F4FSV — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving F4FSV, decoded by SO8OO in southeastern Poland. 18 FT8 messages attributed to this token as transmitter, on 80m, 10m, across 2 UTC dates in the available aggregate history. Observed between 2026-06-13 and 2026-09-03.
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 18 FT8 messages attributed to F4FSV as the transmitting token by decoded message structure across 2 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (83%), followed by 10 m (17%). In this small sample, the estimated median decoder S/N was -18 dB; no usual signal pattern is inferred.
Overview
Bands
Last attributed message: 2026-09-03 18:30 UTC
Observed FT8 message patterns
- Attributed sample
- 18 messages
- Active dates
- 2 UTC dates
- Estimated median S/N
- -18 dB
- S/N percentile sample
- Too small
- Recurring-pattern threshold
- Not met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 16, moderate (-15 to -9 dB) 2, 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 F4FSV in decoded directed-looking exchanges:
Most frequent locator attributed to F4FSV
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
- IN93 · 7 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 1,870 km (approx.)
- Last such locator decoded
- 2026-09-03 18:30 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 | F4FSV S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 09-03 18:25 | 80m | -18 / -5 | DL5DQZ | +2 / - | 5 | ✓ Closing observed |
| 09-03 18:19 | 80m | -18 / -21 | UB3ANV | -4 / -15 | 5 | ✓ Full exchange observed |
| 09-03 18:16 | 80m | -19 / -23 | IK8UHA | -12 / -2 | 3 | Partial capture |
| 09-03 18:13 | 80m | -16 / - | DO9FSE | - / -3 | 2 | Partial capture |
| 09-03 18:13 | 80m | -15 / -1 | F5LVR | -17 / - | 3 | ✓ Closing observed |
| 09-03 18:08 | 80m | - / - | OK1YQ | +8 / - | 2 | ✓ Closing fragment |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 181615 -19 1059 IK8UHA F4FSV -02 181630 -11 1417 F4FSV IK8UHA R-23 181715 -16 1059 GE7RTI F4FSV -03 181945 -18 1059 UB3ANV F4FSV IN93 182000 -6 506 F4FSV UB3ANV -21 182015 -16 1059 UB3ANV F4FSV R-15 182030 -3 505 F4FSV UB3ANV RR73 182045 -19 1059 UB3ANV F4FSV 73 182500 +8 918 F4FSV DL5DQZ JO61 182515 -18 991 UA9YDR F4FSV IN93 182530 +6 918 F4FSV DL5DQZ JO61 (x2) 182615 -18 991 DL5DQZ F4FSV RR73 182630 -3 918 F4FSV DL5DQZ 73 183030 -22 1054 CQ DX F4FSV IN93
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