DO7LJ — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving DO7LJ, decoded by SO8OO in southeastern Poland. 43 FT8 messages attributed to this token as transmitter, on 160m, 80m, 10m, across 7 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-09-18.
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 43 FT8 messages attributed to DO7LJ as the transmitting token by decoded message structure across 7 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (81%), followed by 10 m (16%) and 160 m (2%). Most decodes (81%) fell within the six-hour window 16:00-22:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -7 dB.
Overview
Bands
Last attributed message: 2026-09-18 04:08 UTC
Observed FT8 message patterns
- Attributed sample
- 43 messages
- Active dates
- 7 UTC dates
- Estimated median S/N
- -7 dB
- Estimated 10th-90th percentile
- -19 to +4 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 11, moderate (-15 to -9 dB) 7, strong (≥ -8 dB) 25.
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 DO7LJ 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 DO7LJ
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
- JO30 · 20 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 1,053 km (approx.)
- Last such locator decoded
- 2026-09-18 04:07 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 | DO7LJ S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 09-18 04:07 | 80m | +1 / -5 | DO9BAU | +6 / -2 | 5 | ✓ Full exchange observed |
| 09-18 04:05 | 80m | - / - | ON5HE | -2 / - | 3 | Partial capture |
| 09-18 04:03 | 80m | -5 / +2 | SO100PKP | +16 / -7 | 3 | Partial capture |
| 09-18 04:01 | 80m | +5 / - | HB9CXZ | +8 / - | 3 | ✓ Closing observed |
| 09-18 03:58 | 160m | - / -11 | DO4ATK | -9 / - | 2 | ✓ Closing fragment |
| 08-13 18:33 | 80m | -16 / -4 | OK1HWS | +4 / -11 | 5 | ✓ Full exchange observed |
| 07-30 21:28 | 80m | -9 / +9 | DG4BZ | -4 / -3 | 5 | ✓ Full exchange observed |
| 07-30 21:26 | 80m | - / -2 | DL2VN | -17 / - | 2 | ✓ Closing fragment |
| 07-30 21:23 | 80m | -6 / - | EW8AAC | - / - | 2 | Partial capture |
| 07-07 21:44 | 160m | - / +10 | DD3KF | -16 / - | 2 | ✓ Closing fragment |
| 07-07 21:36 | 80m | +1 / - | DB4SNK | - / 0 | 3 | ✓ Closing fragment |
| 07-07 21:33 | 80m | -5 / -12 | DL1UDO | -3 / +1 | 5 | ✓ Full exchange observed |
| 07-07 21:31 | 80m | +4 / -12 | RC6OD | +9 / -8 | 5 | ✓ Full exchange observed |
| 07-07 21:26 | 80m | -15 / -10 | SP9UOP | +11 / - | 3 | ✓ Closing observed |
| 07-07 16:32 | 10m | -17 / - | UA4FKT | - / -11 | 2 | Partial capture |
| 07-07 16:27 | 10m | -16 / - | <...> | - / - | 2 | Partial capture |
| 07-02 21:34 | 80m | - / +1 | TM2WWA | -10 / - | 3 | ✓ Closing fragment |
| 07-02 21:34 | 80m | -8 / -14 | UA4FKT | +2 / -3 | 4 | ✓ Full exchange observed |
| 07-02 21:32 | 80m | -9 / -13 | SV1SSL | -14 / -13 | 5 | ✓ Full exchange observed |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 183400 -20 1800 OK1HWS DO7LJ 73 040130 +5 2121 HB9CXZ DO7LJ JO30 040145 +5 2121 DO7LJ HB9CXZ +14 (x2) 040345 -5 1977 SO100PKP DO7LJ JO30 040400 +16 1977 DO7LJ SO100PKP +02 040415 -5 1978 SO100PKP DO7LJ R-07 040530 +1 859 DO7LJ ON5HE JO20 (x3) 040700 -3 2402 DO9BAU DO7LJ JO30 040715 +5 2403 DO7LJ DO9BAU -05 040730 +1 2403 DO9BAU DO7LJ R-02 040745 +6 2403 DO7LJ DO9BAU RR73 040800 +6 2403 DO9BAU DO7LJ 73
UTC dB Audio Message 214445 -16 1833 DO7LJ DD3KF +10 (x2) 035430 -24 1402 DO2ZZ DO7LJ JO30 035800 -8 1215 DO7LJ DO4ATK -11 (x2)
UTC dB Audio Message 085100 -19 1326 LA6JEA DO7LJ 73 162745 -14 1232 <...> DO7LJ JO30 (x2) 162930 -18 1428 HA9GKL DO7LJ JO30 163200 -16 1426 UA4FKT DO7LJ -11 (x2) 164745 -24 1631 EA5UI DO7LJ 73
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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