IZ4DYU — 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 IZ4DYU, decoded by SO8OO in southeastern Poland. 422 FT8 messages attributed to this token as transmitter, on 160m, 80m, 40m, across 30 UTC dates in the available aggregate history. Observed between 2026-09-06 and 2026-11-06.
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 422 FT8 messages attributed to IZ4DYU as the transmitting token by decoded message structure across 30 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (53%), followed by 80 m (36%) and 160 m (11%). Most decodes (63%) fell within the six-hour window 16:00-22:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (71%); the estimated median was -5 dB.
Overview
Bands
Last attributed message: 2026-11-06 05:45 UTC
Observed FT8 message patterns
- Attributed sample
- 422 messages
- Active dates
- 30 UTC dates
- Estimated median S/N
- -5 dB
- Estimated 10th-90th percentile
- -14 to +5 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 31, moderate (-15 to -9 dB) 91, strong (≥ -8 dB) 300.
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 IZ4DYU 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 IZ4DYU
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 · 255 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 1,013 km (approx.)
- Last such locator decoded
- 2026-11-06 05:44 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 | IZ4DYU S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 11-06 05:44 | 40m | +4 / - | DL/N0PNG | - / -13 | 2 | Partial capture |
| 11-05 07:11 | 40m | -6 / - | ES6DO | - / - | 3 | Partial capture |
| 11-02 21:28 | 160m | -14 / - | RA0AF | - / - | 2 | Partial capture |
| 11-02 21:21 | 160m | -19 / - | UN0GY | - / - | 3 | Partial capture |
| 10-31 22:27 | 80m | 0 / - | EA1IOK | - / -10 | 5 | ✓ Closing fragment |
| 10-31 22:24 | 80m | +2 / - | SP5JMA | +2 / -5 | 5 | ✓ Closing observed |
| 10-31 22:22 | 80m | -2 / -12 | PE1NPS | -5 / -17 | 7 | ✓ Full exchange observed |
| 10-31 22:20 | 80m | -2 / - | DO5PY | +2 / +4 | 6 | ✓ Closing observed |
| 10-31 22:20 | 80m | -8 / -4 | DL4NWM | +8 / +2 | 7 | ✓ Full exchange observed |
| 10-31 22:18 | 80m | 0 / - | S50XX | +6 / +2 | 3 | ✓ Closing observed |
| 10-31 22:10 | 80m | 0 / -6 | IS0JHQ | +6 / +3 | 4 | ✓ Full exchange observed |
| 10-31 22:09 | 80m | -3 / -5 | ON3UA | -6 / -7 | 2 | Partial capture |
| 10-27 21:35 | 160m | -18 / -21 | YO3FRI | +1 / - | 5 | Partial capture |
| 10-27 21:20 | 160m | -20 / -18 | EA8BS | -21 / -25 | 6 | ✓ Full exchange observed |
| 10-27 21:14 | 160m | -20 / - | YO3FRI | - / - | 2 | Partial capture |
| 10-27 06:57 | 80m | -17 / - | UT/WE9G | - / +8 | 3 | Partial capture |
| 10-26 19:42 | 80m | +3 / - | DK1HSI | -9 / -6 | 6 | ✓ Full exchange observed |
| 10-26 19:38 | 80m | -2 / -19 | OD5ZZ | -18 / -13 | 13 | ✓ Full exchange observed |
| 10-22 20:26 | 160m | -17 / - | EX7DY | - / - | 5 | Partial capture |
| 10-22 20:19 | 80m | -2 / - | SV9MBH | - / - | 2 | Partial capture |
| 10-22 20:15 | 80m | -1 / - | TA4SSK | -24 / -20 | 3 | ✓ Closing observed |
| 10-22 20:11 | 80m | 0 / - | SV9MBH | - / - | 3 | Partial capture |
| 10-22 20:10 | 80m | +1 / - | TA4SSK | - / - | 2 | Partial capture |
| 10-22 06:43 | 40m | +1 / - | C31MF | - / - | 6 | Partial capture |
| 10-22 06:17 | 40m | -4 / - | UR9QQ | -22 / -25 | 3 | Partial capture |
| 10-22 06:14 | 40m | -6 / - | OA4ENG | - / -19 | 5 | Partial capture |
| 10-21 16:31 | 80m | -7 / -1 | DK5OPA | -15 / -9 | 3 | ✓ Full exchange observed |
| 10-21 16:30 | 80m | -6 / -17 | R7DX | -3 / +2 | 8 | ✓ Full exchange observed |
| 10-21 16:28 | 80m | -9 / -15 | RK6OQ | -7 / -9 | 5 | ✓ Full exchange observed |
| 10-21 16:22 | 80m | -9 / - | OD5ZZ | - / -18 | 10 | Partial capture |
| 10-21 16:14 | 80m | -7 / - | OD5ZZ | - / - | 5 | Partial capture |
| 10-15 05:52 | 40m | +2 / - | C5R | - / -11 | 6 | Partial capture |
| 10-15 05:47 | 40m | -2 / - | EA8BS | - / - | 3 | Partial capture |
| 10-12 21:18 | 40m | -8 / - | U1BD | - / -8 | 3 | Partial capture |
| 10-12 21:12 | 40m | -4 / - | DA125RH | - / - | 8 | Partial capture |
| 10-12 21:07 | 40m | -11 / - | D2ACE | - / -1 | 6 | Partial capture |
| 10-12 10:16 | 40m | - / -9 | ER1VS | -4 / - | 2 | ✓ Closing fragment |
| 10-10 13:35 | 10m | - / - | TT1GD | -18 / - | 2 | ✓ Closing fragment |
| 10-09 21:26 | 80m | -10 / -16 | JH4JNG | -15 / - | 2 | Partial capture |
| 10-07 20:33 | 40m | -10 / - | TT1GD | - / - | 5 | Partial capture |
| 10-07 20:27 | 40m | -14 / - | HS0ZOY | - / -11 | 8 | ✓ Closing fragment |
| 10-07 20:25 | 40m | -15 / - | TT1GD | - / - | 4 | Partial capture |
| 10-06 20:45 | 80m | +2 / - | IS0LLL | - / -8 | 7 | ✓ Closing fragment |
| 10-06 20:42 | 80m | +12 / -7 | EU1EU | +4 / - | 3 | ✓ Closing observed |
| 10-06 20:42 | 80m | +12 / -5 | YO4NF | +16 / - | 3 | ✓ Closing observed |
| 10-06 20:37 | 80m | +12 / - | TA4SSK | - / -11 | 7 | ✓ Closing fragment |
| 10-06 05:38 | 80m | -4 / - | KP2B | - / - | 4 | Partial capture |
| 10-05 20:57 | 160m | -16 / - | RL9F | - / - | 2 | Partial capture |
| 10-04 21:58 | 40m | +2 / - | PD0LBY | -6 / -2 | 3 | ✓ Closing observed |
| 10-04 21:58 | 40m | +7 / - | F6FHZ | -6 / -4 | 4 | Partial capture |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 061645 -5 1803 OA4ENG IZ4DYU R-19 061730 -22 1536 IZ4DYU UR9QQ KN77 061815 -6 1802 UR9QQ IZ4DYU -25 (x2) 064330 +0 1803 C31MF IZ4DYU JN54 (x6) 071100 -10 1487 ES6DO IZ4DYU JN54 (x3) 054445 +5 2320 DL/N0PNG IZ4DYU JN54 (x2)
UTC dB Audio Message 212100 -19 1432 EA8BS IZ4DYU R-25 212115 -18 1861 IZ4DYU EA8BS -18 212130 -17 1431 EA8BS IZ4DYU R-21 212245 -24 1861 IZ4DYU EA8BS RR73 212300 -24 1431 EA8BS IZ4DYU 73 213545 -21 2277 YO3FRI IZ4DYU JN54 (x2) 213730 -2 2057 IZ4DYU YO3FRI -21 (x3) 212145 -15 1959 UN0GY IZ4DYU JN54 (x3) 212815 -16 2046 RA0AF IZ4DYU JN54 (x2)
UTC dB Audio Message 222400 -6 2402 IZ4DYU PE1NPS 73 222400 +3 2302 IZ4DYU DO5PY JN49 222400 +12 1300 IZ4DYU 9A4ZM JN86 222430 +4 424 IZ4DYU SP5JMA KO02 222445 -4 1303 DO5PY IZ4DYU -03 222500 -1 424 IZ4DYU SP5JMA KO02 222515 +0 1302 DO5PY IZ4DYU RR73 222545 +1 1303 SP5JMA IZ4DYU -05 (x2) 222645 +0 1302 9A4ZM IZ4DYU +08 222745 +1 1303 EA1IOK IZ4DYU -10 (x5)
UTC dB Audio Message 093700 -22 1639 IZ4DYU EX8MEM -09 (x2) 100030 -17 2246 IZ4DYU <...> -04 122130 -7 651 IZ4DYU TN8GD -10 133530 -18 2187 IZ4DYU TT1GD RR73 (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.
CW
No CW receptions recorded for this callsign in the last 30 days.
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