C21TS — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving C21TS, decoded by SO8OO in southeastern Poland. 1,497 related FT8 messages, 11 CQ messages, observed on 80m, 40m, 20m, 10m, across 38 UTC dates. Heard between 2026-04-21 and 2026-07-18.
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 C21TS 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 | C21TS S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 07-18 19:07 | 40m | - / -9 | HA8DX | -7 / - | 5 | ✓ Closing fragment |
| 07-18 19:03 | 40m | - / -9 | E72DX | -1 / - | 3 | ✓ Closing fragment |
| 07-18 18:46 | 40m | - / -15 | IK0SHH | -9 / - | 2 | ✓ Closing fragment |
| 07-18 09:04 | 20m | - / -17 | GM2TT | -21 / - | 2 | Partial capture |
| 07-17 20:44 | 20m | - / -18 | S55OO | +2 / - | 2 | Partial capture |
| 07-09 20:02 | 20m | - / -15 | PY2GZ | -18 / - | 3 | ✓ Closing fragment |
| 07-07 19:25 | 20m | - / - | SV1SAX | -10 / - | 2 | ✓ Closing fragment |
| 07-07 05:05 | 20m | - / - | EB5AL | -14 / - | 4 | Partial capture |
| 07-06 16:21 | 40m | - / -19 | UD6AVY | -16 / - | 2 | ✓ Closing fragment |
| 06-30 18:53 | 40m | - / - | SP3IOE | -3 / - | 6 | Partial capture |
| 06-21 18:37 | 20m | - / -24 | II9RICT | -4 / - | 3 | Partial capture |
| 06-21 18:36 | 20m | - / -14 | RZ6ALZ | -8 / - | 2 | ✓ Closing fragment |
| 06-21 17:26 | 20m | - / -23 | IK0XFD | -5 / - | 4 | Partial capture |
| 06-21 17:13 | 20m | - / -13 | R6OAO | -22 / - | 4 | ✓ Closing fragment |
| 06-21 16:53 | 20m | - / -13 | YO3AIO | -9 / - | 3 | ✓ Closing fragment |
| 06-21 15:06 | 20m | - / -21 | RA3TRR | 0 / - | 5 | ✓ Closing fragment |
| 06-11 16:41 | 40m | - / - | E72DX | +3 / - | 6 | Partial capture |
| 06-11 16:34 | 40m | - / -6 | YU9A | +7 / - | 4 | ✓ Closing fragment |
| 06-11 16:20 | 40m | - / -15 | YT6AAA | +1 / - | 14 | ✓ Closing fragment |
| 06-11 15:36 | 40m | - / - | SP1HN | +6 / - | 4 | Partial capture |
| 06-09 14:13 | 20m | - / -14 | R7MN | +18 / - | 2 | Partial capture |
| 06-09 11:56 | 20m | - / - | R4HMI | -15 / - | 3 | Partial capture |
| 06-09 11:46 | 20m | - / - | DN4TG | +2 / - | 5 | Partial capture |
| 06-09 11:40 | 20m | - / - | DN4TG | 0 / - | 2 | Partial capture |
| 06-08 19:15 | 20m | - / -14 | LZ2PC | +4 / - | 3 | ✓ Closing fragment |
| 06-08 18:10 | 40m | - / -1 | OK1EK | +19 / - | 8 | ✓ Closing fragment |
| 06-08 16:59 | 40m | - / -19 | RQ7O | -6 / - | 3 | ✓ Closing fragment |
| 06-08 16:34 | 40m | - / +7 | UA3IKI | -13 / - | 2 | Partial capture |
| 06-06 15:02 | 20m | - / - | IS0KNO | +13 / - | 3 | Partial capture |
| 06-06 14:43 | 20m | - / - | I8KRC | -1 / - | 9 | Partial capture |
| 06-06 14:42 | 20m | - / -21 | F1SAA | +6 / - | 5 | ✓ Closing fragment |
| 06-06 14:39 | 20m | - / - | IZ1RFL | -16 / - | 2 | ✓ Closing fragment |
| 06-06 14:37 | 20m | - / - | R3BGU | -15 / - | 3 | Partial capture |
| 06-06 14:24 | 20m | - / - | UA3MPA | +1 / - | 4 | Partial capture |
| 06-06 14:12 | 20m | - / -15 | RT5C | -9 / - | 3 | ✓ Closing fragment |
| 06-06 14:02 | 20m | - / -21 | RT5C | 0 / - | 7 | ✓ Closing fragment |
| 06-06 13:55 | 20m | - / -15 | RJ3F | 0 / - | 3 | ✓ Closing fragment |
| 06-06 13:52 | 20m | - / - | UA3MPA | +6 / - | 2 | Partial capture |
| 06-06 12:53 | 20m | - / - | F8NHF | -4 / - | 2 | ✓ Closing fragment |
| 06-06 12:27 | 20m | - / -17 | RZ3ZY | +4 / - | 2 | ✓ Closing fragment |
| 06-06 12:22 | 20m | - / -11 | UA0LGF | -8 / - | 3 | ✓ Closing fragment |
| 06-06 11:52 | 20m | - / - | DD1OBU | -4 / - | 3 | Partial capture |
| 06-06 11:36 | 20m | - / - | R0SAF | 0 / - | 2 | Partial capture |
| 06-04 17:44 | 80m | - / - | HB9ECS | -4 / - | 2 | Partial capture |
| 05-30 13:41 | 20m | - / - | R9WGT | -8 / - | 2 | Partial capture |
| 05-30 13:35 | 20m | - / - | R9WGT | -10 / - | 4 | Partial capture |
| 05-30 13:03 | 20m | - / - | YL3QT | -7 / - | 2 | Partial capture |
| 05-30 12:32 | 20m | - / -15 | R9MW | -4 / - | 3 | ✓ Closing fragment |
| 05-30 10:33 | 20m | - / -15 | R9UDK | -14 / - | 6 | ✓ Closing fragment |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 154215 -23 1498 C21TS R7CD KN94 162115 -16 1802 C21TS UD6AVY -19 (x2) 164600 -24 1774 C21TS UB4CGR LO21 185415 -13 2520 C21TS LZ3TA KN21 184615 -8 2655 C21TS IK0SHH R-15 (x2) 190345 +0 713 C21TS E72DX JN84 (x3) 190715 -7 971 C21TS HA8DX KN07 (x5)
UTC dB Audio Message 065830 -8 1435 C21TS RR73; US3LX <...> -12 050530 -15 2193 C21TS EB5AL IM99 (x4) 192530 -12 1251 C21TS SV1SAX KM17 (x2) 200230 -18 1415 C21TS PY2GZ GG66 (x3) 203915 -16 1720 C21TS IT9PQU JM77 204415 -1 2667 C21TS S55OO JN76 (x2) 090415 -20 2209 C21TS GM2TT -17 (x2)
UTC dB Audio Message 174400 -7 2004 C21TS HB9ECS JN37 (x2)
Decoder S/N history by band
Daily averages across messages associated with this profile as decoded at SO8OO.