JH0KWZ — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving JH0KWZ, decoded by SO8OO in southeastern Poland. 6 FT8 messages attributed to this token as transmitter, on 40m, 20m, across 2 UTC dates in the available aggregate history. Observed between 2026-06-12 and 2026-09-05.
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 6 FT8 messages attributed to JH0KWZ 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 (50%), followed by 20 m (50%). In this small sample, the estimated median decoder S/N was -15 dB; no usual signal pattern is inferred.
Overview
Bands
Last attributed message: 2026-09-05 20:43 UTC
Observed FT8 message patterns
- Attributed sample
- 6 messages
- Active dates
- 2 UTC dates
- Estimated median S/N
- -15 dB
- S/N percentile sample
- Too small
- Recurring-pattern threshold
- Not met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 1, moderate (-15 to -9 dB) 4, strong (≥ -8 dB) 1.
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 JH0KWZ in decoded directed-looking exchanges:
Most frequent locator attributed to JH0KWZ
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
- PM97 · 2 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 8,513 km (approx.)
- Last such locator decoded
- 2026-09-05 20:18 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 | JH0KWZ S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 09-12 21:36 | 40m | - / -20 | OZ1AXG | +20 / - | 2 | ✓ Closing fragment |
| 09-09 21:12 | 40m | - / -13 | HB9EFK | +2 / - | 2 | ✓ Closing fragment |
| 09-05 20:51 | 40m | - / - | IU7XWD | -14 / - | 3 | Partial capture |
| 09-05 20:44 | 40m | - / - | SP6FME | -6 / - | 3 | Partial capture |
| 09-05 20:42 | 40m | - / - | 9A5E | -16 / - | 3 | Partial capture |
| 09-05 20:42 | 40m | -15 / -19 | ON4AOI | +7 / -10 | 3 | ✓ Full exchange observed |
| 09-05 20:42 | 40m | -16 / -19 | ON6AO | +2 / -10 | 6 | ✓ Full exchange observed |
| 09-05 20:21 | 40m | - / -21 | UR3LM | +18 / - | 3 | ✓ Closing fragment |
| 09-05 20:20 | 40m | - / -24 | LZ2INP | +4 / - | 2 | Partial capture |
| 09-05 20:19 | 40m | - / - | R2BHD | +12 / - | 2 | Partial capture |
| 08-09 20:27 | 40m | - / -21 | EA7ALL | +9 / - | 5 | ✓ Closing fragment |
| 08-06 20:58 | 40m | - / -15 | YO4NF | -15 / - | 3 | ✓ Closing fragment |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 204330 -16 2268 ON6AO JH0KWZ -10 204345 +1 2692 JH0KWZ ON6AO R-19 204345 -16 2170 JH0KWZ 9A5E JN75 204415 -4 2269 JH0KWZ SP6FME JO90 204415 +3 2692 JH0KWZ ON6AO 73 204445 -8 2268 JH0KWZ SP6FME JO90 204445 -17 2170 JH0KWZ 9A5E JN75 204515 -6 2268 JH0KWZ SP6FME JO90 205115 -17 1402 JH0KWZ IU7XWD JN80 (x3) 211215 +4 2009 JH0KWZ HB9EFK -13 (x2) 213600 +21 2789 JH0KWZ OZ1AXG -20 (x2)
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