RA3ZOM — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving RA3ZOM, decoded by SO8OO in southeastern Poland. 6,016 FT8 messages attributed to this token as transmitter, on 80m, 60m, 40m, 20m, 10m, across 73 UTC dates in the available aggregate history. Observed between 2026-06-10 and 2026-10-04.
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 6,016 FT8 messages attributed to RA3ZOM as the transmitting token by decoded message structure across 73 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (65%), followed by 80 m (26%) and 10 m (5%). Most decodes (87%) fell within the six-hour window 15:00-21:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -7.1 dB.
Overview
Bands
Last attributed message: 2026-10-04 17:50 UTC
Observed FT8 message patterns
- Attributed sample
- 6,016 messages
- Active dates
- 73 UTC dates
- Estimated median S/N
- -7.1 dB
- Estimated 10th-90th percentile
- -17 to +7 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 828, moderate (-15 to -9 dB) 1,885, strong (≥ -8 dB) 3,303.
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 RA3ZOM 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 RA3ZOM
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
- KO90 · 3,334 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 1,223 km (approx.)
- Last such locator decoded
- 2026-10-04 17:50 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 | RA3ZOM S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 10-04 17:30 | 80m | +7 / - | RU3FM | - / -8 | 2 | ✓ Closing fragment |
| 10-04 16:44 | 80m | - / - | F1OBJ | +5 / - | 19 | Partial capture |
| 10-04 16:40 | 80m | - / - | DA6NEL | +5 / - | 7 | Partial capture |
| 10-04 16:40 | 80m | - / -10 | RA9UJ | -8 / - | 2 | Partial capture |
| 10-04 16:38 | 80m | - / - | RO3ZR | +4 / - | 2 | Partial capture |
| 10-04 16:36 | 80m | - / - | F1OBJ | +5 / - | 6 | Partial capture |
| 10-04 16:33 | 80m | - / - | 9A6OY | +5 / - | 7 | Partial capture |
| 10-04 16:32 | 80m | +5 / -4 | HA3TBL | +3 / -15 | 10 | ✓ Full exchange observed |
| 10-04 16:32 | 80m | - / - | SP5DFK/QRP | 0 / - | 2 | Partial capture |
| 10-02 19:27 | 80m | - / - | RA3FH | 0 / - | 2 | Partial capture |
| 10-02 19:27 | 80m | +2 / - | RU3KA | - / - | 2 | Partial capture |
| 10-02 19:08 | 80m | - / - | R2AL | +2 / - | 3 | ✓ Closing fragment |
| 10-02 19:05 | 80m | +2 / - | RK3YWS/P | - / -10 | 3 | Partial capture |
| 10-02 19:01 | 80m | - / +2 | R6NA | -13 / - | 3 | ✓ Closing fragment |
| 10-01 18:30 | 80m | +2 / -6 | YT2ZE | -4 / - | 4 | ✓ Closing observed |
| 10-01 18:13 | 80m | -4 / -4 | RA3ICA | -1 / -5 | 5 | ✓ Full exchange observed |
| 10-01 17:56 | 80m | - / +6 | RW3VX | -7 / - | 3 | ✓ Closing fragment |
| 10-01 17:54 | 80m | - / 0 | R4HMI | -7 / - | 3 | ✓ Closing fragment |
| 10-01 17:50 | 80m | +2 / 0 | RT3K | -12 / +10 | 4 | ✓ Full exchange observed |
| 10-01 17:50 | 80m | - / - | DL8WEM | +11 / - | 3 | Partial capture |
| 10-01 17:37 | 40m | -4 / +2 | DG3DAF | +1 / -10 | 5 | ✓ Full exchange observed |
| 10-01 17:27 | 40m | +1 / - | R1CDY | - / -5 | 12 | Partial capture |
| 10-01 17:27 | 40m | - / -9 | LX1RFJ | -6 / - | 3 | Partial capture |
| 10-01 17:23 | 40m | - / - | UB2FEK | -10 / - | 2 | Partial capture |
| 10-01 17:20 | 40m | -5 / +3 | DL9PZ | -8 / -13 | 10 | Partial capture |
| 10-01 17:19 | 40m | -7 / +1 | SP3GHC | -9 / -14 | 5 | ✓ Full exchange observed |
| 10-01 17:07 | 40m | +1 / - | UN0LK | - / -11 | 3 | ✓ Closing fragment |
| 10-01 17:05 | 40m | - / - | DK8HC | -7 / - | 3 | Partial capture |
| 10-01 17:02 | 40m | +2 / - | R6FGF | - / -14 | 4 | ✓ Closing fragment |
| 10-01 16:58 | 40m | +5 / - | R4GD | - / -8 | 2 | ✓ Closing fragment |
| 10-01 16:47 | 80m | - / - | DL6UM | +4 / - | 2 | Partial capture |
| 10-01 16:40 | 80m | - / - | R1CDY | -9 / - | 2 | Partial capture |
| 10-01 16:36 | 80m | -4 / - | RK6MC | -19 / -1 | 3 | ✓ Closing observed |
| 10-01 16:30 | 80m | -2 / - | UB3PAQ | - / +3 | 3 | Partial capture |
| 10-01 16:27 | 80m | 0 / - | R3UAF | - / +8 | 2 | ✓ Closing fragment |
| 10-01 16:25 | 80m | -4 / -10 | R8CEG | -24 / -14 | 4 | ✓ Full exchange observed |
| 10-01 16:24 | 80m | -1 / -2 | RD7LC | -3 / - | 3 | ✓ Closing observed |
| 10-01 16:18 | 80m | +1 / +3 | RA3YDA | -12 / -9 | 14 | ✓ Full exchange observed |
| 10-01 16:18 | 80m | +2 / -17 | UA6HJT | -10 / -11 | 6 | ✓ Full exchange observed |
| 10-01 16:16 | 80m | +1 / - | UB3KGW | -24 / -1 | 4 | ✓ Closing observed |
| 10-01 16:11 | 80m | +3 / +3 | RK6C | 0 / - | 8 | ✓ Full exchange observed |
| 09-30 18:24 | 80m | 0 / +2 | UB6HQQ | -18 / +1 | 4 | ✓ Full exchange observed |
| 09-30 18:21 | 80m | -2 / - | R6FX | -16 / -14 | 3 | ✓ Closing observed |
| 09-30 18:18 | 80m | -2 / +3 | RU3QR | -13 / +5 | 5 | ✓ Full exchange observed |
| 09-30 18:08 | 80m | - / - | DL9KM | -21 / - | 5 | Partial capture |
| 09-30 17:59 | 80m | - / - | DO1MDO | -4 / - | 2 | Partial capture |
| 09-30 17:56 | 80m | +2 / -1 | EU1FQ | +12 / -3 | 5 | ✓ Full exchange observed |
| 09-30 17:50 | 80m | +4 / - | LZ3SD | -1 / -12 | 3 | ✓ Closing observed |
| 09-30 17:45 | 80m | - / - | DO4PZB | +4 / - | 3 | Partial capture |
| 09-30 17:41 | 80m | 0 / +3 | RU4SS | -10 / +6 | 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 165300 +8 1013 RA3ZOM F1OBJ JN38 (x2) 172930 +10 1014 CQ RA3ZOM KO90 173015 -19 1077 RA3ZOM RC7LX -05 173030 +10 1013 RU3FM RA3ZOM -08 (x2) 173130 +5 1013 CQ RA3ZOM KO90 (x9)
UTC dB Audio Message 173245 -2 1063 R1CDY RA3ZOM -05 173615 -9 1062 CQ RA3ZOM KO90 (x3) 173730 +4 1060 RA3ZOM DG3DAF JO41 173745 -5 1063 DG3DAF RA3ZOM -10 173800 +1 1061 RA3ZOM DG3DAF R+02 173815 -3 1063 DG3DAF RA3ZOM RR73 173830 -1 1060 RA3ZOM DG3DAF 73 173900 -1 1061 RA3ZOM RA3LBW KO64 173945 -3 1062 CQ RA3ZOM KO90 (x4) 174130 -16 1062 RA3ZOM IN3IZQ JN56
UTC dB Audio Message 172145 -21 1576 RA3ZOM 9K2OK -18 (x2) 124315 -21 1333 RA3ZOM RW9WJ R-19 (x2)
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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