UA3GDJ — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving UA3GDJ, decoded by SO8OO in southeastern Poland. 5,145 FT8 messages attributed to this token as transmitter, on 40m, 20m, across 71 UTC dates in the available aggregate history. Observed between 2026-06-07 and 2026-10-11.
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 5,145 FT8 messages attributed to UA3GDJ as the transmitting token by decoded message structure across 71 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (61%), followed by 20 m (39%). Most decodes (62%) fell within the six-hour window 12:00-18:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (66%); the estimated median was -4.8 dB.
Overview
Bands
Last attributed message: 2026-10-11 14:19 UTC
Observed FT8 message patterns
- Attributed sample
- 5,145 messages
- Active dates
- 71 UTC dates
- Estimated median S/N
- -4.8 dB
- Estimated 10th-90th percentile
- -17.9 to +5.3 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 803, moderate (-15 to -9 dB) 972, strong (≥ -8 dB) 3,370.
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 UA3GDJ 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 UA3GDJ
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
- KO92 · 2,777 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 1,229 km (approx.)
- Last such locator decoded
- 2026-10-11 14:19 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 | UA3GDJ S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 10-11 14:18 | 40m | -9 / - | YD8VJI | - / - | 2 | Partial capture |
| 10-11 14:17 | 40m | -2 / - | UN2NC | - / -19 | 2 | ✓ Closing fragment |
| 10-11 14:13 | 40m | -2 / +3 | RZ3DAB | -8 / +2 | 6 | ✓ Full exchange observed |
| 10-11 14:08 | 40m | -10 / - | YD8VJI | - / - | 4 | Partial capture |
| 10-11 14:05 | 40m | -9 / - | RD3BZ | -21 / +6 | 4 | ✓ Full exchange observed |
| 10-11 14:04 | 40m | -10 / - | RL8C | - / -8 | 3 | ✓ Closing fragment |
| 10-11 13:56 | 40m | -10 / -24 | IQ3ABC | -6 / - | 3 | Partial capture |
| 10-11 13:53 | 40m | -5 / - | R4LCH | - / 0 | 3 | ✓ Closing fragment |
| 10-11 13:47 | 40m | -9 / - | R6AAU | - / - | 2 | ✓ Closing fragment |
| 10-11 13:42 | 40m | -6 / - | BG9EQM | - / - | 2 | Partial capture |
| 10-11 13:38 | 40m | -6 / - | UB3FCP | - / -5 | 3 | ✓ Closing fragment |
| 10-11 13:26 | 40m | -6 / - | OZ1ADL | - / -12 | 3 | ✓ Closing fragment |
| 10-11 13:23 | 40m | -12 / - | YC9HJD | - / - | 4 | Partial capture |
| 10-11 13:21 | 40m | -11 / - | R3WDU | - / 0 | 3 | ✓ Closing fragment |
| 10-11 12:29 | 40m | -9 / -3 | R80SAA | -6 / +6 | 5 | ✓ Full exchange observed |
| 10-11 04:40 | 40m | -15 / - | IZ4EFV | - / -16 | 3 | ✓ Closing fragment |
| 10-11 04:38 | 40m | -14 / - | PY2JMH | - / -26 | 4 | ✓ Closing fragment |
| 10-11 04:31 | 40m | -6 / -15 | F4IFO | -19 / - | 3 | Partial capture |
| 10-11 04:30 | 40m | +3 / - | DL4MCA | - / - | 2 | Partial capture |
| 10-11 04:27 | 40m | +1 / - | SP5MIG | - / -13 | 2 | ✓ Closing fragment |
| 10-11 04:26 | 40m | -8 / - | TA3XEE | - / -13 | 2 | ✓ Closing fragment |
| 10-11 04:23 | 40m | -8 / -16 | DC9TS | -18 / - | 5 | ✓ Closing observed |
| 10-11 04:20 | 40m | -8 / - | YY5EHT | - / - | 2 | Partial capture |
| 10-11 04:19 | 40m | -4 / - | DC9TS | - / - | 3 | Partial capture |
| 10-11 04:16 | 40m | -11 / -8 | F4MPI | -23 / -15 | 4 | ✓ Full exchange observed |
| 10-11 04:14 | 40m | +1 / - | KR4HRN | - / - | 3 | Partial capture |
| 10-10 05:18 | 40m | -8 / - | R1TET | - / -7 | 2 | ✓ Closing fragment |
| 10-10 05:16 | 40m | -4 / - | SV9QWC | - / -18 | 4 | ✓ Closing fragment |
| 10-10 04:35 | 40m | -5 / - | CA7RWK | - / -23 | 3 | ✓ Closing fragment |
| 10-10 04:04 | 40m | -10 / - | YY5EHT | - / - | 2 | Partial capture |
| 10-10 04:00 | 40m | -3 / - | YY5EHT | - / - | 2 | Partial capture |
| 10-10 03:50 | 40m | -4 / - | DF1DJ | - / -8 | 2 | ✓ Closing fragment |
| 10-10 03:41 | 40m | - / -13 | R7ZY | +14 / - | 2 | ✓ Closing fragment |
| 10-10 03:36 | 40m | - / -6 | HB9FMO | -8 / - | 2 | ✓ Closing fragment |
| 10-10 03:28 | 40m | - / -5 | RN4SN | -2 / - | 3 | ✓ Closing fragment |
| 10-09 15:16 | 40m | -1 / -6 | RU1QX | -8 / +10 | 10 | ✓ Full exchange observed |
| 10-09 15:12 | 40m | -3 / - | PA0WDN | - / - | 2 | Partial capture |
| 10-09 15:07 | 40m | -6 / - | R6OV | -15 / - | 3 | ✓ Closing observed |
| 10-09 15:03 | 40m | +10 / - | SP6TID | -4 / -12 | 5 | ✓ Closing observed |
| 10-09 15:00 | 40m | -1 / - | G0DEL | - / -14 | 3 | ✓ Closing fragment |
| 10-09 14:54 | 40m | -4 / - | RU1QX | - / - | 9 | Partial capture |
| 10-08 16:12 | 40m | 0 / - | IK8NKQ | - / -20 | 3 | ✓ Closing fragment |
| 10-08 16:05 | 40m | -5 / - | G5MJF | - / -23 | 3 | ✓ Closing fragment |
| 10-08 16:01 | 40m | -2 / +2 | YO3KWJ | +1 / -14 | 4 | ✓ Full exchange observed |
| 10-08 15:57 | 40m | -2 / - | YO5LNX | - / -16 | 3 | ✓ Closing fragment |
| 10-08 15:55 | 40m | -2 / - | OK2WDR | - / - | 2 | Partial capture |
| 10-08 14:52 | 40m | -6 / - | YB6ADS | - / - | 4 | Partial capture |
| 10-08 14:06 | 40m | -4 / +1 | RK1K | -18 / -1 | 5 | ✓ Full exchange observed |
| 10-08 14:05 | 40m | 0 / - | YG9DFK | - / - | 2 | Partial capture |
| 10-07 16:25 | 40m | -8 / - | EA6AM | - / -14 | 3 | ✓ Closing fragment |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 140700 -7 1671 RL8C UA3GDJ 73 140830 -11 1876 YD8VJI UA3GDJ KO92 (x4) 141300 +1 2510 RZ3DAB UA3GDJ KO92 (x2) 141415 -7 2510 UA3GDJ RZ3DAB +03 141430 -1 2510 RZ3DAB UA3GDJ R+02 141445 -8 2510 UA3GDJ RZ3DAB RR73 141500 -5 2510 RZ3DAB UA3GDJ 73 141730 -3 2511 UN2NC UA3GDJ R-19 (x2) 141830 -11 1862 YD8VJI UA3GDJ KO92 (x2)
UTC dB Audio Message 075530 +6 990 UA3GDJ PD2JAN +03 075545 +7 990 PD2JAN UA3GDJ R-12 (x2) 080130 +9 1919 DC1KN UA3GDJ 73 080215 +15 892 TA1MB UA3GDJ KO92 080230 +12 891 UA3GDJ TA1MB -06 080245 +16 892 TA1MB UA3GDJ R-11 (x2) 080330 +10 891 UA3GDJ TA1MB RR73 080345 +12 892 TA1MB UA3GDJ 73 080600 -4 2581 UA3GDJ LX1NT +00 080615 +12 2580 LX1NT UA3GDJ R-19 (x2) 080945 +9 1338 SP6FCQ UA3GDJ KO92 081015 +17 1620 TA7TC UA3GDJ KO92
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.
FT8DB and SO8OO WebSDR are a hobby project maintained solo. ☕ Buy me a coffee