DK4SDR — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving DK4SDR, decoded by SO8OO in southeastern Poland. 153 related FT8 messages, 34 CQ messages, observed on 80m, 40m, 20m, across 27 UTC dates. Heard between 2026-05-22 and 2026-08-20.
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 DK4SDR worked most often, as logged from our receiver:
Activity Heatmap
Locator transmitted by DK4SDR
Approximate centre of JN49, decoded 2026-08-20 14:50 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 | DK4SDR S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 08-20 14:41 | 20m | 0 / - | R0SV/P | - / - | 7 | Partial capture |
| 08-20 14:35 | 20m | -2 / - | AO25FDM | - / - | 4 | Partial capture |
| 08-20 13:23 | 20m | +4 / - | SP6AMI | - / +1 | 2 | ✓ Closing fragment |
| 08-20 13:22 | 20m | +4 / - | DL5DQZ | - / 0 | 2 | ✓ Closing fragment |
| 08-20 13:19 | 20m | +2 / - | <...> | - / - | 5 | Partial capture |
| 08-20 13:17 | 20m | +1 / - | CT1END/P | - / - | 4 | Partial capture |
| 08-20 10:39 | 10m | -9 / - | <...> | - / - | 5 | Partial capture |
| 08-20 10:24 | 10m | -4 / - | <...> | - / - | 2 | Partial capture |
| 08-20 10:04 | 10m | -6 / - | <...> | - / - | 12 | Partial capture |
| 08-19 15:23 | 10m | -14 / - | <...> | - / - | 2 | Partial capture |
| 08-19 15:04 | 10m | -10 / - | <...> | - / -9 | 11 | Partial capture |
| 08-18 19:36 | 40m | -2 / - | <...> | - / - | 2 | Partial capture |
| 08-18 19:31 | 40m | -9 / - | 3B9/SQ9UM | - / - | 2 | Partial capture |
| 08-18 19:29 | 40m | -10 / - | DL8MAK/P | - / - | 2 | Partial capture |
| 08-18 19:27 | 40m | -7 / - | <...> | - / - | 2 | Partial capture |
| 08-17 18:25 | 80m | -9 / 0 | ES2AJ | +14 / - | 4 | ✓ Closing observed |
| 08-17 18:21 | 40m | -7 / - | VJ6X | - / - | 7 | Partial capture |
| 08-17 16:52 | 40m | -14 / - | <...> | - / -12 | 2 | Partial capture |
| 08-16 20:07 | 40m | -1 / - | 8B81JB | - / -25 | 4 | Partial capture |
| 08-16 20:02 | 40m | +2 / - | <...> | - / -17 | 11 | Partial capture |
| 08-16 20:00 | 40m | +2 / - | 8B81JB | - / -17 | 4 | Partial capture |
| 08-16 19:53 | 40m | +1 / - | <...> | - / -17 | 13 | Partial capture |
| 08-16 19:41 | 40m | +2 / - | <...> | - / - | 15 | Partial capture |
| 08-16 19:37 | 40m | +2 / - | <...> | - / - | 4 | Partial capture |
| 08-16 16:14 | 20m | +4 / - | DL1BBO | - / -10 | 2 | ✓ Closing fragment |
| 08-16 16:06 | 20m | -4 / - | PF1B | - / -7 | 2 | ✓ Closing fragment |
| 08-16 16:05 | 20m | -7 / - | <...> | - / -19 | 2 | Partial capture |
| 08-15 15:59 | 20m | -14 / - | OZ5ESB/LH | - / - | 2 | Partial capture |
| 08-15 15:53 | 20m | -1 / - | <...> | - / - | 3 | Partial capture |
| 08-07 16:12 | 20m | - / -14 | R4IK | -5 / - | 2 | Partial capture |
| 08-07 14:33 | 20m | -22 / - | DL6ON | - / +3 | 2 | Partial capture |
| 08-07 14:31 | 20m | -17 / - | PD1ADA | - / -7 | 3 | ✓ Closing fragment |
| 08-07 14:25 | 20m | - / -4 | MM7FTH | -9 / - | 5 | Partial capture |
| 08-07 14:22 | 20m | -12 / - | M7GYP/P | - / -7 | 2 | ✓ Closing fragment |
| 08-07 14:10 | 20m | -13 / - | <...> | - / -16 | 3 | Partial capture |
| 08-07 14:02 | 20m | - / -10 | IW2DNI | -9 / - | 3 | ✓ Closing fragment |
| 08-07 14:02 | 20m | -13 / - | RK3AQ | -20 / -4 | 3 | ✓ Closing observed |
| 08-06 11:13 | 20m | -1 / - | G3TXZ | - / -3 | 2 | ✓ Closing fragment |
| 08-06 11:11 | 20m | 0 / -17 | 4O4DB | -10 / -18 | 8 | ✓ Full exchange observed |
| 08-06 11:02 | 20m | 0 / - | HA7TM | - / -4 | 8 | Partial capture |
| 08-06 10:57 | 20m | -6 / - | HA7TM | - / -9 | 2 | Partial capture |
| 08-06 10:49 | 20m | -10 / - | UA4FKT | -2 / -7 | 3 | Partial capture |
| 08-06 10:47 | 20m | -8 / - | YO5PHL | - / -16 | 3 | ✓ Closing fragment |
| 08-06 10:45 | 20m | -4 / - | EA2BHE | -13 / -18 | 3 | ✓ Closing observed |
| 08-06 10:45 | 20m | - / - | G3RPF | -12 / - | 3 | Partial capture |
| 08-06 10:36 | 20m | -2 / - | HA3MN | - / - | 3 | Partial capture |
| 08-06 10:22 | 20m | 0 / - | HA3MN | - / - | 10 | Partial capture |
| 07-30 19:25 | 80m | - / - | UA4FKT | +14 / - | 3 | Partial capture |
| 07-30 19:23 | 80m | +12 / - | <...> | - / -4 | 2 | Partial capture |
| 07-30 19:23 | 80m | 0 / -3 | YR50NADIA | +6 / - | 2 | Partial capture |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 132330 +3 1952 SP6AMI DK4SDR R+01 (x2) 143545 +0 2232 AO25FDM DK4SDR JN49 (x4) 143745 -1 2082 F8KIC/P DK4SDR JN49 144145 -1 2127 R0SV/P DK4SDR JN49 (x7) 145015 +7 1643 <...> DK4SDR JN49
UTC dB Audio Message 100615 -5 2597 <...> DK4SDR JN49 (x15)
UTC dB Audio Message 182215 +0 3026 VJ6X DK4SDR JN49 (x5) 192715 -8 2455 <...> DK4SDR JN49 (x2) 192845 -6 954 DP75BAC DK4SDR JN49 192915 -10 961 DL8MAK/P DK4SDR JN49 (x2) 193115 -10 2202 3B9/SQ9UM DK4SDR JN49 (x2) 193215 -11 2272 <...> DK4SDR JN49 (x3)
UTC dB Audio Message 192315 +0 1048 <YR50NADIA> DK4SDR JN49 192345 +13 2790 <...> DK4SDR JN49 192400 +6 2333 DK4SDR YR50NADIA -03 192415 +12 2790 <...> DK4SDR R-04 192515 +11 2790 CQ DK4SDR JN49 192530 +15 2788 DK4SDR UA4FKT LO23 (x3) 180615 +0 2408 <8C81KS> DK4SDR JN49 180800 -21 1597 DK4SDR <...> -18 182530 -19 1549 DK4SDR DK5OPA R+09 182530 +16 2512 DK4SDR ES2AJ KO29 (x3) 182645 -9 1779 ES2AJ DK4SDR 73
Decoder S/N history by band
Daily averages across messages associated with this profile as decoded at SO8OO.