I4VBO — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving I4VBO, decoded by SO8OO in southeastern Poland. 83 FT8 messages attributed to this token as transmitter, on 40m, across 4 UTC dates in the available aggregate history. Observed between 2026-06-10 and 2026-06-27.
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 83 FT8 messages attributed to I4VBO as the transmitting token by decoded message structure across 4 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (100%). Most decodes (82%) fell within the six-hour window 13:00-19:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -7 dB.
Overview
Observed FT8 message patterns
- Attributed sample
- 83 messages
- Active dates
- 4 UTC dates
- Estimated median S/N
- -7 dB
- Estimated 10th-90th percentile
- -15 to +1 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 6, moderate (-15 to -9 dB) 29, strong (≥ -8 dB) 48.
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.
Frequent counterpart tokens observed at SO8OO
Tokens most often paired with I4VBO in decoded directed-looking exchanges:
Most frequent locator attributed to I4VBO
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
- JN44 · 51 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 1,137 km (approx.)
- Last such locator decoded
- 2026-06-27 16:57 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 | I4VBO S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 07-02 17:05 | 40m | - / -3 | 9A5M | -16 / - | 2 | ✓ Closing fragment |
| 07-02 16:41 | 40m | - / -19 | DL0SOP | -9 / - | 5 | Partial capture |
| 06-27 16:18 | 40m | -18 / - | EA2CVV | - / -20 | 2 | Partial capture |
| 06-24 15:10 | 40m | - / - | SQ9BDB | -7 / - | 4 | Partial capture |
| 06-24 14:12 | 40m | - / +3 | S58MU | -16 / - | 2 | ✓ Closing fragment |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 151215 -10 2235 I4VBO SQ9BDB JO90 151445 -18 1634 I4VBO OK1HEH +01 161830 -19 1087 EA2CVV I4VBO R-20 (x2) 165715 -14 833 <...> I4VBO JN44 (x3) 164100 -8 672 I4VBO DL0SOP -19 (x5) 164330 -8 672 I4VBO RR73; DF3QG <...> +10 170530 -13 1179 I4VBO 9A5M -03 (x2)
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