UA3ZAB — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving UA3ZAB, decoded by SO8OO in southeastern Poland. 531 FT8 messages attributed to this token as transmitter, on 40m, 20m, 10m, across 47 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-10-17.
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 531 FT8 messages attributed to UA3ZAB as the transmitting token by decoded message structure across 47 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (90%), followed by 40 m (10%) and 10 m (0%). Several six-hour UTC windows tied for the largest share (73%), so no unique busiest interval is claimed. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -7.8 dB.
Overview
Bands
Last attributed message: 2026-10-17 04:27 UTC
Observed FT8 message patterns
- Attributed sample
- 531 messages
- Active dates
- 47 UTC dates
- Estimated median S/N
- -7.8 dB
- Estimated 10th-90th percentile
- -17 to +5 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 83, moderate (-15 to -9 dB) 160, strong (≥ -8 dB) 288.
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 UA3ZAB 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 UA3ZAB
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
- KO80 · 357 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 1,082 km (approx.)
- Last such locator decoded
- 2026-10-17 04:25 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 | UA3ZAB S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 10-17 04:28 | 40m | - / - | RK6MC | -7 / - | 2 | Partial capture |
| 10-17 04:25 | 40m | 0 / - | UA9SY | - / -1 | 4 | ✓ Closing fragment |
| 10-16 03:29 | 40m | -17 / - | CT7AUT | -9 / - | 2 | ✓ Closing observed |
| 10-15 04:15 | 40m | +2 / - | HB0CC | - / - | 2 | Partial capture |
| 10-15 04:12 | 40m | -13 / - | Z33ST | - / - | 2 | Partial capture |
| 10-15 04:08 | 40m | +1 / - | ES2AJ | - / +2 | 3 | ✓ Closing fragment |
| 10-15 04:02 | 40m | - / - | EW4DX | -11 / - | 2 | Partial capture |
| 10-15 04:00 | 40m | - / -3 | R7DX | +20 / - | 4 | ✓ Closing fragment |
| 10-15 03:57 | 40m | - / - | DF4WQ | -3 / - | 5 | Partial capture |
| 10-14 03:42 | 40m | - / -16 | PQ5TA | -6 / - | 2 | ✓ Closing fragment |
| 10-13 04:08 | 40m | - / - | SV5AZK | -20 / - | 2 | Partial capture |
| 10-13 03:41 | 40m | - / - | SV5BYP | -6 / - | 5 | Partial capture |
| 10-11 04:25 | 40m | - / - | UC6D | -3 / - | 3 | Partial capture |
| 10-11 04:16 | 40m | - / -15 | IU5AWQ | -14 / - | 4 | ✓ Closing fragment |
| 10-11 04:05 | 40m | - / - | RT6DU | -5 / - | 3 | Partial capture |
| 10-11 04:03 | 40m | - / - | RD3FY | -7 / - | 7 | Partial capture |
| 10-11 04:00 | 40m | - / -8 | RU4I | -13 / - | 2 | ✓ Closing fragment |
| 10-11 03:59 | 40m | - / -1 | SV5BYP | -9 / - | 9 | Partial capture |
| 10-10 04:16 | 40m | -3 / - | GJ0KYZ | - / - | 3 | Partial capture |
| 10-10 04:12 | 40m | -5 / -15 | GJ0KYZ | -4 / - | 5 | Partial capture |
| 10-10 04:10 | 40m | -5 / - | CT3MD | -10 / -17 | 3 | ✓ Closing observed |
| 10-10 04:01 | 40m | -5 / - | CT3MD | - / - | 3 | Partial capture |
| 10-10 03:53 | 40m | - / -7 | J48S | -14 / - | 2 | ✓ Closing fragment |
| 10-10 03:49 | 40m | - / -22 | IU8RFW | -9 / - | 5 | Partial capture |
| 10-08 04:24 | 40m | -12 / -12 | EA5HEU | -8 / -17 | 4 | ✓ Full exchange observed |
| 10-08 04:17 | 40m | -11 / - | C5R | - / - | 13 | ✓ Closing fragment |
| 10-08 04:12 | 40m | -4 / - | TT1GD | - / -17 | 3 | ✓ Closing fragment |
| 10-08 04:11 | 40m | 0 / - | PY5CC | -9 / -12 | 2 | ✓ Closing observed |
| 10-08 04:08 | 40m | - / - | UB3DQR | -8 / - | 2 | Partial capture |
| 10-07 16:46 | 40m | -16 / - | 9A1CCB | - / - | 3 | Partial capture |
| 10-07 16:43 | 40m | -14 / -7 | RU4SO | -12 / - | 3 | ✓ Closing observed |
| 08-28 04:16 | 20m | +9 / - | K9UWA | - / - | 2 | Partial capture |
| 08-28 04:13 | 20m | +3 / -13 | 7Q7CT | -16 / - | 4 | ✓ Closing observed |
| 08-28 04:01 | 20m | +11 / - | VK2PV | - / - | 4 | Partial capture |
| 08-28 03:57 | 20m | +9 / - | F4BYA | -2 / -11 | 5 | ✓ Closing observed |
| 08-28 03:57 | 20m | - / - | RM4HX | -5 / - | 2 | Partial capture |
| 08-28 03:50 | 20m | +12 / - | XE2V/QRP | - / -7 | 3 | Partial capture |
| 08-28 03:45 | 20m | - / - | R4FDK | -14 / - | 2 | Partial capture |
| 08-28 03:40 | 20m | - / -1 | 5Z4VJ | -12 / - | 5 | ✓ Closing fragment |
| 08-28 03:38 | 20m | +1 / - | UB0AKC | - / - | 2 | Partial capture |
| 08-28 03:30 | 20m | -8 / - | W0OVX | - / -15 | 2 | ✓ Closing fragment |
| 08-27 04:01 | 20m | - / -10 | N9NJY | -1 / - | 2 | ✓ Closing fragment |
| 08-27 03:53 | 20m | - / -3 | K4HWS | -12 / - | 2 | ✓ Closing fragment |
| 08-26 15:28 | 20m | - / +4 | RI1FJL | -11 / - | 3 | ✓ Closing fragment |
| 08-26 04:15 | 20m | - / - | KF4YUS | -20 / - | 2 | Partial capture |
| 08-26 04:12 | 20m | - / -12 | WD0BGZ | -24 / - | 2 | ✓ Closing fragment |
| 08-25 04:18 | 20m | +4 / - | CO8CF | - / - | 3 | Partial capture |
| 08-25 04:12 | 20m | -2 / - | CO8CF | - / - | 2 | Partial capture |
| 08-25 04:11 | 20m | -4 / - | R8LCP | - / -1 | 2 | ✓ Closing fragment |
| 08-25 04:09 | 20m | -5 / - | R0AKA | - / - | 3 | Partial capture |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 040915 +1 647 ES2AJ UA3ZAB R+02 (x2) 041215 -11 647 Z33ST UA3ZAB KO80 (x2) 041500 +2 647 HB0CC UA3ZAB KO80 (x2) 032930 -17 838 CT7AUT UA3ZAB KO80 033015 -9 1466 UA3ZAB CT7AUT RR73 033315 -11 1489 UA3ZAB YO8RSL RR73 042530 +0 762 UA9SY UA3ZAB KO80 (x4) 042845 -2 1835 UA3ZAB RK6MC KN97 (x2)
UTC dB Audio Message 035815 -3 2715 UA3ZAB F4BYA JN19 (x2) 035900 +8 712 F4BYA UA3ZAB 73 040000 +8 712 N0IDX UA3ZAB KO80 040100 +9 712 VK2PV UA3ZAB KO80 (x4) 041345 +7 1121 7Q7CT UA3ZAB KO80 041430 -14 1121 UA3ZAB 7Q7CT -13 (x2) 041515 -1 1120 7Q7CT UA3ZAB 73 041630 +7 551 K9UWA UA3ZAB KO80 (x2) 043930 -7 629 ZL2BH UA3ZAB KO80
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