DJ3BF — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving DJ3BF, decoded by SO8OO in southeastern Poland. 21 FT8 messages attributed to this token as transmitter, on 40m, 20m, across 4 UTC dates in the available aggregate history. Observed between 2026-07-05 and 2026-08-23.
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 21 FT8 messages attributed to DJ3BF as the transmitting token by decoded message structure across 4 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (76%), followed by 40 m (24%). Several six-hour UTC windows tied for the largest share (71%), so no unique busiest interval is claimed. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -8 dB.
Overview
Bands
Last attributed message: 2026-08-23 10:18 UTC
Observed FT8 message patterns
- Attributed sample
- 21 messages
- Active dates
- 4 UTC dates
- Estimated median S/N
- -8 dB
- Estimated 10th-90th percentile
- -15 to +3 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 2, moderate (-15 to -9 dB) 8, strong (≥ -8 dB) 11.
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 DJ3BF in decoded directed-looking exchanges:
Attributed messages by UTC hour
Rolling 90-day UTC chart window. Counts follow decoded message structure: the first token for CQ, or the second token in a directed-looking message.
Most frequent locator attributed to DJ3BF
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
- JO31 · 11 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 1,054 km (approx.)
- Last such locator decoded
- 2026-08-23 10:17 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 | DJ3BF S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 08-23 10:17 | 20m | +3 / - | TT1GD | - / -15 | 3 | ✓ Closing fragment |
| 07-15 06:35 | 40m | -15 / - | SM6ONT | - / 0 | 5 | ✓ Closing fragment |
| 07-13 20:08 | 20m | -11 / -7 | TN8GD | -6 / +8 | 5 | ✓ Full exchange observed |
| 07-05 14:30 | 20m | -5 / - | Z61DX | -4 / - | 2 | ✓ Closing observed |
| 07-05 09:47 | 20m | -8 / - | R4FDP | - / -16 | 7 | ✓ Closing fragment |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 095115 -13 273 R4FDP DJ3BF JO31 (x3) 143045 -4 750 DJ3BF Z61DX RR73 143100 -5 750 Z61DX DJ3BF 73 191930 +7 880 RL9L/3 DJ3BF R-06 193345 -6 770 TN8GD DJ3BF JO31 (x2) 200900 -6 826 DJ3BF TN8GD -07 200915 -8 770 TN8GD DJ3BF R+08 200930 -6 827 DJ3BF TN8GD RR73 200945 -14 769 TN8GD DJ3BF 73 101745 +7 543 TT1GD DJ3BF JO31 (x3)
UTC dB Audio Message 063545 -17 1296 SM6ONT DJ3BF JO31 (x5)
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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