IU5TTB — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving IU5TTB, decoded by SO8OO in southeastern Poland. 123 related FT8 messages, 46 CQ messages, observed on 40m, 20m, 10m, across 7 UTC dates. Heard between 2026-05-25 and 2026-08-22.
These are automated observations at the SO8OO receiver, not the station's official logbook. Times are UTC. Decoder S/N describes messages received at SO8OO; inferred entity and location data may be inaccurate for portable, remote or special-event operation.
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Overview
Frequent QSO partners observed at SO8OO
Stations IU5TTB worked most often, as logged from our receiver:
Activity Heatmap
Locator transmitted by IU5TTB
Approximate centre of JN53, decoded 2026-08-23 16:35 UTC. A transmitted locator is not proof of the operator's permanent location.
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 | IU5TTB S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 08-23 16:35 | 40m | -18 / - | GM3AND | - / -18 | 2 | Partial capture |
| 08-23 00:39 | 40m | -16 / - | EB2EMZ | - / -13 | 2 | Partial capture |
| 08-23 00:37 | 40m | -23 / - | UN7PPV | - / -24 | 2 | ✓ Closing fragment |
| 08-23 00:37 | 40m | -24 / -7 | EA5HM | -15 / - | 5 | ✓ Closing observed |
| 08-23 00:33 | 40m | - / - | ON4MAP | -24 / - | 2 | Partial capture |
| 08-23 00:31 | 40m | -16 / +2 | SV3AUW | -16 / -8 | 4 | ✓ Full exchange observed |
| 08-20 10:17 | 40m | - / -13 | HA1DUQ | -16 / - | 2 | ✓ Closing fragment |
| 08-20 10:13 | 40m | - / -1 | HA3GO | -9 / - | 2 | ✓ Closing fragment |
| 05-27 10:45 | 20m | - / -16 | DF6NL | -10 / - | 2 | ✓ Closing fragment |
| 05-27 10:43 | 20m | - / -15 | G0RVY | +4 / - | 3 | ✓ Closing fragment |
| 05-27 10:37 | 20m | - / 0 | ES2AJ | +9 / - | 3 | ✓ Closing fragment |
| 05-27 10:35 | 20m | - / -13 | UR5EPZ | -10 / - | 2 | ✓ Closing fragment |
| 05-27 10:33 | 20m | - / -9 | G5CTH | -3 / - | 3 | Partial capture |
| 05-26 16:37 | 40m | - / - | UT1UW | -6 / - | 4 | Partial capture |
| 05-26 16:37 | 40m | - / -15 | RT6Z | -10 / - | 3 | ✓ Closing fragment |
| 05-26 16:34 | 40m | - / - | UR5ROY | -14 / - | 2 | ✓ Closing fragment |
| 05-26 16:29 | 40m | -8 / -12 | SN1A | -3 / -3 | 3 | ✓ Full exchange observed |
| 05-26 16:17 | 40m | - / -21 | HF5A | -11 / - | 4 | ✓ Closing fragment |
| 05-26 16:13 | 40m | -16 / - | DM3PT | - / -14 | 2 | ✓ Closing fragment |
| 05-26 16:12 | 40m | -17 / -14 | DL5KBG | -10 / - | 3 | ✓ Closing observed |
| 05-26 16:10 | 40m | -10 / +1 | S58MU | +11 / -4 | 5 | ✓ Full exchange observed |
| 05-26 16:09 | 40m | -10 / - | I5SFU | - / -1 | 2 | ✓ Closing fragment |
| 05-26 16:06 | 40m | -9 / - | E70SZ | +2 / - | 4 | ✓ Closing observed |
| 05-26 16:03 | 40m | - / +4 | SX20RCK | -14 / - | 3 | Partial capture |
| 05-26 15:57 | 40m | -14 / - | S58MU | - / -9 | 4 | Partial capture |
| 05-26 15:51 | 40m | -18 / - | DJ0JG | - / -14 | 2 | ✓ Closing fragment |
| 05-26 15:47 | 40m | -18 / - | PD5DSL | - / - | 2 | Partial capture |
| 05-26 15:33 | 40m | -17 / - | F6FHZ | - / -16 | 2 | ✓ Closing fragment |
| 05-26 15:25 | 40m | -18 / +4 | DK8EW | +8 / -2 | 3 | ✓ Full exchange observed |
| 05-26 10:45 | 10m | -15 / -12 | DL5DQZ | -1 / -7 | 4 | ✓ Full exchange observed |
| 05-26 10:32 | 20m | -23 / - | F1PBZ | +1 / - | 3 | ✓ Closing observed |
| 05-26 10:21 | 20m | - / -24 | F4CWQ | -10 / - | 4 | Partial capture |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 003445 -14 1539 UX7QV IU5TTB -06 003500 -24 1337 IU5TTB ON4MAP JO20 003545 -18 1539 CQ IU5TTB JN53 003700 -18 1578 IU5TTB EA5HM IM99 003745 -24 1540 UN7PPV IU5TTB R-24 (x2) 003830 -18 1579 IU5TTB EA5HM IM99 (x2) 003915 -24 1540 EA5HM IU5TTB RR73 003930 -13 1578 IU5TTB EA5HM 73 003945 -16 1539 EB2EMZ IU5TTB -13 (x2) 163400 -24 1538 G4KVI IU5TTB JN53 163500 -18 1538 GM3AND IU5TTB JN53 (x2)
UTC dB Audio Message 103530 -9 1576 IU5TTB UR5EPZ R-13 (x2) 103700 +5 1576 IU5TTB ES2AJ +00 (x3) 104300 +6 599 IU5TTB G0RVY JO01 (x3) 104530 -8 895 IU5TTB DF6NL R-16 104530 -3 2905 IU5TTB G5CTH IO91 104600 -12 895 IU5TTB DF6NL 73 195630 -18 1575 CQ IU5TTB JN53 (x2) 162430 -18 1131 IU5TTB YO4GIY -19 002830 -24 499 IU5TTB <...> -18
UTC dB Audio Message 104415 -19 1588 CQ IU5TTB JN53 104545 -15 1589 DL5DQZ IU5TTB -07 104600 -5 1482 IU5TTB DL5DQZ JO61 (x3) 104945 -19 1590 GM0VGI IU5TTB JN53
Decoder S/N history by band
Daily averages across messages associated with this profile as decoded at SO8OO.