YO5OSF — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving YO5OSF, decoded by SO8OO in southeastern Poland. 683 related FT8 messages, 165 CQ messages, observed on 40m, 20m, 10m, across 45 UTC dates. Heard between 2026-05-25 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 YO5OSF worked most often, as logged from our receiver:
Activity Heatmap
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 | YO5OSF S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 08-23 16:05 | 40m | +5 / 0 | YO4KMU | -8 / - | 3 | ✓ Closing observed |
| 08-23 16:04 | 40m | +6 / +10 | SP9CXN | +5 / -1 | 7 | ✓ Full exchange observed |
| 08-23 14:48 | 40m | -1 / - | SQ3EWA | - / -19 | 5 | ✓ Closing fragment |
| 08-23 14:46 | 40m | +3 / - | IZ0ZZV | - / -10 | 3 | ✓ Closing fragment |
| 08-23 14:45 | 40m | 0 / - | SQ3EWA | - / -15 | 3 | Partial capture |
| 08-23 14:44 | 40m | +6 / - | 4X4ZP | - / -13 | 2 | Partial capture |
| 08-23 11:10 | 40m | +2 / +7 | SQ5OMY | -10 / -9 | 4 | ✓ Full exchange observed |
| 08-22 11:46 | 40m | 0 / - | II1LH | - / -18 | 2 | ✓ Closing fragment |
| 08-22 11:44 | 40m | -12 / - | SP9CXN | -4 / 0 | 4 | ✓ Full exchange observed |
| 08-22 11:42 | 40m | -12 / - | II1LH | - / -8 | 2 | Partial capture |
| 08-22 09:09 | 40m | +1 / +7 | IZ4AIF | -6 / 0 | 6 | ✓ Full exchange observed |
| 08-22 09:08 | 40m | 0 / - | IZ0ZZV | - / -17 | 2 | ✓ Closing fragment |
| 08-22 09:07 | 40m | +2 / +7 | SP9DOU | -12 / +1 | 3 | ✓ Full exchange observed |
| 08-22 07:31 | 20m | -10 / - | SQ8NGI | -16 / -3 | 2 | ✓ Closing observed |
| 08-22 06:50 | 40m | +6 / 0 | SQ8NGI | -24 / -12 | 4 | ✓ Full exchange observed |
| 08-21 07:14 | 40m | +2 / - | IU0TGS | - / -13 | 2 | ✓ Closing fragment |
| 08-21 07:10 | 40m | +6 / - | <...> | - / -15 | 5 | Partial capture |
| 08-20 07:57 | 40m | -9 / - | SP5ROM | - / -8 | 3 | ✓ Closing fragment |
| 08-20 07:54 | 40m | -9 / - | SQ5EKY | - / -4 | 6 | ✓ Closing fragment |
| 08-19 06:16 | 40m | -12 / -2 | SP5ROM | -17 / -1 | 8 | ✓ Full exchange observed |
| 08-16 16:38 | 40m | -6 / - | SQ9PCO | -16 / -4 | 9 | ✓ Closing observed |
| 08-16 16:04 | 40m | -12 / - | SP9KKA | - / -6 | 6 | ✓ Closing fragment |
| 08-16 06:59 | 40m | -8 / - | SP8RPA | - / -15 | 2 | ✓ Closing fragment |
| 08-15 12:28 | 40m | -7 / - | DK0ACI | - / -16 | 4 | ✓ Closing fragment |
| 08-07 16:51 | 40m | -11 / - | <...> | - / 0 | 3 | Partial capture |
| 08-07 16:46 | 40m | -7 / - | IZ5RKH | - / -3 | 3 | Partial capture |
| 08-07 08:38 | 40m | -20 / - | SN0GIP | - / 0 | 2 | ✓ Closing fragment |
| 08-07 07:21 | 40m | -9 / - | IZ5RKH | - / -9 | 5 | ✓ Closing fragment |
| 08-07 06:43 | 40m | -14 / - | IZ0ZZV | - / - | 3 | ✓ Closing fragment |
| 08-07 06:42 | 40m | -13 / +4 | SP8RPA | -10 / - | 3 | ✓ Closing observed |
| 08-05 10:10 | 40m | -8 / - | SQ3WL | - / -7 | 2 | ✓ Closing fragment |
| 08-05 06:25 | 40m | -5 / - | <...> | - / 0 | 2 | Partial capture |
| 08-05 04:59 | 40m | -6 / - | SP2LMG | - / -13 | 2 | Partial capture |
| 08-04 14:12 | 40m | -23 / -4 | SP9TEX | -14 / -9 | 4 | ✓ Full exchange observed |
| 08-04 09:18 | 40m | -10 / - | DF3GL | - / -14 | 2 | ✓ Closing fragment |
| 08-04 09:17 | 40m | -10 / - | SP2LMG | - / -12 | 2 | ✓ Closing fragment |
| 08-04 08:40 | 40m | - / -4 | IW2OEF | -18 / - | 2 | ✓ Closing fragment |
| 08-03 15:46 | 40m | -7 / - | SQ9AWN | - / 0 | 4 | ✓ Closing fragment |
| 08-02 09:06 | 40m | -15 / - | SQ3WL | - / -6 | 3 | Partial capture |
| 08-01 17:34 | 40m | -7 / - | IU5KWL | - / -8 | 3 | Partial capture |
| 08-01 17:32 | 40m | -9 / -1 | SQ9MEZ | -8 / +2 | 6 | ✓ Full exchange observed |
| 08-01 16:45 | 40m | -17 / - | SQ9AWN | -15 / -3 | 6 | ✓ Full exchange observed |
| 08-01 05:22 | 40m | -10 / - | <...> | - / 0 | 3 | Partial capture |
| 08-01 05:21 | 40m | - / +3 | IW2OEF | -16 / - | 2 | ✓ Closing fragment |
| 07-28 14:59 | 20m | - / -26 | PA4PH | -20 / - | 6 | Partial capture |
| 07-28 14:51 | 20m | - / - | PD3LKN | -17 / - | 5 | Partial capture |
| 07-27 04:10 | 40m | - / 0 | IZ2QPP | -15 / - | 4 | Partial capture |
| 07-26 09:03 | 40m | -16 / - | IZ0ZZV | - / -21 | 3 | ✓ Closing fragment |
| 07-26 08:59 | 40m | -18 / - | IU0KNS | - / -14 | 4 | Partial capture |
| 07-23 05:38 | 40m | -14 / - | IZ2QPP | - / -6 | 2 | ✓ Closing fragment |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 144845 +3 895 SQ3EWA YO5OSF -19 (x5) 160445 +0 1396 SP9CXN YO5OSF -01 (x2) 160545 -7 2144 YO5OSF YO4KMU R+00 160600 +5 773 YO4KMU YO5OSF RR73 160615 -9 2144 YO5OSF YO4KMU 73 160645 +7 774 SP9CXN YO5OSF +00 (x2) 160730 +9 1164 YO5OSF SP9CXN R+10 160745 +9 773 SP9CXN YO5OSF RR73 160800 +1 1164 YO5OSF SP9CXN 73
UTC dB Audio Message 145115 -19 1198 YO5OSF PD3LKN JO22 145245 -21 1527 YO5OSF PA4PH JO22 145245 -19 1198 YO5OSF PD3LKN JO22 (x4) 145615 -19 2027 YO5OSF PA4PH JO22 (x7) 073145 -10 1512 SQ8NGI YO5OSF -03 073230 -16 1401 YO5OSF SQ8NGI 73
UTC dB Audio Message 124345 -13 686 YO5OSF ZS6MGM 73 124600 -12 2495 YO5OSF ZS5HR 73 162815 -9 2134 YO5OSF AO26PTM R-10 081315 -11 1205 YO5OSF A61DI R+02 (x4) 084645 -1 1175 YO5OSF II2WWA R-03 084815 +15 2851 YO5OSF II6WWA R+13 (x2) 131430 -19 2074 YO5OSF IR0WWA R-12
Decoder S/N history by band
Daily averages across messages associated with this profile as decoded at SO8OO.