K3SV — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving K3SV, decoded by SO8OO in southeastern Poland. 13 FT8 messages attributed to this token as transmitter, on 80m, 20m, across 2 UTC dates in the available aggregate history. Observed between 2026-06-26 and 2026-08-29.
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 13 FT8 messages attributed to K3SV 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 (85%), followed by 80 m (15%). In this small sample, the estimated median decoder S/N was -19 dB; no usual signal pattern is inferred.
Overview
Bands
Last attributed message: 2026-08-29 02:29 UTC
Observed FT8 message patterns
- Attributed sample
- 13 messages
- Active dates
- 2 UTC dates
- Estimated median S/N
- -19 dB
- S/N percentile sample
- Too small
- Recurring-pattern threshold
- Not met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 10, moderate (-15 to -9 dB) 3, 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 K3SV in decoded directed-looking exchanges:
Most frequent locator attributed to K3SV
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
- EL88
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 8,589 km (approx.)
- Last such locator decoded
- 2026-06-26 03:05 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 | K3SV S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 09-01 04:01 | 80m | - / -15 | EA1IOK | 0 / - | 3 | ✓ Closing fragment |
| 08-29 02:30 | 80m | - / -22 | DO1ID | +12 / - | 4 | ✓ Closing fragment |
| 08-29 02:28 | 80m | -13 / - | HI3QMT | - / -7 | 2 | ✓ Closing fragment |
| 08-25 19:58 | 20m | - / -15 | EA5N | +11 / - | 3 | ✓ Closing fragment |
| 06-26 03:12 | 20m | -18 / - | PA3KUS | - / -11 | 2 | ✓ Closing fragment |
| 06-26 03:11 | 20m | -20 / -21 | UB3GER | -12 / -17 | 7 | ✓ Full exchange observed |
| 06-26 03:08 | 20m | -17 / -8 | UT2AU | +1 / -11 | 5 | ✓ Full exchange observed |
| 06-26 03:08 | 20m | -18 / - | DK7ZT | - / +1 | 2 | ✓ Closing fragment |
| 06-26 03:05 | 20m | -20 / - | A91LD | - / - | 2 | ✓ Closing fragment |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 022830 -13 600 HI3QMT K3SV R-07 (x2) 023015 +11 382 K3SV DO1ID -22 (x4) 040130 +2 514 K3SV EA1IOK IN62 (x3)
UTC dB Audio Message 030945 -3 705 K3SV UT2AU 73 031030 -23 2157 UW8SM K3SV +01 031145 -9 956 K3SV UB3GER KO92 031200 -20 2157 PA3KUS K3SV -11 (x2) 031245 -9 956 K3SV UB3GER KO92 (x2) 031330 -20 2157 UB3GER K3SV -17 031345 -15 957 K3SV UB3GER R-21 031400 -21 2157 UB3GER K3SV RR73 031415 -12 957 K3SV UB3GER 73 032545 -18 1444 K3SV UT5ZC 73 195815 +10 584 K3SV EA5N -15 (x3)
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.
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