KD4UO — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving KD4UO, decoded by SO8OO in southeastern Poland. 14 FT8 messages attributed to this token as transmitter, on 20m, across 3 UTC dates in the available aggregate history. Observed between 2026-08-24 and 2026-08-26.
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 14 FT8 messages attributed to KD4UO as the transmitting token by decoded message structure across 3 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (100%). In this small sample, the estimated median decoder S/N was -21 dB; no usual signal pattern is inferred.
Overview
Observed FT8 message patterns
- Attributed sample
- 14 messages
- Active dates
- 3 UTC dates
- Estimated median S/N
- -21 dB
- S/N percentile sample
- Too small
- Recurring-pattern threshold
- Not met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 14, 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 KD4UO in decoded directed-looking exchanges:
Most frequent locator attributed to KD4UO
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
- EM84 · 10 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 8,079 km (approx.)
- Last such locator decoded
- 2026-08-26 22:47 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 | KD4UO S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 08-28 14:40 | 20m | - / -21 | M7VME | -3 / - | 3 | Partial capture |
| 08-27 22:54 | 40m | - / -11 | PT7YV | -8 / - | 2 | ✓ Closing fragment |
| 08-26 22:46 | 20m | -24 / - | G3MTL | - / - | 2 | Partial capture |
| 08-26 22:32 | 20m | - / -15 | M0YMJ | -6 / - | 2 | ✓ Closing fragment |
| 08-25 22:44 | 20m | -20 / - | OY1HJ | - / - | 2 | Partial capture |
| 08-24 23:20 | 20m | - / -4 | KJ4HI | -20 / - | 2 | ✓ Closing fragment |
| 08-24 23:16 | 20m | - / -5 | N4DMV | -11 / - | 2 | ✓ Closing fragment |
| 08-24 23:08 | 20m | - / -1 | HC7AE | -17 / - | 2 | ✓ Closing fragment |
| 08-24 23:02 | 20m | - / -10 | ON5UE | -11 / - | 8 | ✓ Closing fragment |
| 08-24 22:50 | 20m | -22 / - | VE5UFO | - / -9 | 4 | Partial capture |
| 08-24 22:47 | 20m | -22 / - | K1XHX | - / -18 | 4 | ✓ Closing fragment |
| 07-21 07:36 | 20m | - / - | PD1ADA | -12 / - | 4 | Partial capture |
| 07-21 07:05 | 20m | - / - | F8NHF | -18 / - | 2 | Partial capture |
| 07-18 20:00 | 20m | - / -23 | RU3SD | -11 / - | 4 | ✓ Closing fragment |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 230900 -17 1872 KD4UO HC7AE RR73 231600 -10 274 KD4UO N4DMV -05 (x2) 232000 -23 2198 KD4UO KJ4HI -04 (x2) 224000 -18 1320 N1LWK KD4UO EM84 224400 -21 1320 OY1HJ KD4UO EM84 (x2) 223200 -6 1554 KD4UO M0YMJ -15 (x2) 224630 -24 1623 G3MTL KD4UO EM84 (x2) 144015 -5 971 KD4UO M7VME -21 (x3)
UTC dB Audio Message 224545 -17 983 KD4UO F4MBU -15 225445 -8 2055 KD4UO PT7YV -11 (x2)
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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