F4JDD — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving F4JDD, decoded by SO8OO in southeastern Poland. 1 FT8 messages attributed to this token as transmitter, on 40m, across 1 UTC dates in the available aggregate history. Last observed 2026-09-20.
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 1 FT8 messages attributed to F4JDD as the transmitting token by decoded message structure across 1 UTC dates in the available aggregate history. The available sample contains attributed decodes on 40 m (100%). The sample is too small to infer a recurring UTC-hour or received-S/N pattern.
Overview
Observed FT8 message patterns
- Attributed sample
- 1 messages
- Active dates
- 1 UTC dates
- S/N summary
- Too few decodes
- S/N percentile sample
- Too small
- Recurring-pattern threshold
- Not met
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 F4JDD in decoded directed-looking exchanges:
Most frequent locator attributed to F4JDD
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
- JN09
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 1,491 km (approx.)
- Last such locator decoded
- 2026-09-20 18:42 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 | F4JDD S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 09-20 18:50 | 40m | - / +2 | ON1DGN | -4 / - | 5 | ✓ Closing fragment |
| 09-20 18:48 | 40m | - / -4 | OS4K | -10 / - | 3 | Partial capture |
| 09-20 18:48 | 40m | - / - | OK7MZ | -1 / - | 5 | Partial capture |
| 09-20 18:44 | 40m | - / - | PA3BRB | -1 / - | 3 | ✓ Closing fragment |
| 09-20 12:44 | 40m | - / - | OK3MB | -5 / - | 2 | Partial capture |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 184430 +0 1541 F4JDD PA3BRB JO32 (x2) 184800 +2 1459 F4JDD OK7MZ JN89 184830 -12 2480 F4JDD OS4K -04 184830 +3 1459 F4JDD OK7MZ JN89 184900 -6 2480 F4JDD OS4K -04 184900 +1 1459 F4JDD OK7MZ JN89 184930 -13 2480 F4JDD OS4K -04 184930 -6 1459 F4JDD OK7MZ JN89 185000 -5 1586 F4JDD ON1DGN +02 185000 -5 1459 F4JDD OK7MZ JN89 185030 -6 1587 F4JDD ON1DGN +02 (x4)
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