IU1DOF — reception at SO8OO
Signals decoded by SO8OO in southeastern Poland. FT8 and CW have separate histories; all times are UTC.
FT8 activity
Receiver-side FT8 activity involving IU1DOF, decoded by SO8OO in southeastern Poland. 700 FT8 messages attributed to this token as transmitter, on 80m, 60m, 40m, 20m, 10m, across 36 UTC dates in the available aggregate history. Observed between 2026-06-09 and 2026-10-31.
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 700 FT8 messages attributed to IU1DOF as the transmitting token by decoded message structure across 36 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (49%), followed by 20 m (22%) and 60 m (19%). Most decodes (88%) fell within the six-hour window 15:00-21:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (63%); the estimated median was -4 dB.
Overview
Bands
Last attributed message: 2026-10-31 20:32 UTC
Observed FT8 message patterns
- Attributed sample
- 700 messages
- Active dates
- 36 UTC dates
- Estimated median S/N
- -4 dB
- Estimated 10th-90th percentile
- -17 to +6 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 100, moderate (-15 to -9 dB) 157, strong (≥ -8 dB) 443.
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 IU1DOF 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 IU1DOF
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
- JN34 · 465 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 1,267 km (approx.)
- Last such locator decoded
- 2026-10-31 20:32 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 | IU1DOF S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 10-31 20:29 | 60m | +1 / - | <...> | - / - | 7 | Partial capture |
| 10-31 20:28 | 60m | +6 / - | SP9NLK | - / +5 | 2 | ✓ Closing fragment |
| 10-31 20:13 | 60m | +2 / - | 6W/IK2HKT | - / - | 28 | Partial capture |
| 10-31 20:05 | 60m | -1 / - | S9R | - / -16 | 15 | ✓ Closing fragment |
| 10-31 17:55 | 60m | - / - | IK5ZPV | -4 / - | 3 | Partial capture |
| 10-31 17:54 | 60m | -15 / -5 | SM0EJR | -18 / -2 | 5 | ✓ Full exchange observed |
| 10-31 17:52 | 60m | -13 / -11 | HA0NDN | -6 / -2 | 5 | ✓ Full exchange observed |
| 10-31 15:47 | 40m | 0 / - | EX8ABR | - / - | 2 | Partial capture |
| 10-31 15:44 | 40m | -6 / - | JA1VSL | - / -18 | 3 | Partial capture |
| 10-30 17:54 | 40m | +1 / -2 | 4O4DB | -10 / -25 | 8 | ✓ Full exchange observed |
| 10-30 17:49 | 40m | -1 / - | UB0AMB | - / - | 2 | Partial capture |
| 10-30 17:46 | 40m | +1 / - | JY4CI | - / - | 3 | Partial capture |
| 10-30 17:44 | 40m | +1 / - | RZ0SW | - / -15 | 4 | ✓ Closing fragment |
| 10-24 17:17 | 40m | -6 / - | IK7YZB | - / -1 | 2 | ✓ Closing fragment |
| 10-24 17:14 | 40m | - / -2 | PC2J | -7 / - | 3 | ✓ Closing fragment |
| 10-24 17:12 | 40m | -19 / - | RA9CUU | - / -4 | 2 | ✓ Closing fragment |
| 10-22 16:58 | 40m | -3 / - | JY5IB | - / -14 | 5 | Partial capture |
| 10-22 16:54 | 40m | -7 / - | BG2EFX | - / -25 | 2 | Partial capture |
| 10-22 16:51 | 40m | -4 / -4 | OH3OJ | +10 / 0 | 4 | ✓ Full exchange observed |
| 10-22 16:51 | 40m | -2 / +5 | PE9JAN | -2 / +7 | 7 | ✓ Full exchange observed |
| 10-22 16:50 | 40m | -3 / - | RZ4FWA | - / -10 | 3 | ✓ Closing fragment |
| 10-22 16:48 | 40m | 0 / - | EA4IBN | - / -13 | 2 | ✓ Closing fragment |
| 10-22 16:47 | 40m | -3 / - | PB0ACM | - / -1 | 2 | ✓ Closing fragment |
| 10-22 16:44 | 40m | -4 / -1 | PE1NPS | -3 / -8 | 7 | ✓ Full exchange observed |
| 10-22 16:44 | 40m | -2 / - | BG3GP | - / -12 | 2 | ✓ Closing fragment |
| 10-22 16:43 | 40m | -1 / - | JO4IPQ | - / - | 3 | Partial capture |
| 10-22 16:41 | 40m | 0 / - | BA7SAY | - / -4 | 4 | ✓ Closing fragment |
| 10-22 16:39 | 40m | -2 / -13 | EK1KE | -19 / -7 | 4 | Partial capture |
| 10-22 16:38 | 40m | 0 / - | R8CGT | - / -18 | 2 | ✓ Closing fragment |
| 10-22 16:36 | 40m | -2 / - | R9CA | - / - | 2 | Partial capture |
| 10-22 16:34 | 40m | +1 / - | BA7NLL | - / - | 3 | Partial capture |
| 10-21 16:58 | 40m | -13 / - | RV9UNK | - / -12 | 3 | ✓ Closing fragment |
| 10-21 16:55 | 40m | -8 / - | R8OAE | - / -13 | 3 | ✓ Closing fragment |
| 10-21 16:53 | 40m | -7 / - | BG4UVR | - / - | 4 | Partial capture |
| 10-15 18:53 | 40m | -2 / - | PA3AGN | - / +8 | 2 | ✓ Closing fragment |
| 10-15 18:52 | 40m | -3 / -10 | EP2AES | -14 / -14 | 8 | Partial capture |
| 10-15 18:51 | 40m | -3 / - | TF8KW | - / -14 | 3 | ✓ Closing fragment |
| 10-15 18:48 | 40m | -2 / - | ZL4KX | - / - | 2 | Partial capture |
| 10-15 18:47 | 40m | 0 / - | VJ6X | - / - | 2 | Partial capture |
| 10-14 17:53 | 40m | 0 / - | A61DD | - / - | 2 | Partial capture |
| 10-14 17:52 | 40m | -3 / - | UN0GY | - / - | 2 | Partial capture |
| 10-14 17:50 | 40m | -4 / - | R8ACF | - / -18 | 2 | Partial capture |
| 10-14 17:48 | 40m | -5 / - | LB7UK | - / - | 3 | Partial capture |
| 10-14 17:45 | 40m | 0 / - | JA0LFV | - / -24 | 4 | ✓ Closing fragment |
| 10-14 17:43 | 40m | -1 / -6 | EA3FP | -15 / +3 | 4 | ✓ Full exchange observed |
| 10-14 17:41 | 40m | -3 / +4 | DD3ZZ | -3 / +2 | 6 | ✓ Full exchange observed |
| 10-14 17:39 | 40m | -3 / -3 | PD2MAC | -10 / -12 | 5 | ✓ Full exchange observed |
| 10-14 17:36 | 40m | -6 / - | VK6TDF/P | - / -3 | 2 | Partial capture |
| 10-04 05:28 | 40m | -9 / - | WA2HIP | - / - | 3 | Partial capture |
| 10-04 05:24 | 40m | - / -15 | UT5MB | -1 / - | 2 | Partial capture |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 202445 +2 897 6W/IK2HKT IU1DOF JN34 (x6) 202815 +8 898 SP9NLK IU1DOF R+05 (x2) 202915 -4 2322 <...> IU1DOF JN34 (x7)
UTC dB Audio Message 174945 +0 890 UB0AMB IU1DOF JN34 (x2) 175400 +1 890 4O4DB IU1DOF JN34 (x2) 175445 -10 890 IU1DOF 4O4DB -02 175500 -6 890 4O4DB IU1DOF R-25 175515 -12 890 IU1DOF 4O4DB RR73 175530 +9 890 4O4DB IU1DOF R-25 175545 -9 890 IU1DOF 4O4DB RR73 175600 +2 890 4O4DB IU1DOF 73 154415 -9 2427 JA1VSL IU1DOF JN34 (x3) 154715 -2 2414 EX8ABR IU1DOF JN34 (x2)
UTC dB Audio Message 193330 -15 1614 RC9WC IU1DOF JN34 (x6) 193630 -20 1614 EA1KCN IU1DOF -11 (x2) 193730 -15 1614 UA4FKT IU1DOF -15 193745 +4 1614 IU1DOF UA4FKT R-22 193800 -14 1614 UA4FKT IU1DOF RR73 193830 -8 1614 RA4Y IU1DOF -17 193945 -8 1614 IU1WDK IU1DOF -09 193230 +2 621 C31CT IU1DOF JN34 (x2)
UTC dB Audio Message 195400 +3 2313 AD9GE IU1DOF JN34 (x2) 195530 +4 2313 OZ7CL IU1DOF R+14 (x2) 195630 +5 2313 CQ JA IU1DOF JN34 195645 +14 2313 IU1DOF RN6MA -06 195700 +7 2313 CQ JA IU1DOF JN34 195715 +12 2313 IU1DOF RN6MA -06 (x2) 195800 +7 2313 JA0JWQ IU1DOF 73 195830 +6 2313 CQ JA IU1DOF JN34 (x5)
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.
CW
No CW receptions recorded for this callsign in the last 30 days.
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