IU5TUD — 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 IU5TUD, decoded by SO8OO in southeastern Poland. 650 FT8 messages attributed to this token as transmitter, on 160m, 80m, 40m, 20m, across 46 UTC dates in the available aggregate history. Observed between 2026-06-09 and 2026-11-04.
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 650 FT8 messages attributed to IU5TUD as the transmitting token by decoded message structure across 46 UTC dates in the available aggregate history. The largest monitored-band total was 160 m (57%), followed by 80 m (34%) and 40 m (8%). Most decodes (94%) fell within the six-hour window 20:00-02:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -11 dB.
Overview
Bands
Last attributed message: 2026-11-04 23:50 UTC
Observed FT8 message patterns
- Attributed sample
- 650 messages
- Active dates
- 46 UTC dates
- Estimated median S/N
- -11 dB
- Estimated 10th-90th percentile
- -19 to +0.8 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 165, moderate (-15 to -9 dB) 251, strong (≥ -8 dB) 234.
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 IU5TUD 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 IU5TUD
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
- JN53 · 88 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 1,089 km (approx.)
- Last such locator decoded
- 2026-11-04 23:02 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 | IU5TUD S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 11-04 23:50 | 80m | -3 / 0 | LZ1ZF | +6 / - | 3 | ✓ Closing observed |
| 11-04 23:06 | 160m | -15 / - | OE2AGZ | - / -11 | 2 | ✓ Closing fragment |
| 11-04 22:59 | 160m | -4 / - | SM4IED | - / +2 | 2 | Partial capture |
| 11-04 22:57 | 160m | -20 / - | LA9JKA | - / -10 | 2 | Partial capture |
| 11-04 22:54 | 160m | -13 / - | M0HJJ | - / -14 | 2 | Partial capture |
| 11-04 22:52 | 160m | -14 / -19 | CT1EKY | -20 / -9 | 5 | ✓ Full exchange observed |
| 11-04 22:48 | 160m | - / -9 | DJ7WG | +2 / - | 4 | ✓ Closing fragment |
| 11-04 22:48 | 160m | -22 / -9 | IZ8VYU | -3 / - | 4 | ✓ Closing observed |
| 11-04 22:47 | 160m | - / -16 | DD3JN | 0 / - | 2 | Partial capture |
| 11-04 22:45 | 160m | -12 / -11 | SP5EXA | +18 / -10 | 4 | ✓ Full exchange observed |
| 11-01 02:18 | 40m | - / +7 | OH1CIN | -22 / - | 2 | ✓ Closing fragment |
| 11-01 01:50 | 160m | -10 / - | 6W/IK2HKT | - / -17 | 3 | Partial capture |
| 11-01 01:48 | 160m | -15 / - | PP5JR | - / -17 | 4 | Partial capture |
| 11-01 01:44 | 160m | -10 / - | 6W/IK2HKT | - / -15 | 6 | Partial capture |
| 11-01 01:40 | 160m | -10 / -12 | S56EPX | +2 / -8 | 4 | ✓ Full exchange observed |
| 11-01 01:37 | 160m | -7 / -1 | IW4AOT | 0 / +3 | 5 | ✓ Full exchange observed |
| 11-01 01:33 | 80m | -10 / -7 | 5B4AMX | -2 / -7 | 3 | ✓ Full exchange observed |
| 11-01 01:30 | 80m | +6 / - | I5MPN | - / - | 2 | Partial capture |
| 11-01 01:28 | 80m | -5 / - | 9A2WA | - / -8 | 3 | ✓ Closing fragment |
| 11-01 01:27 | 80m | -10 / -4 | UR5FLN | +2 / +1 | 4 | ✓ Full exchange observed |
| 10-25 23:41 | 160m | -12 / - | S9R | - / -24 | 9 | Partial capture |
| 10-25 23:39 | 160m | -10 / -15 | EA4D | -17 / -2 | 4 | ✓ Full exchange observed |
| 10-25 23:35 | 160m | -19 / - | S9R | - / -21 | 4 | Partial capture |
| 10-25 23:30 | 160m | -14 / -12 | 8S2DX | -15 / -13 | 7 | ✓ Full exchange observed |
| 10-25 23:30 | 160m | -10 / +9 | DO2HKV | +3 / +4 | 4 | ✓ Full exchange observed |
| 10-25 23:26 | 160m | -16 / - | S9R | - / -22 | 3 | Partial capture |
| 10-25 23:25 | 160m | -10 / -21 | 8S2DX | -16 / -15 | 4 | ✓ Full exchange observed |
| 10-22 01:00 | 160m | -6 / 0 | F4BPO | +5 / - | 2 | ✓ Closing observed |
| 10-21 21:06 | 160m | -18 / -10 | DD7EE | +2 / -9 | 4 | ✓ Full exchange observed |
| 10-19 22:14 | 160m | -5 / - | UA7K | - / -6 | 2 | Partial capture |
| 10-19 22:04 | 40m | -4 / -3 | OZ0JX | -6 / - | 4 | ✓ Full exchange observed |
| 10-19 22:03 | 40m | -16 / - | YO6BGT | - / -8 | 2 | ✓ Closing fragment |
| 10-19 21:49 | 160m | - / -3 | OE3OOG | +6 / - | 3 | ✓ Closing fragment |
| 10-19 21:49 | 160m | -16 / -5 | OM2WW | +10 / - | 3 | ✓ Closing observed |
| 10-15 18:50 | 160m | -24 / -25 | HA5AO | -4 / - | 3 | ✓ Closing observed |
| 10-14 21:08 | 160m | -4 / -11 | SO1CJ | +2 / -7 | 4 | ✓ Full exchange observed |
| 10-14 21:06 | 160m | -5 / - | EB4DMH | - / -11 | 2 | Partial capture |
| 10-14 21:05 | 160m | -14 / -2 | DK6WS | -7 / -1 | 4 | ✓ Full exchange observed |
| 10-14 20:23 | 80m | 0 / -4 | DO1ID | 0 / -4 | 4 | ✓ Full exchange observed |
| 10-14 20:20 | 80m | -1 / - | EW6BZ | -4 / -15 | 5 | ✓ Closing observed |
| 10-13 22:34 | 40m | - / -12 | PD2PE | -4 / - | 2 | ✓ Closing fragment |
| 10-12 23:15 | 160m | +2 / -13 | DO1SWC | -6 / -9 | 4 | Partial capture |
| 10-12 22:30 | 160m | -6 / - | EA8BS | - / -13 | 2 | Partial capture |
| 10-12 22:30 | 160m | - / - | R4FJ | -14 / - | 2 | Partial capture |
| 10-12 22:27 | 160m | -5 / -15 | RX6DA | -11 / -13 | 5 | ✓ Full exchange observed |
| 10-09 00:18 | 160m | -9 / +2 | HA1DAE | +9 / - | 6 | ✓ Full exchange observed |
| 10-08 23:17 | 160m | -12 / - | DK9WI | - / -5 | 2 | Partial capture |
| 10-08 23:16 | 160m | -13 / -8 | OM3PC | +12 / - | 3 | ✓ Closing observed |
| 10-08 00:57 | 160m | -10 / - | R7DX | - / -10 | 3 | Partial capture |
| 10-08 00:33 | 80m | -6 / - | RD9U | - / -20 | 2 | Partial capture |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 012745 -12 1244 UR5FLN IU5TUD +01 012800 +2 1245 IU5TUD UR5FLN R-04 012815 -8 1244 UR5FLN IU5TUD RR73 012830 +2 1245 IU5TUD UR5FLN RR73 012845 -6 1245 9A2WA IU5TUD -08 (x3) 013030 +4 897 I5MPN IU5TUD +16 (x2) 013345 -10 2004 5B4AMX IU5TUD -07 013400 -1 2003 IU5TUD 5B4AMX R-07 (x2) 235015 +10 1714 IU5TUD LZ1ZF R+00 235030 -3 1715 LZ1ZF IU5TUD RR73 235045 +2 1714 IU5TUD LZ1ZF 73
UTC dB Audio Message 225200 -15 1419 CT1EKY IU5TUD -09 (x2) 225245 -23 1418 IU5TUD CT1EKY R-19 225300 -14 2052 CT1EKY IU5TUD RR73 225315 -18 1418 IU5TUD CT1EKY 73 225415 -11 1070 M0HJJ IU5TUD -14 (x2) 225715 -22 334 LA9JKA IU5TUD -10 (x2) 225930 -6 720 SM4IED IU5TUD +02 (x2) 230030 -8 720 CQ IU5TUD JN53 (x2) 230615 -18 1285 OE2AGZ IU5TUD -11 (x2)
UTC dB Audio Message 004745 +0 2128 HI8J IU5TUD -05 222415 -14 760 7Z1BQ IU5TUD RR73 222800 -21 1277 SP4BB IU5TUD RR73 223415 -4 1982 IU5TUD PD2PE R-12 (x2) 223845 -10 1079 8Q7PR IU5TUD JN53 224915 -4 344 OZ7BX IU5TUD JN53 220345 -17 1434 YO6BGT IU5TUD -08 (x2) 220445 -4 516 OZ0JX IU5TUD +11 220500 -4 516 IU5TUD OZ0JX R-03 220515 -4 516 OZ0JX IU5TUD RR73 220530 -7 515 IU5TUD OZ0JX 73 021800 -21 1827 IU5TUD OH1CIN R+07 (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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