DB7JB — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving DB7JB, decoded by SO8OO in southeastern Poland. 30 FT8 messages attributed to this token as transmitter, on 40m, across 1 UTC dates in the available aggregate history. Last observed 2026-08-24.
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 30 FT8 messages attributed to DB7JB as the transmitting token by decoded message structure across 1 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 -1 dB; no usual signal pattern is inferred.
Overview
Observed FT8 message patterns
- Attributed sample
- 30 messages
- Active dates
- 1 UTC dates
- Estimated median S/N
- -1 dB
- Estimated 10th-90th percentile
- -6 to +6 dB
- Recurring-pattern threshold
- Not met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 0, moderate (-15 to -9 dB) 0, strong (≥ -8 dB) 30.
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 DB7JB in decoded directed-looking exchanges:
Most frequent locator attributed to DB7JB
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
- JN58 · 11 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 799 km (approx.)
- Last such locator decoded
- 2026-08-24 22:09 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 | DB7JB S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 08-24 22:09 | 40m | -1 / - | IU0POV | - / -9 | 3 | ✓ Closing fragment |
| 08-24 22:07 | 40m | -2 / - | PD0LBY | - / +6 | 2 | ✓ Closing fragment |
| 08-24 22:06 | 40m | +7 / -12 | DL5YAS | +2 / - | 6 | ✓ Closing observed |
| 08-24 22:02 | 40m | +2 / - | R0ADN | - / -15 | 7 | ✓ Closing fragment |
| 08-24 21:58 | 40m | -4 / -6 | RX9ABI | -3 / -12 | 9 | ✓ Full exchange observed |
| 08-24 21:58 | 40m | -4 / - | YO2CIP | - / -12 | 3 | ✓ Closing fragment |
| 08-24 21:56 | 40m | -4 / +1 | M0MLS | -6 / +9 | 5 | ✓ Full exchange observed |
| 08-24 21:49 | 40m | +5 / - | M6MHG | -11 / 0 | 4 | ✓ Closing observed |
| 08-24 21:48 | 40m | +2 / -7 | HB9EXE | -20 / -5 | 4 | ✓ Full exchange observed |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 220415 +4 1644 R0ADN DB7JB R-15 (x4) 220615 +7 994 DL5YAS DB7JB JN58 (x2) 220715 +2 994 PD0LBY DB7JB +06 220730 +3 1100 DB7JB DL5YAS -12 220745 -6 994 PD0LBY DB7JB 73 220800 +2 1100 DB7JB DL5YAS -12 (x2) 220845 +6 994 DL5YAS DB7JB 73 220945 -3 994 IU0POV DB7JB JN58 (x3)
FT8DB and SO8OO WebSDR are a hobby project maintained solo. ☕ Buy me a coffee