SP7MZS — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving SP7MZS, decoded by SO8OO in southeastern Poland. 7 FT8 messages attributed to this token as transmitter, on 40m, across 4 UTC dates in the available aggregate history. Observed between 2026-07-31 and 2026-09-14.
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 7 FT8 messages attributed to SP7MZS as the transmitting token by decoded message structure across 4 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 -21 dB; no usual signal pattern is inferred.
Overview
Observed FT8 message patterns
- Attributed sample
- 7 messages
- Active dates
- 4 UTC dates
- Estimated median S/N
- -21 dB
- S/N percentile sample
- Too small
- Recurring-pattern threshold
- Not met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 6, moderate (-15 to -9 dB) 1, strong (≥ -8 dB) 0.
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 SP7MZS in decoded directed-looking exchanges:
Most frequent locator attributed to SP7MZS
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
- JO91 · 4 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 262 km (approx.)
- Last such locator decoded
- 2026-09-14 14:21 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 | SP7MZS S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 09-14 14:20 | 40m | -23 / - | LA8ENA | - / - | 3 | Partial capture |
| 09-12 17:37 | 40m | -18 / -5 | HG8LXL | -12 / -5 | 2 | Partial capture |
| 09-11 12:24 | 40m | -24 / - | HG8LXL | -5 / - | 5 | Partial capture |
| 09-09 14:34 | 40m | - / -13 | SN100PKP | -1 / - | 2 | Partial capture |
| 08-30 13:20 | 20m | - / - | F1PPH | -6 / - | 2 | Partial capture |
| 08-30 13:16 | 20m | - / - | PD1HPB | -10 / - | 2 | Partial capture |
| 08-30 13:15 | 20m | - / - | ON3BM | 0 / - | 2 | Partial capture |
| 07-31 18:36 | 40m | -14 / - | F5RRS | -18 / - | 4 | Partial capture |
| 07-22 16:07 | 20m | - / 0 | CN2DX | -8 / - | 2 | ✓ Closing fragment |
| 07-07 14:23 | 20m | - / -14 | DL3MIB | -16 / - | 3 | Partial capture |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 183700 -17 2058 SP7MZS F5RRS JN36 (x2) 143430 -1 1180 SP7MZS SN100PKP -13 (x2) 122245 -18 2123 HF100PKP SP7MZS JO91 122430 -5 1648 SP7MZS HG8LXL KN06 (x2) 122515 -24 2124 HG8LXL SP7MZS +11 122530 -10 1648 SP7MZS HG8LXL KN06 (x2) 173730 -18 2183 HG8LXL SP7MZS -05 173745 -12 1647 SP7MZS HG8LXL R-05 142015 -21 1743 LA8ENA SP7MZS JO91 (x3)
UTC dB Audio Message 152415 -14 257 SP7MZS 4X1UF -04 103930 -18 1901 SP7MZS R4FDW -16 160730 -4 1780 SP7MZS CN2DX +00 (x2) 161400 -6 2495 SP7MZS TF4M -18 161430 -10 2495 SP7MZS RR73; EA4IFN <...> -10 132430 -14 929 SP7MZS DL3EBJ -04 131345 +2 2099 SP7MZS UA3DCG -09 131345 +5 2215 SP7MZS IQ4JO JN63 131515 -1 2108 SP7MZS ON3BM JO10 (x2) 131645 -11 2108 SP7MZS PD1HPB JO22 (x2) 132015 -6 2109 SP7MZS F1PPH JN07 (x2)
UTC dB Audio Message 150100 -16 2348 SP7MZS LZ1JZ -09
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.
FT8DB and SO8OO WebSDR are a hobby project maintained solo. ☕ Buy me a coffee