WA3SWJ — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving WA3SWJ, decoded by SO8OO in southeastern Poland. 78 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, across 3 UTC dates in the available aggregate history. Observed between 2026-06-18 and 2026-09-08.
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 78 FT8 messages attributed to WA3SWJ as the transmitting token by decoded message structure across 3 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (67%), followed by 40 m (26%) and 80 m (8%). Most decodes (79%) fell within the six-hour window 21:00-03:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -13 dB.
Overview
Bands
Last attributed message: 2026-09-08 02:23 UTC
Observed FT8 message patterns
- Attributed sample
- 78 messages
- Active dates
- 3 UTC dates
- Estimated median S/N
- -13 dB
- Estimated 10th-90th percentile
- -20 to +2 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 30, moderate (-15 to -9 dB) 23, 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 WA3SWJ 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 WA3SWJ
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
- FN41 · 36 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 6,791 km (approx.)
- Last such locator decoded
- 2026-08-20 22:47 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 | WA3SWJ S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 09-08 02:59 | 80m | - / -15 | OK1AMF | +10 / - | 3 | ✓ Closing fragment |
| 09-08 02:53 | 80m | - / -4 | DL1VVQ | -17 / - | 3 | ✓ Closing fragment |
| 09-08 02:42 | 80m | - / -7 | CT2GQA | -16 / - | 3 | ✓ Closing fragment |
| 09-08 02:40 | 80m | - / -8 | EA4EER | +1 / - | 3 | ✓ Closing fragment |
| 09-08 02:38 | 80m | - / - | RA6ZS | -16 / - | 2 | Partial capture |
| 09-08 02:37 | 80m | - / -18 | IQ4JO | +4 / - | 3 | ✓ Closing fragment |
| 09-08 02:27 | 80m | - / -19 | F4UJU | +1 / - | 3 | ✓ Closing fragment |
| 09-08 02:27 | 80m | - / - | IQ4JO | -1 / - | 3 | Partial capture |
| 09-08 02:27 | 80m | - / - | RA6ZS | +2 / - | 3 | Partial capture |
| 09-08 02:23 | 80m | - / - | DL1IGB | -22 / - | 2 | Partial capture |
| 09-08 02:21 | 80m | -22 / - | KQ4HWA | - / -7 | 2 | ✓ Closing fragment |
| 09-08 02:21 | 80m | -21 / - | DL3MIB | +3 / -10 | 7 | Partial capture |
| 09-08 02:20 | 80m | -20 / - | N4RLS | - / -6 | 2 | ✓ Closing fragment |
| 09-08 02:18 | 80m | - / - | PA3KUS | -1 / - | 2 | ✓ Closing fragment |
| 09-08 02:17 | 80m | - / -12 | 9A5E | +9 / - | 4 | ✓ Closing fragment |
| 09-08 02:15 | 80m | -19 / -6 | ON1JP | -20 / - | 3 | ✓ Closing observed |
| 08-21 15:28 | 20m | - / - | PD4RJ | -18 / - | 3 | Partial capture |
| 08-20 22:46 | 20m | +3 / - | PD2V | - / -7 | 2 | ✓ Closing fragment |
| 08-20 22:44 | 20m | +2 / - | TA3F | - / -16 | 4 | Partial capture |
| 08-20 22:42 | 20m | 0 / - | G3RPF | - / -8 | 2 | ✓ Closing fragment |
| 08-20 22:41 | 20m | 0 / - | UX1VT | - / -4 | 2 | ✓ Closing fragment |
| 08-20 22:39 | 20m | 0 / - | W3UDT | - / -8 | 2 | ✓ Closing fragment |
| 08-20 22:38 | 20m | -6 / - | 7Z1BQ | - / - | 2 | Partial capture |
| 08-20 22:37 | 20m | -6 / - | 8Z1IT | - / - | 2 | Partial capture |
| 08-20 22:36 | 20m | - / - | RA3ZH | -10 / - | 2 | Partial capture |
| 08-20 22:33 | 20m | -5 / - | 4L7T | -6 / -12 | 4 | ✓ Closing observed |
| 08-20 21:17 | 20m | - / -16 | OD5ET | +14 / - | 2 | ✓ Closing fragment |
| 08-20 21:12 | 20m | - / -18 | G0DEL | -10 / - | 2 | Partial capture |
| 08-20 21:10 | 20m | - / -14 | OD5ET | +7 / - | 2 | Partial capture |
| 08-20 21:10 | 20m | - / -16 | EC3A | 0 / - | 2 | ✓ Closing fragment |
| 08-20 21:00 | 20m | - / -3 | G0DEL | -19 / - | 3 | Partial capture |
| 08-20 20:57 | 20m | - / - | TA3F | -12 / - | 6 | Partial capture |
| 08-20 20:28 | 20m | - / - | PD1ADA | -10 / - | 2 | Partial capture |
| 08-20 20:24 | 20m | - / -16 | F5HND | +9 / - | 7 | ✓ Closing fragment |
| 08-20 20:24 | 20m | - / - | RA3GZ | -1 / - | 2 | Partial capture |
| 08-20 20:23 | 20m | - / -20 | F4LYJ | -4 / - | 8 | Partial capture |
| 08-20 20:21 | 20m | - / -5 | F6BTP | -6 / - | 2 | ✓ Closing fragment |
| 08-20 20:20 | 20m | - / -8 | M0ITJ | -2 / - | 2 | ✓ Closing fragment |
| 08-20 20:16 | 20m | - / - | M7JVT | 0 / - | 2 | Partial capture |
| 08-20 20:14 | 20m | - / - | LB8OH | +6 / - | 2 | Partial capture |
| 08-20 20:04 | 20m | - / - | M7JVT | +4 / - | 4 | Partial capture |
| 08-20 20:03 | 20m | - / - | DG5PW | 0 / - | 4 | Partial capture |
| 08-20 20:00 | 20m | - / -10 | PC9K | +10 / - | 3 | ✓ Closing fragment |
| 08-20 19:58 | 20m | - / - | RN3OG | -10 / - | 5 | Partial capture |
| 08-20 19:54 | 20m | - / 0 | PC9K | -2 / - | 4 | Partial capture |
| 08-20 19:54 | 20m | - / - | F5HND | +6 / - | 6 | Partial capture |
| 08-20 19:52 | 20m | - / - | M9KTM | -1 / - | 3 | ✓ Closing fragment |
| 08-20 19:50 | 20m | - / - | PC9K | -5 / - | 4 | Partial capture |
| 08-20 19:50 | 20m | - / -16 | RN6MA | +18 / - | 4 | Partial capture |
| 08-20 19:49 | 20m | - / -21 | R7GA | 0 / - | 5 | Partial capture |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 023830 -14 206 WA3SWJ RA6ZS KN98 (x2) 024030 +4 852 WA3SWJ EA4EER IN80 (x3) 024230 -13 1703 WA3SWJ CT2GQA IM58 (x3) 025300 -18 1703 WA3SWJ DL1VVQ -04 (x3) 025500 -4 1661 WA3SWJ SP5HZM JO92 025900 +8 1604 WA3SWJ OK1AMF JO60 (x3)
UTC dB Audio Message 224315 -1 2838 G3RPF WA3SWJ RR73 224345 +1 2838 CQ WA3SWJ FN41 224415 +3 2838 TA3F WA3SWJ -16 (x2) 224500 -2 816 WA3SWJ LZ2EW KN13 224515 +3 2838 TA3F WA3SWJ -16 (x2) 224615 +2 2838 PD2V WA3SWJ -07 (x2) 224715 +5 2838 CQ WA3SWJ FN41 (x2) 150300 -7 1104 WA3SWJ DF1WR JN39 152800 -16 1422 WA3SWJ PD4RJ JO33 (x3)
UTC dB Audio Message 224530 -14 2337 WA3SWJ F1PBZ RR73 224600 -17 1716 WA3SWJ UT4VL -19 (x3) 224730 +0 445 WA3SWJ IU0NAD JN62 (x4) 002030 -17 1236 WA3SWJ F1IQH JN27 002030 -14 1481 WA3SWJ DL1UDO JO31 002100 -21 1236 WA3SWJ F1IQH JN27 (x2) 002800 -14 1154 WA3SWJ RZ6AKF -14 (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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