 10 m (2%). Most decodes (90%) fell within the six-hour window 05:00-11:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (62%); the estimated median was -6 dB.
Overview
Bands
Last attributed message: 2026-10-19 08:33 UTC
Observed FT8 message patterns
- Attributed sample
- 343 messages
- Active dates
- 24 UTC dates
- Estimated median S/N
- -6 dB
- Estimated 10th-90th percentile
- -17 to +9 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 46, moderate (-15 to -9 dB) 84, strong (≥ -8 dB) 213.
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 SP1JW 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 SP1JW
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
- JO73 · 260 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 613 km (approx.)
- Last such locator decoded
- 2026-10-19 08:33 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 | SP1JW S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 10-23 11:42 | 10m | - / - | EA7Z | +6 / - | 2 | Partial capture |
| 10-19 08:27 | 40m | - / - | SP4GDW | -13 / - | 2 | Partial capture |
| 10-19 08:26 | 40m | -6 / - | VE2LBI | - / - | 12 | Partial capture |
| 09-25 09:15 | 10m | - / +3 | UA9LAO | -4 / - | 2 | ✓ Closing fragment |
| 09-25 09:09 | 10m | - / -8 | RA9LL | -12 / - | 2 | ✓ Closing fragment |
| 09-25 09:07 | 10m | - / -10 | RW9AD | -15 / - | 2 | ✓ Closing fragment |
| 09-20 08:38 | 40m | +8 / - | N1IWP | - / - | 25 | Partial capture |
| 08-27 08:58 | 20m | - / -14 | 9A6T | -17 / - | 3 | ✓ Closing fragment |
| 08-05 09:43 | 20m | -12 / - | TA1MHS | - / -10 | 3 | ✓ Closing fragment |
| 07-29 09:43 | 20m | - / -22 | DL6KA | +8 / - | 4 | Partial capture |
| 07-27 09:19 | 20m | - / - | GW8PSJ | -7 / - | 3 | Partial capture |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 090730 -15 1134 SP1JW RW9AD -10 (x2) 090900 -12 2078 SP1JW RA9LL -08 (x2) 091530 -4 1268 SP1JW UA9LAO +03 (x2) 114215 +4 638 SP1JW EA7Z IM67 (x2)
UTC dB Audio Message 082630 -3 2535 VE2LBI SP1JW JO73 (x3) 082745 -15 2374 SP1JW SP4GDW JO93 (x2) 082830 -6 2534 VE2LBI SP1JW JO73 (x8) 191700 -8 2438 SP1JW EA3HKY -15 192330 -13 2438 SP1JW EA5IT IM99
UTC dB Audio Message 094415 +8 633 SP1JW DL6KA -22 094430 -13 2443 CQ SP1JW JO73 094445 +7 633 SP1JW DL6KA -22 121745 -12 811 SP1JW M0PFX -17 094315 -14 1982 CQ SP1JW JO73 094345 -7 1079 TA1MHS SP1JW -10 (x3) 105900 -12 1186 CR5VP SP1JW 73 110730 -17 1756 CQ SP1JW JO73 a1 064115 -6 692 SP1JW XQ1KK RR73 101000 -11 2211 SP1JW R4FDW -17 085845 -20 1965 SP1JW 9A6T -14 (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.
Explore CW reception at SO8OOFT8DB and SO8OO WebSDR are a hobby project maintained solo. ☕ Buy me a coffee