F5EFK — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving F5EFK, decoded by SO8OO in southeastern Poland. 2 FT8 messages attributed to this token as transmitter, on 20m, across 1 UTC dates in the available aggregate history. Last observed 2026-06-07.
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 2 FT8 messages attributed to F5EFK as the transmitting token by decoded message structure across 1 UTC dates in the available aggregate history. The available sample contains attributed decodes on 20 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
- 2 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 F5EFK in decoded directed-looking exchanges:
Most frequent locator attributed to F5EFK
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
- IN87 · 2 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 1,830 km (approx.)
- Last such locator decoded
- 2026-06-07 15:34 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 | F5EFK S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 08-06 21:29 | 40m | - / - | EA3AAY | -23 / - | 2 | Partial capture |
| 08-06 20:37 | 40m | - / -20 | DB9LG | -6 / - | 2 | ✓ Closing fragment |
| 08-06 20:37 | 40m | - / - | DF1OE | -11 / - | 2 | Partial capture |
| 06-26 08:37 | 20m | - / -13 | DG7CF | -15 / - | 7 | Partial capture |
| 06-26 08:28 | 20m | - / - | F5IXN | -18 / - | 2 | Partial capture |
| 06-26 08:18 | 20m | - / - | DL1R | -13 / - | 3 | Partial capture |
| 06-26 08:13 | 20m | - / - | OE6OCG | -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 203700 -9 806 F5EFK DF1OE RRR (x2) 203730 -5 483 F5EFK DB9LG -20 (x2) 205700 -20 1735 F5EFK EA1AA RR73 212800 -17 1121 F5EFK DL1UDO RR73 212930 -22 1638 F5EFK EA3AAY JN11 (x2) 215030 -24 1688 F5EFK ON3DWG RR73
UTC dB Audio Message 081400 -4 1694 F5EFK OE6OCG JN77 (x2) 081600 -17 1695 F5EFK DL1R JN58 (x4) 082800 -16 1271 F5EFK F5IXN JN23 (x2) 083730 -12 1030 F5EFK DG7CF JN58 (x7)
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