DF4SI — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving DF4SI, decoded by SO8OO in southeastern Poland. 688 related FT8 messages, 243 CQ messages, observed on 60m, 40m, 20m, across 19 UTC dates. Heard between 2026-04-22 and 2026-07-11.
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 DF4SI worked most often, as logged from our receiver:
Activity Heatmap
Locator transmitted by DF4SI
Approximate centre of JN58, decoded 2026-07-07 19:21 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 | DF4SI S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 07-11 22:22 | 20m | - / -12 | EG5HSV | -4 / - | 4 | ✓ Closing fragment |
| 07-11 19:17 | 20m | -2 / - | XU7O | - / -14 | 2 | ✓ Closing fragment |
| 07-07 19:21 | 20m | +9 / -2 | EA2DYB | -5 / +7 | 5 | ✓ Full exchange observed |
| 07-07 19:18 | 20m | +6 / - | LZ1ZF | -4 / -1 | 3 | ✓ Closing observed |
| 07-07 19:16 | 20m | +4 / - | KG4OJT | - / -16 | 4 | ✓ Closing fragment |
| 07-07 19:14 | 20m | +4 / - | 5N0YEN | - / - | 4 | Partial capture |
| 07-07 19:09 | 20m | 0 / - | 5N0YEN | - / - | 2 | Partial capture |
| 06-25 18:52 | 40m | - / -15 | DK3TNA | -12 / - | 4 | ✓ Closing fragment |
| 06-25 18:45 | 40m | - / - | F5RRS | -14 / - | 3 | Partial capture |
| 06-16 18:58 | 40m | - / - | DG2EBG | -14 / - | 2 | Partial capture |
| 06-16 18:54 | 40m | - / - | DL2YBG | -2 / - | 4 | Partial capture |
| 06-16 18:53 | 40m | - / - | DG2EBG | -12 / - | 4 | Partial capture |
| 06-16 18:42 | 40m | - / - | DL6MRS | +12 / - | 2 | Partial capture |
| 06-16 18:38 | 40m | - / - | DG2EBG | -16 / - | 3 | Partial capture |
| 06-16 18:35 | 40m | - / - | E70SZ | -1 / - | 6 | Partial capture |
| 06-16 18:25 | 40m | - / - | UX7QV | -4 / - | 7 | Partial capture |
| 06-16 17:56 | 40m | - / -9 | 5P1KZX | 0 / - | 2 | ✓ Closing fragment |
| 06-16 17:31 | 40m | - / -9 | DK7UY | -12 / - | 5 | ✓ Closing fragment |
| 06-16 17:29 | 40m | - / -6 | DF0KK | -2 / - | 3 | ✓ Closing fragment |
| 06-16 17:28 | 40m | - / - | DK7UY | -11 / - | 4 | Partial capture |
| 06-16 17:27 | 40m | - / - | DM5ME | -4 / - | 2 | Partial capture |
| 06-14 19:07 | 20m | +6 / - | 2E1HAT | - / - | 10 | Partial capture |
| 06-14 19:04 | 20m | -4 / - | JA4FKX | - / - | 2 | ✓ Closing fragment |
| 06-14 18:43 | 20m | - / -3 | TA2ANK | -10 / - | 2 | ✓ Closing fragment |
| 06-09 14:18 | 20m | +6 / - | 2E1HAT | - / +8 | 6 | Partial capture |
| 06-09 14:17 | 20m | - / -3 | RD4AAK | -14 / - | 2 | Partial capture |
| 06-09 14:10 | 20m | +12 / - | MD0CCE | - / +2 | 11 | ✓ Closing fragment |
| 06-02 20:41 | 40m | - / - | OZ5AGJ | 0 / - | 2 | Partial capture |
| 06-02 20:22 | 40m | -9 / -14 | DG2EKO | -2 / -3 | 7 | ✓ Full exchange observed |
| 06-02 20:22 | 40m | - / - | IK4LZH | +3 / - | 4 | Partial capture |
| 06-02 20:21 | 40m | - / - | F1IQH | +2 / - | 4 | Partial capture |
| 06-02 20:18 | 40m | -10 / -6 | PD2HVT | -3 / -22 | 6 | ✓ Full exchange observed |
| 06-02 20:11 | 40m | - / - | SV1EKI | -5 / - | 5 | Partial capture |
| 06-02 19:57 | 40m | - / -10 | SV1EKI | -7 / - | 9 | Partial capture |
| 06-02 19:56 | 40m | - / -12 | SP5LST | -6 / - | 4 | Partial capture |
| 06-02 19:43 | 40m | -6 / - | IW2JMS | - / - | 2 | Partial capture |
| 06-02 19:29 | 40m | -4 / - | UX7QV | +6 / -5 | 8 | Partial capture |
| 06-02 19:20 | 40m | -8 / -18 | DK1GP | 0 / - | 5 | ✓ Closing observed |
| 06-02 19:20 | 40m | - / - | US2YW | +11 / - | 4 | Partial capture |
| 06-02 19:11 | 40m | -8 / -14 | SP9UPH | -6 / -11 | 7 | ✓ Full exchange observed |
| 06-02 19:04 | 40m | -2 / -11 | DL8TV | +1 / -11 | 7 | ✓ Full exchange observed |
| 06-02 19:04 | 40m | - / - | DM5KM | +9 / - | 7 | Partial capture |
| 06-02 19:00 | 40m | -6 / -13 | IZ0ZIP | +15 / - | 6 | ✓ Full exchange observed |
| 06-02 18:55 | 40m | -9 / - | IT9WCN | - / - | 5 | Partial capture |
| 06-02 18:53 | 40m | -4 / +1 | IW0QCR | +9 / -18 | 3 | ✓ Full exchange observed |
| 06-02 18:51 | 40m | -7 / - | OO0O | - / -3 | 2 | ✓ Closing fragment |
| 06-02 18:51 | 40m | - / - | F4HEA | +2 / - | 3 | Partial capture |
| 06-02 18:50 | 40m | - / -10 | IZ0ZIP | +12 / - | 2 | Partial capture |
| 06-02 18:35 | 40m | -7 / - | UA1ZFL | - / - | 3 | Partial capture |
| 06-02 18:03 | 60m | -11 / -1 | DB9LG | -10 / - | 3 | ✓ Full exchange observed |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 191900 +6 583 LZ1ZF DF4SI R-01 191915 -4 678 DF4SI LZ1ZF RR73 191930 +8 583 4X1UF DF4SI JN58 192100 +7 583 CQ DF4SI JN58 192115 -7 369 DF4SI EA2DYB IN83 192130 +9 583 EA2DYB DF4SI +07 192145 -5 369 DF4SI EA2DYB R-02 192200 +9 583 EA2DYB DF4SI RRR 192215 -2 369 DF4SI EA2DYB 73 191745 -1 582 XU7O DF4SI R-14 (x2) 222200 -10 508 DF4SI EG5HSV -12 (x4)
UTC dB Audio Message 185430 -13 1895 DF4SI DG2EBG JO31 185500 +1 2286 DF4SI DL2YBG JO42 185500 -12 1895 DF4SI DG2EBG JO31 185530 +1 2286 DF4SI DL2YBG JO42 (x2) 185800 -13 1900 DF4SI DG2EBG JO31 (x2) 184545 -15 1857 DF4SI F5RRS JN36 184545 -5 335 DF4SI RX7K KN74 184615 -14 1857 DF4SI F5RRS JN36 (x2) 185230 -17 1238 DF4SI DK3TNA JO62 (x4)
UTC dB Audio Message 175730 -11 683 CQ DF4SI JN58 (x6) 180330 -10 734 DF4SI DB9LG -01 180345 -11 686 DB9LG DF4SI R+11 180400 -11 734 DF4SI DB9LG RR73 181100 -13 276 CQ DF4SI JN58 a1 181800 -20 1572 DF4SI IQ0FR +01 184945 -17 1206 CQ DF4SI JN58
Decoder S/N history by band
Daily averages across messages associated with this profile as decoded at SO8OO.