S52KM — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving S52KM, decoded by SO8OO in southeastern Poland. 13 FT8 messages attributed to this token as transmitter, on 40m, across 1 UTC dates in the available aggregate history. Last observed 2026-09-17.
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 13 FT8 messages attributed to S52KM as the transmitting token by decoded message structure across 1 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (100%). In this small sample, the estimated median decoder S/N was -7 dB; no usual signal pattern is inferred.
Overview
Observed FT8 message patterns
- Attributed sample
- 13 messages
- Active dates
- 1 UTC dates
- Estimated median S/N
- -7 dB
- S/N percentile sample
- Too small
- Recurring-pattern threshold
- Not met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 0, moderate (-15 to -9 dB) 4, strong (≥ -8 dB) 9.
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. The sample does not meet the threshold for a recurring time or signal-pattern claim (20 attributed messages, three UTC dates and five distinct 15-minute windows).
Frequent counterpart tokens observed at SO8OO
Tokens most often paired with S52KM in decoded directed-looking exchanges:
Most frequent locator attributed to S52KM
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
- JN76 · 10 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 631 km (approx.)
- Last such locator decoded
- 2026-09-17 11:21 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 | S52KM S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 09-17 11:21 | 40m | -12 / - | IQ4JO | - / - | 2 | Partial capture |
| 09-17 11:21 | 40m | - / -13 | DK7ZT | -15 / - | 3 | Partial capture |
| 09-17 11:20 | 40m | - / - | UX7QV | -2 / - | 4 | Partial capture |
| 09-17 11:17 | 40m | - / - | SQ7TX | -15 / - | 4 | Partial capture |
| 09-17 11:17 | 40m | -5 / 0 | 9A7BB | -18 / - | 3 | ✓ Closing observed |
| 09-17 11:16 | 40m | - / - | ON7DE | -22 / - | 3 | Partial capture |
| 09-17 11:16 | 40m | - / - | UX7QV | -3 / - | 3 | Partial capture |
| 09-17 11:15 | 40m | - / -6 | DK7ZT | -18 / - | 3 | Partial capture |
| 09-17 11:14 | 40m | - / - | HA7TM | +4 / - | 3 | Partial capture |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 111915 -5 1593 CQ S52KM JN76 111930 -15 1594 S52KM SQ7TX KO01 111945 -7 1593 CQ S52KM JN76 112000 -2 1593 S52KM UX7QV KN29 112015 -6 1594 CQ S52KM JN76 112030 -2 1593 S52KM UX7QV KN29 112045 -9 1594 CQ S52KM JN76 112100 -2 1593 S52KM UX7QV KN29 112115 -7 1594 CQ S52KM JN76 112130 -1 1593 S52KM UX7QV KN29 112130 -14 1907 S52KM DK7ZT -13 112145 -10 1594 IQ4JO S52KM +12 112200 -18 1906 S52KM DK7ZT -13 112215 -13 1594 IQ4JO S52KM RRR 112230 -14 1907 S52KM DK7ZT -13
FT8DB and SO8OO WebSDR are a hobby project maintained solo. ☕ Buy me a coffee