I3JOA — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving I3JOA, decoded by SO8OO in southeastern Poland. 413 FT8 messages attributed to this token as transmitter, on 20m, 10m, across 19 UTC dates in the available aggregate history. Observed between 2026-06-08 and 2026-08-22.
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 413 FT8 messages attributed to I3JOA as the transmitting token by decoded message structure across 19 UTC dates in the available aggregate history. The largest monitored-band total was 10 m (91%), followed by 20 m (9%). Most decodes (71%) fell within the six-hour window 09:00-15:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -7.7 dB.
Overview
Bands
Last attributed message: 2026-08-22 11:31 UTC
Observed FT8 message patterns
- Attributed sample
- 413 messages
- Active dates
- 19 UTC dates
- Estimated median S/N
- -7.7 dB
- Estimated 10th-90th percentile
- -20 to +3 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 104, moderate (-15 to -9 dB) 91, strong (≥ -8 dB) 218.
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 I3JOA 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 I3JOA
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
- JN55 · 254 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 945 km (approx.)
- Last such locator decoded
- 2026-08-22 11:31 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 | I3JOA S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 09-14 20:55 | 40m | - / - | HB9BNV | +4 / - | 3 | Partial capture |
| 08-28 15:15 | 20m | - / -15 | RU3QR | -8 / - | 12 | Partial capture |
| 08-24 21:03 | 40m | - / 0 | DK7ZT | -3 / - | 2 | Partial capture |
| 08-22 11:29 | 10m | -10 / - | DL7UKT | - / -13 | 2 | ✓ Closing fragment |
| 08-22 11:28 | 10m | - / - | PE9JAN | -20 / - | 2 | Partial capture |
| 08-21 13:01 | 10m | - / - | DF7EE | +1 / - | 3 | Partial capture |
| 08-21 13:01 | 10m | - / - | DO9PV | -7 / - | 3 | Partial capture |
| 08-21 13:00 | 10m | - / - | DO2YJG | -10 / - | 2 | Partial capture |
| 08-21 12:56 | 10m | - / - | I1YTO | -8 / - | 2 | Partial capture |
| 08-21 12:56 | 10m | -19 / - | OZ1LGJ | - / -13 | 2 | ✓ Closing fragment |
| 08-21 12:55 | 10m | - / - | DL5GE | -15 / - | 4 | Partial capture |
| 08-21 12:53 | 10m | -17 / - | DO1FZL | - / -20 | 2 | ✓ Closing fragment |
| 08-21 12:53 | 10m | - / - | DN9DKN | -7 / - | 3 | Partial capture |
| 08-21 12:47 | 10m | -15 / - | HG5OEV | - / - | 4 | ✓ Closing fragment |
| 08-21 12:44 | 10m | - / - | PE9JAN | -17 / - | 2 | Partial capture |
| 08-21 12:43 | 10m | - / - | PA7ZZ | -9 / - | 4 | Partial capture |
| 08-21 12:37 | 10m | - / - | DO9PV | -10 / - | 2 | Partial capture |
| 08-20 16:44 | 20m | - / - | UA3VVA | -6 / - | 9 | Partial capture |
| 08-20 15:35 | 20m | - / - | PD3LKN | -12 / - | 3 | Partial capture |
| 08-20 15:27 | 20m | - / -15 | PA1PXL | -7 / - | 4 | ✓ Closing fragment |
| 08-20 13:50 | 10m | - / - | OZ3AAF | -8 / - | 2 | Partial capture |
| 08-20 13:45 | 10m | -22 / - | DL1AWS | - / -9 | 2 | ✓ Closing fragment |
| 08-18 11:52 | 10m | - / - | OZ1SMB | 0 / - | 3 | Partial capture |
| 08-18 11:48 | 10m | - / - | OZ1SMB | +4 / - | 2 | Partial capture |
| 08-10 21:06 | 20m | - / -19 | UA6YW | -4 / - | 2 | Partial capture |
| 08-10 20:59 | 20m | - / -18 | ON1AEY | -16 / - | 3 | ✓ Closing fragment |
| 08-10 20:10 | 40m | - / - | DL2AX | -14 / - | 2 | Partial capture |
| 08-07 11:52 | 10m | -16 / -3 | UR5VPR | -13 / -14 | 10 | ✓ Full exchange observed |
| 08-07 11:49 | 10m | -17 / - | E70SZ | - / 0 | 2 | ✓ Closing fragment |
| 08-07 11:49 | 10m | - / - | LZ4VR | -16 / - | 2 | Partial capture |
| 08-07 11:47 | 10m | -14 / - | HA7XL | - / +3 | 2 | ✓ Closing fragment |
| 08-07 11:46 | 10m | -14 / - | YO6PPX | - / -2 | 2 | ✓ Closing fragment |
| 08-07 11:44 | 10m | -14 / - | ER3RR | - / -14 | 2 | ✓ Closing fragment |
| 08-04 14:06 | 20m | - / -3 | DK8CX | -9 / - | 4 | ✓ Closing fragment |
| 08-04 13:56 | 20m | - / - | PD0PWH | -16 / - | 5 | Partial capture |
| 07-28 12:46 | 20m | - / - | DF6WE | -17 / - | 2 | Partial capture |
| 07-28 12:36 | 20m | - / -8 | F1PBZ | -1 / - | 2 | Partial capture |
| 07-26 08:53 | 20m | - / -22 | DL1HQN | -12 / - | 3 | Partial capture |
| 07-26 08:52 | 20m | - / - | RA6OY | +3 / - | 6 | Partial capture |
| 07-26 08:36 | 20m | - / - | DG5DR | -7 / - | 7 | Partial capture |
| 07-24 13:28 | 20m | - / - | DL5DQZ | -9 / - | 2 | Partial capture |
| 07-24 13:21 | 20m | - / - | PE9JAN | -10 / - | 3 | Partial capture |
| 07-24 13:16 | 10m | -21 / - | PD9FLX | - / +5 | 7 | Partial capture |
| 07-24 12:52 | 10m | - / - | RZ1AS | -4 / - | 3 | Partial capture |
| 07-24 12:40 | 10m | - / - | OZ5EEH | -9 / - | 7 | Partial capture |
| 07-23 13:12 | 20m | - / - | PD0IFI | +4 / - | 2 | Partial capture |
| 07-23 13:02 | 10m | - / - | F5ADE | -10 / - | 2 | ✓ Closing fragment |
| 07-23 13:00 | 10m | - / - | DK3TNA | -19 / - | 6 | Partial capture |
| 07-23 12:56 | 10m | - / - | DF5DY | -8 / - | 2 | Partial capture |
| 07-05 12:57 | 10m | -9 / - | YO4HQF | - / -16 | 3 | ✓ Closing fragment |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 201015 -15 1578 I3JOA DL2AX JO51 (x2) 210345 -6 1906 I3JOA DK7ZT +00 (x2) 205500 +6 2268 I3JOA HB9BNV JN47 (x3)
UTC dB Audio Message 164800 +3 1110 I3JOA UA3VVA LO06 (x2) 204445 +6 2773 I3JOA F1PBZ -20 151530 -6 920 I3JOA RU3QR -15 (x12)
UTC dB Audio Message 130130 -9 2154 I3JOA DO9PV JO30 130130 +2 1011 I3JOA DF7EE JO40 130200 -21 1575 I3JOA I1YTO R-21 130200 -7 2154 I3JOA DO9PV JO30 130200 +1 1011 I3JOA DF7EE JO40 130230 -5 2154 I3JOA DO9PV JO30 130230 -1 1011 I3JOA DF7EE JO40 170200 -19 1575 CQ I3JOA JN55 a1 112815 -19 1737 I3JOA PE9JAN JO22 112830 -14 1582 CQ I3JOA JN55 112845 -21 1737 I3JOA PE9JAN JO22 112900 -14 1583 CQ I3JOA JN55 112930 -12 1583 DL7UKT I3JOA -13 (x2) 113100 -11 1582 CQ I3JOA JN55
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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