RC5F — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving RC5F, decoded by SO8OO in southeastern Poland. 3,315 related FT8 messages, 1,757 CQ messages, observed on 80m, 40m, 20m, 10m, across 89 UTC dates. Heard between 2026-05-26 and 2026-08-23.
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 RC5F worked most often, as logged from our receiver:
Activity Heatmap
Locator transmitted by RC5F
Approximate centre of KO85, decoded 2026-08-23 18:51 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 | RC5F S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 08-23 17:35 | 20m | -22 / - | SQ3DVR | - / -2 | 2 | Partial capture |
| 08-23 14:33 | 20m | -9 / - | YB7FII | - / - | 3 | Partial capture |
| 08-23 14:32 | 20m | -10 / - | SP2SPP | - / - | 2 | Partial capture |
| 08-23 14:29 | 20m | - / - | TA3NK | -8 / - | 9 | Partial capture |
| 08-23 14:24 | 20m | -6 / - | PA2RSD | - / - | 2 | Partial capture |
| 08-22 18:28 | 20m | -5 / +4 | EA2WX/P | -6 / -17 | 4 | Partial capture |
| 08-22 18:17 | 20m | 0 / - | MW1CFA | -6 / - | 12 | Partial capture |
| 08-22 18:05 | 20m | -2 / -3 | IZ4TOA | +8 / - | 3 | ✓ Closing observed |
| 08-22 08:09 | 10m | - / -4 | SV9MBL | -17 / - | 3 | Partial capture |
| 08-22 07:05 | 20m | 0 / - | SP8S/P | - / - | 2 | Partial capture |
| 08-22 07:04 | 20m | -4 / - | EA3CY | - / -18 | 2 | ✓ Closing fragment |
| 08-22 06:57 | 20m | +3 / -7 | PD4HT | -4 / -10 | 8 | ✓ Full exchange observed |
| 08-22 05:58 | 20m | +3 / - | II7MGLE | - / - | 4 | Partial capture |
| 08-22 05:56 | 20m | -2 / - | VK4BPK | - / - | 2 | Partial capture |
| 08-22 05:50 | 20m | -11 / -3 | PE4BEN | 0 / -4 | 7 | ✓ Full exchange observed |
| 08-22 05:48 | 20m | -8 / -4 | DL1EHF | -16 / - | 4 | ✓ Closing observed |
| 08-22 05:44 | 20m | -9 / - | S54NA | - / -7 | 3 | ✓ Closing fragment |
| 08-22 05:43 | 20m | 0 / - | SP6OUX | - / - | 2 | Partial capture |
| 08-22 05:41 | 20m | - / +7 | <...> | -2 / - | 2 | Partial capture |
| 08-22 05:41 | 20m | 0 / - | GB50PUNK | - / -5 | 3 | Partial capture |
| 08-22 05:37 | 20m | -3 / - | SP3OZW | - / -5 | 5 | ✓ Closing fragment |
| 08-22 05:29 | 20m | 0 / - | II7MGFG | - / - | 2 | Partial capture |
| 08-22 05:26 | 20m | +6 / - | II7MGLE | - / -5 | 4 | Partial capture |
| 08-22 05:23 | 20m | +4 / - | OK1VCB | - / -4 | 7 | ✓ Closing fragment |
| 08-22 05:20 | 20m | +4 / - | <...> | - / -15 | 4 | Partial capture |
| 08-21 07:30 | 20m | -8 / - | F5HND | - / -4 | 3 | ✓ Closing fragment |
| 08-21 07:19 | 20m | -5 / - | LA4WGA | - / -9 | 6 | ✓ Closing fragment |
| 08-21 07:11 | 20m | -8 / -11 | M8KHC | -18 / - | 3 | ✓ Closing observed |
| 08-21 07:04 | 20m | -5 / - | OJ0YL | - / - | 10 | Partial capture |
| 08-21 07:00 | 20m | -2 / - | OJ0YL | - / - | 2 | Partial capture |
| 08-21 06:56 | 20m | -12 / - | M7KSV | - / -14 | 2 | Partial capture |
| 08-21 06:01 | 20m | +8 / -1 | SP8S/P | -5 / - | 5 | Partial capture |
| 08-21 05:58 | 20m | +4 / - | M0GLV | - / -6 | 5 | ✓ Closing fragment |
| 08-21 05:57 | 20m | +5 / -6 | F5MOO | -16 / -8 | 4 | ✓ Full exchange observed |
| 08-21 05:55 | 20m | +4 / - | EA1KCU | - / -19 | 4 | ✓ Closing fragment |
| 08-21 05:53 | 20m | +1 / - | RA4CEH | - / +2 | 3 | ✓ Closing fragment |
| 08-21 04:53 | 20m | -1 / - | <...> | - / - | 14 | Partial capture |
| 08-21 04:49 | 20m | +6 / - | AF6SA | - / - | 3 | Partial capture |
| 08-21 04:38 | 20m | -4 / - | DF2TG | - / -16 | 2 | ✓ Closing fragment |
| 08-21 04:36 | 20m | -9 / - | <...> | - / - | 2 | Partial capture |
| 08-21 04:33 | 20m | -3 / - | AF0E | - / -3 | 5 | ✓ Closing fragment |
| 08-20 20:03 | 20m | - / - | F8GAF | -7 / - | 2 | Partial capture |
| 08-20 20:00 | 20m | 0 / - | DL4NDK | - / - | 2 | ✓ Closing fragment |
| 08-20 19:58 | 20m | -2 / - | LA4NM | - / -8 | 4 | ✓ Closing fragment |
| 08-20 19:54 | 20m | -1 / - | LA/PE1OZS | - / -15 | 4 | Partial capture |
| 08-20 19:50 | 20m | +3 / - | HF0TT | - / -11 | 5 | ✓ Closing fragment |
| 08-20 19:47 | 20m | - / -11 | <...> | +2 / - | 2 | Partial capture |
| 08-20 19:47 | 20m | - / - | TA3NK | -9 / - | 2 | Partial capture |
| 08-20 19:46 | 20m | - / - | CT1BFP | -3 / - | 11 | Partial capture |
| 08-20 19:41 | 20m | +1 / -9 | D2IM | -2 / -6 | 6 | ✓ Full exchange observed |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 143130 -5 1068 RC5F TA3NK KM39 (x3) 143245 -8 1395 SP2SPP RC5F KO85 143300 -13 1069 RC5F TA3NK KM39 143315 -13 1395 SP2SPP RC5F KO85 143330 -13 1069 RC5F TA3NK KM39 143345 -7 1395 YB7FII RC5F KO85 (x3) 143515 -12 1395 OH7FQH RC5F KO85 173515 -20 1780 SQ3DVR RC5F KO85 (x2) 174715 -3 1015 RC5F PA4AM +07 185130 +6 777 MM6EQY RC5F KO85
UTC dB Audio Message 112315 -12 1127 EU6AX RC5F KO85 (x2) 112445 -1 1127 EA5DX RC5F KO85 112515 -9 1127 CQ RC5F KO85 112545 -6 1127 DL1ABI RC5F KO85 112615 -6 1127 SP8PBP RC5F KO85 112645 -8 1127 CQ RC5F KO85 (x4) 114445 -5 1235 SP8PBP RC5F KO85 (x2) 080915 -16 1576 RC5F SV9MBL -04 (x3)
UTC dB Audio Message 161700 -7 1706 <...> RC5F KO85 161730 -8 1705 SP5OSF RC5F KO85 161745 -8 2353 RC5F SP5OSF +10 161800 -5 1705 SP5OSF RC5F R-10 161815 -8 2353 RC5F SP5OSF RR73 161830 -7 1705 SP5OSF RC5F 73 161900 -6 1705 R9VA RC5F KO85 161915 -10 2353 RC5F SP5OSF R+03 161930 -4 1704 R9VA RC5F KO85 162000 -5 1704 RY3DAR RC5F KO85 162145 -5 1704 R3PLN/P RC5F KO85 (x5)
UTC dB Audio Message 194200 -1 1001 RC5F SQ8GKR KO11
Decoder S/N history by band
Daily averages across messages associated with this profile as decoded at SO8OO.