UA9LFJ — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving UA9LFJ, decoded by SO8OO in southeastern Poland. 11 FT8 messages attributed to this token as transmitter, on 160m, 80m, across 4 UTC dates in the available aggregate history. Observed between 2026-06-23 and 2026-09-10.
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 11 FT8 messages attributed to UA9LFJ as the transmitting token by decoded message structure across 4 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (55%), followed by 160 m (45%). In this small sample, the estimated median decoder S/N was -11 dB; no usual signal pattern is inferred.
Overview
Bands
Last attributed message: 2026-09-10 18:33 UTC
Observed FT8 message patterns
- Attributed sample
- 11 messages
- Active dates
- 4 UTC dates
- Estimated median S/N
- -11 dB
- S/N percentile sample
- Too small
- Recurring-pattern threshold
- Not met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 5, moderate (-15 to -9 dB) 1, strong (≥ -8 dB) 5.
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 UA9LFJ in decoded directed-looking exchanges:
Most frequent locator attributed to UA9LFJ
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
- MO27 · 6 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 2,909 km (approx.)
- Last such locator decoded
- 2026-09-10 18:29 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 | UA9LFJ S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 09-23 04:06 | 40m | - / -11 | R1AV | -14 / - | 2 | Partial capture |
| 09-22 14:31 | 40m | - / +2 | R3KJF | -7 / - | 4 | ✓ Closing fragment |
| 09-22 14:29 | 40m | - / -4 | R7DX | -6 / - | 3 | ✓ Closing fragment |
| 09-22 14:27 | 40m | - / -13 | DK7ZT | -9 / - | 3 | Partial capture |
| 09-22 14:27 | 40m | - / - | 9A3K | +16 / - | 4 | Partial capture |
| 09-21 14:59 | 160m | - / -10 | RA3DA | -12 / - | 3 | ✓ Closing fragment |
| 09-19 14:36 | 80m | - / -2 | RY3D | +1 / - | 3 | ✓ Closing fragment |
| 09-10 18:34 | 80m | - / - | EW8CW | 0 / - | 3 | Partial capture |
| 09-10 18:29 | 80m | -2 / -11 | Z62NS | +7 / -12 | 10 | ✓ Full exchange observed |
| 09-10 18:14 | 80m | - / - | UA3ON | -5 / - | 2 | Partial capture |
| 09-06 17:48 | 160m | - / -21 | RT2P | 0 / - | 4 | Partial capture |
| 09-06 17:43 | 160m | - / - | RT2P | +1 / - | 5 | Partial capture |
| 09-06 17:41 | 160m | - / -16 | RA1AGX | -16 / - | 2 | ✓ Closing fragment |
| 09-06 17:37 | 160m | - / -12 | UG4L | -16 / - | 4 | ✓ Closing fragment |
| 09-06 17:34 | 160m | - / -20 | RT2P | -5 / - | 10 | Partial capture |
| 09-06 17:32 | 160m | - / -6 | UA4FKT | -16 / - | 2 | Partial capture |
| 09-06 17:32 | 160m | - / -11 | UB6OAJ | -12 / - | 2 | Partial capture |
| 09-06 00:37 | 160m | - / - | F4UJU | -18 / - | 3 | Partial capture |
| 09-06 00:35 | 160m | - / -17 | F1PBZ | -5 / - | 2 | Partial capture |
| 09-06 00:33 | 160m | -22 / -13 | HA7TM | +15 / +9 | 5 | ✓ Full exchange observed |
| 08-29 17:44 | 160m | - / -16 | R2ATY | -20 / - | 2 | ✓ Closing fragment |
| 08-29 17:31 | 160m | - / -19 | RZ3DX | -6 / - | 4 | ✓ Closing fragment |
| 08-29 17:29 | 160m | - / -13 | RA7T | -9 / - | 3 | ✓ Closing fragment |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 142745 -10 1906 UA9LFJ DK7ZT -13 142745 +15 2569 UA9LFJ 9A3K JN65 142815 -4 1906 UA9LFJ DK7ZT -13 (x2) 142845 +17 2459 UA9LFJ 9A3K JN65 (x2) 142945 -3 1731 UA9LFJ R7DX KN84 (x3) 143115 -7 1978 UA9LFJ R3KJF KO91 (x4) 040600 -14 1537 UA9LFJ R1AV R-11 (x2)
UTC dB Audio Message 174315 +5 304 UA9LFJ RT2P KO84 (x5) 174715 -19 1848 UA9LFJ UA1TAN RR73 174815 -2 304 UA9LFJ RT2P -21 (x5) 174145 -14 1402 UA9LFJ R7AW -25 145900 -13 1908 UA9LFJ RA3DA KO95 (x3)
UTC dB Audio Message 183100 +8 1355 UA9LFJ Z62NS -11 (x4) 183245 -3 1517 Z62NS UA9LFJ R-12 183300 +5 1355 UA9LFJ Z62NS RR73 183315 +4 1517 Z62NS UA9LFJ R-12 183330 +4 1355 UA9LFJ Z62NS RR73 183345 -2 1517 Z62NS UA9LFJ 73 183400 +1 910 UA9LFJ EW8CW KO52 (x3) 143630 +3 405 UA9LFJ RY3D -02 (x3)
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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