KD4SR — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving KD4SR, decoded by SO8OO in southeastern Poland. 5 FT8 messages attributed to this token as transmitter, on 40m, across 2 UTC dates in the available aggregate history. Observed between 2026-09-14 and 2026-09-15.
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 5 FT8 messages attributed to KD4SR as the transmitting token by decoded message structure across 2 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (100%). In this small sample, the estimated median decoder S/N was -20 dB; no usual signal pattern is inferred.
Overview
Observed FT8 message patterns
- Attributed sample
- 5 messages
- Active dates
- 2 UTC dates
- Estimated median S/N
- -20 dB
- S/N percentile sample
- Too small
- Recurring-pattern threshold
- Not met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 5, moderate (-15 to -9 dB) 0, 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 KD4SR in decoded directed-looking exchanges:
Most frequent locator attributed to KD4SR
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
- EL98 · 4 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 8,464 km (approx.)
- Last such locator decoded
- 2026-09-15 00:14 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 | KD4SR S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 09-15 00:14 | 40m | -20 / - | DB26YLBB | - / - | 2 | Partial capture |
| 09-05 02:50 | 80m | - / -18 | DL1RWN | +15 / - | 3 | Partial capture |
| 08-24 00:07 | 40m | - / -7 | MI7XHT | -2 / - | 2 | Partial capture |
| 08-23 23:58 | 40m | - / - | S56KO | -16 / - | 2 | ✓ Closing fragment |
| 07-05 01:13 | 40m | - / -16 | A71UN | -16 / - | 2 | ✓ Closing fragment |
| 06-26 08:11 | 20m | - / - | DH1AKG | -14 / - | 4 | Partial capture |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 011300 -18 2197 KD4SR A71UN -16 (x2) 234545 -19 2321 KD4SR YO6LM RR73 235845 -24 2327 KD4SR S56KO RRR (x2) 000715 -3 2738 KD4SR MI7XHT IO64 (x2) 235930 -22 2190 W6J KD4SR EL98 000245 -19 2191 VP5/K5UR KD4SR EL98 001145 -21 1951 W6M KD4SR R-10 001400 -20 1965 DB26YLBB KD4SR EL98 (x2)
UTC dB Audio Message 012100 -24 1360 KD4SR K2K RR73 025015 +17 2647 KD4SR DL1RWN -18 (x3)
UTC dB Audio Message 081100 -17 2365 KD4SR DH1AKG JO60 (x4)
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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