IW4BO — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving IW4BO, decoded by SO8OO in southeastern Poland. 1,069 FT8 messages attributed to this token as transmitter, on 40m, 20m, across 5 UTC dates in the available aggregate history. Observed between 2026-08-05 and 2026-08-10.
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 1,069 FT8 messages attributed to IW4BO as the transmitting token by decoded message structure across 5 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (100%), followed by 40 m (0%). Most decodes (58%) 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 -13.9 dB.
Overview
Bands
Last attributed message: 2026-08-10 06:47 UTC
Observed FT8 message patterns
- Attributed sample
- 1,069 messages
- Active dates
- 5 UTC dates
- Estimated median S/N
- -13.9 dB
- Estimated 10th-90th percentile
- -20 to -5 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 393, moderate (-15 to -9 dB) 457, strong (≥ -8 dB) 219.
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 IW4BO 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 IW4BO
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
- JN54 · 833 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 1,013 km (approx.)
- Last such locator decoded
- 2026-08-10 06:46 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 | IW4BO S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 08-10 06:51 | 20m | - / - | DF6NL | -4 / - | 7 | Partial capture |
| 08-10 06:43 | 20m | -16 / -16 | DK3TNA | -10 / -7 | 13 | ✓ Full exchange observed |
| 08-10 06:21 | 20m | -9 / -2 | UT0CK | +1 / -8 | 12 | ✓ Full exchange observed |
| 08-10 06:18 | 20m | -6 / - | SQ8V | - / - | 2 | ✓ Closing fragment |
| 08-10 06:14 | 20m | - / -5 | DL1VVQ | -13 / - | 2 | Partial capture |
| 08-10 06:01 | 20m | -17 / - | RV3YN | -12 / -13 | 5 | Partial capture |
| 08-10 05:57 | 20m | -15 / - | UA1AQC | - / - | 2 | ✓ Closing fragment |
| 08-10 05:54 | 20m | -20 / - | DG1RMY | -16 / -9 | 3 | Partial capture |
| 08-10 05:53 | 20m | -16 / - | RA3DAD | -16 / -4 | 3 | ✓ Closing observed |
| 08-10 05:47 | 20m | -20 / -10 | DL4JG | -21 / - | 4 | ✓ Closing observed |
| 08-10 05:45 | 20m | -16 / - | RD3FY | - / - | 2 | ✓ Closing fragment |
| 08-10 05:39 | 20m | -10 / - | UA3GDJ | -7 / -2 | 3 | ✓ Closing observed |
| 08-10 05:30 | 20m | -11 / - | RX9ABI | -10 / - | 2 | ✓ Closing observed |
| 08-09 21:41 | 20m | -13 / -15 | YO4ASD | -10 / -12 | 3 | ✓ Full exchange observed |
| 08-09 21:25 | 20m | -20 / - | HG8LXL | - / -8 | 2 | ✓ Closing fragment |
| 08-09 19:26 | 20m | - / -16 | G0RVY | -1 / - | 2 | ✓ Closing fragment |
| 08-09 19:10 | 20m | - / - | F4JJS/P | -16 / - | 2 | Partial capture |
| 08-09 19:08 | 20m | - / +4 | F5MXH | -22 / - | 3 | Partial capture |
| 08-07 07:42 | 20m | -18 / - | GW4RDW | -4 / +7 | 2 | Partial capture |
| 08-07 07:04 | 20m | - / - | G4DBW | -9 / - | 2 | ✓ Closing fragment |
| 08-07 06:03 | 20m | -6 / - | HF5A | - / +4 | 2 | Partial capture |
| 08-07 05:31 | 20m | 0 / - | YT3MD | - / -5 | 4 | ✓ Closing fragment |
| 08-07 05:22 | 20m | -1 / - | PD9FLX | - / -2 | 3 | ✓ Closing fragment |
| 08-07 05:17 | 20m | -1 / - | PD9FLX | - / 0 | 3 | Partial capture |
| 08-07 05:06 | 20m | -19 / - | XE1PM | - / -7 | 5 | ✓ Closing fragment |
| 08-07 05:01 | 20m | -9 / - | 5Z4VJ | - / 0 | 3 | ✓ Closing fragment |
| 08-07 04:58 | 20m | -10 / -17 | IZ8VYU | -12 / -12 | 4 | ✓ Full exchange observed |
| 08-07 04:26 | 20m | -17 / -19 | IQ4JO | -20 / -19 | 7 | ✓ Full exchange observed |
| 08-07 04:19 | 20m | -20 / - | R7MP | - / -2 | 2 | ✓ Closing fragment |
| 08-07 03:56 | 20m | -18 / - | 9K2OK | - / -12 | 3 | ✓ Closing fragment |
| 08-07 03:51 | 20m | -18 / - | YO6PPX | - / +5 | 2 | ✓ Closing fragment |
| 08-07 03:12 | 20m | -13 / - | K0BLT | - / -3 | 2 | Partial capture |
| 08-07 02:47 | 20m | -11 / - | KE0CGB | - / -21 | 2 | Partial capture |
| 08-07 02:42 | 20m | -7 / - | KA4FFK | - / -8 | 3 | ✓ Closing fragment |
| 08-07 02:20 | 20m | -20 / - | NR5O | - / -15 | 3 | Partial capture |
| 08-07 02:09 | 20m | -2 / - | W5ART | - / -17 | 2 | Partial capture |
| 08-07 01:54 | 20m | -15 / - | R8LCA | - / -18 | 2 | Partial capture |
| 08-07 01:42 | 20m | -14 / - | N8FMD | - / -6 | 3 | Partial capture |
| 08-07 01:31 | 20m | -7 / - | KM6LBW | - / - | 3 | ✓ Closing fragment |
| 08-07 01:22 | 20m | -12 / - | TA2ETI | - / -20 | 5 | ✓ Closing fragment |
| 08-07 01:19 | 20m | -16 / - | VU2JXL | - / -23 | 2 | Partial capture |
| 08-07 01:18 | 20m | -17 / - | N8FMD | - / -8 | 2 | Partial capture |
| 08-07 01:15 | 20m | -18 / - | DK5UP | - / -18 | 2 | Partial capture |
| 08-07 01:13 | 20m | -16 / - | M7RNK | - / - | 2 | ✓ Closing fragment |
| 08-07 01:04 | 20m | -17 / - | YO8RSL | - / -15 | 3 | ✓ Closing fragment |
| 08-07 00:56 | 20m | -8 / -7 | 9A2TN | -11 / - | 3 | ✓ Closing observed |
| 08-07 00:51 | 20m | -12 / - | N8FTJ | - / -6 | 3 | ✓ Closing fragment |
| 08-07 00:30 | 20m | -8 / - | N3WYG | - / -11 | 4 | ✓ Closing fragment |
| 08-07 00:19 | 20m | -8 / - | HI8AYR | - / - | 2 | ✓ Closing fragment |
| 08-07 00:13 | 20m | -13 / -20 | WZ8S | -14 / - | 3 | ✓ Closing observed |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 064700 -14 1378 IW4BO DK3TNA JO62 064715 -18 1378 DK3TNA IW4BO -07 064730 -12 1378 IW4BO DK3TNA R-16 064745 -15 1378 DK3TNA IW4BO -07 064800 -9 1377 IW4BO DK3TNA R-16 (x4) 065100 -6 1208 IW4BO DF6NL JN59 (x7)
UTC dB Audio Message 204615 -20 1434 CQ IW4BO JN54
UTC dB Audio Message 134630 -12 2542 IW4BO PD9FLX JO22 (x4) 135630 -2 2542 IW4BO OZ0A JO55 (x3) 141600 -20 1587 IW4BO F5ADE JN07 (x3) 145730 -10 971 IW4BO M8FQT IO93 (x4) 161430 -19 1490 IW4BO M0BEW +06
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