F4FMA — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving F4FMA, decoded by SO8OO in southeastern Poland. 20 FT8 messages attributed to this token as transmitter, on 40m, 20m, across 2 UTC dates in the available aggregate history. Observed between 2026-06-13 and 2026-09-12.
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 20 FT8 messages attributed to F4FMA as the transmitting token by decoded message structure across 2 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (70%), followed by 40 m (30%). In this small sample, the estimated median decoder S/N was -8 dB; no usual signal pattern is inferred.
Overview
Bands
Last attributed message: 2026-09-12 20:27 UTC
Observed FT8 message patterns
- Attributed sample
- 20 messages
- Active dates
- 2 UTC dates
- Estimated median S/N
- -8 dB
- Estimated 10th-90th percentile
- -15 to +1 dB
- Recurring-pattern threshold
- Not met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 0, moderate (-15 to -9 dB) 8, strong (≥ -8 dB) 12.
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 F4FMA in decoded directed-looking exchanges:
Most frequent locator attributed to F4FMA
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
- JN14 · 12 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 1,537 km (approx.)
- Last such locator decoded
- 2026-09-12 20:27 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 | F4FMA S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 09-12 20:40 | 40m | - / -11 | F1IQH | -6 / - | 2 | ✓ Closing fragment |
| 09-12 20:38 | 40m | - / +3 | DL7ACA | 0 / - | 4 | ✓ Closing fragment |
| 09-12 20:26 | 40m | -10 / - | OZ1NIB | - / - | 2 | Partial capture |
| 09-12 20:21 | 40m | - / - | EA3AAY | -14 / - | 3 | Partial capture |
| 09-12 20:21 | 40m | - / -3 | PC2J | +4 / - | 5 | ✓ Closing fragment |
| 09-12 20:16 | 40m | -13 / - | OM1AMT | -20 / - | 2 | Partial capture |
| 08-28 20:30 | 40m | - / -8 | F4MID | -8 / - | 3 | ✓ Closing fragment |
| 08-28 20:26 | 40m | - / -5 | DK7ZT | -3 / - | 3 | Partial capture |
| 08-28 20:10 | 40m | - / -16 | SP6FME | -13 / - | 3 | ✓ Closing fragment |
| 07-21 19:55 | 40m | - / -8 | DK7ZT | -17 / - | 3 | Partial capture |
| 07-21 19:55 | 40m | - / -16 | OE6TNO | -6 / - | 4 | ✓ Closing fragment |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 202130 -15 241 CQ F4FMA JN14 202145 +4 271 F4FMA PC2J JO22 202145 -14 1439 F4FMA EA3AAY JN11 202215 +4 271 F4FMA PC2J JO22 202215 -13 1439 F4FMA EA3AAY JN11 202245 +1 271 F4FMA PC2J R-03 (x2) 202600 -9 329 OZ1NIB F4FMA JN14 (x2) 203845 +4 239 F4FMA DL7ACA JO40 (x4) 204045 -4 240 F4FMA F1IQH R-11 (x2)
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