JH5FVT — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving JH5FVT, decoded by SO8OO in southeastern Poland. 10 FT8 messages attributed to this token as transmitter, on 20m, across 1 UTC dates in the available aggregate history. Last observed 2026-06-19.
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 10 FT8 messages attributed to JH5FVT as the transmitting token by decoded message structure across 1 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 -12 dB; no usual signal pattern is inferred.
Overview
Observed FT8 message patterns
- Attributed sample
- 10 messages
- Active dates
- 1 UTC dates
- Estimated median S/N
- -12 dB
- S/N percentile sample
- Too small
- Recurring-pattern threshold
- Not met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 0, moderate (-15 to -9 dB) 10, 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 JH5FVT in decoded directed-looking exchanges:
Most frequent locator attributed to JH5FVT
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
- PM74 · 7 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 8,565 km (approx.)
- Last such locator decoded
- 2026-06-19 15:49 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 | JH5FVT S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 08-15 15:40 | 20m | - / -12 | SV2TTC | -12 / - | 2 | ✓ Closing fragment |
| 08-08 14:43 | 20m | - / -13 | LB5SK | -8 / - | 2 | ✓ Closing fragment |
| 08-08 07:16 | 20m | - / -9 | HI8UD | -4 / - | 2 | ✓ Closing fragment |
| 08-07 23:07 | 20m | - / -13 | 7X5CY | 0 / - | 2 | ✓ Closing fragment |
| 07-17 22:17 | 20m | - / -12 | 7X5CY | -5 / - | 5 | Partial capture |
| 07-16 21:58 | 20m | - / -15 | EC5K | +8 / - | 2 | ✓ Closing fragment |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 221730 -4 485 JH5FVT 7X5CY -12 (x5) 220345 -3 970 JH5FVT CT1EDA -23 144200 -11 2621 JH5FVT RK3AQ KO85 230700 +1 415 JH5FVT 7X5CY -13 (x2) 071645 -5 607 JH5FVT HI8UD -09 (x2) 144300 -5 2500 JH5FVT LB5SK -13 (x2) 154000 -14 808 JH5FVT SV2TTC -12 (x2)
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