Z31CZ — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving Z31CZ, decoded by SO8OO in southeastern Poland. 347 related FT8 messages, 17 CQ messages, observed on 40m, 20m, 10m, across 42 UTC dates. Heard between 2026-05-26 and 2026-08-24.
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 Z31CZ worked most often, as logged from our receiver:
Activity Heatmap
Locator transmitted by Z31CZ
Approximate centre of KN02, decoded 2026-08-21 20:46 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 | Z31CZ S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 08-24 03:50 | 40m | - / - | OH1LA | -14 / - | 2 | Partial capture |
| 08-21 20:44 | 20m | -13 / - | FG4AO | - / - | 3 | Partial capture |
| 08-21 20:41 | 20m | -12 / - | FG4AO | - / - | 2 | Partial capture |
| 08-21 04:01 | 40m | -21 / -8 | OJ0JR | +4 / -16 | 8 | Partial capture |
| 08-19 19:59 | 40m | -16 / - | RW3DDZ | -9 / -13 | 3 | ✓ Closing observed |
| 08-19 19:58 | 40m | - / - | PD0RCQ | -12 / - | 3 | Partial capture |
| 08-19 00:44 | 40m | - / +4 | V26K | -2 / - | 2 | ✓ Closing fragment |
| 08-18 18:46 | 40m | -12 / - | <...> | - / - | 3 | Partial capture |
| 08-12 03:20 | 40m | - / - | RQ3M | -23 / - | 3 | Partial capture |
| 08-09 17:41 | 20m | -7 / - | 7X2KF | - / - | 4 | Partial capture |
| 08-09 17:35 | 20m | -8 / - | 4L7T | -8 / -2 | 7 | ✓ Closing observed |
| 08-05 16:49 | 20m | - / -17 | R1QD | -22 / - | 5 | Partial capture |
| 08-04 17:45 | 40m | - / -10 | OE3DXA | +3 / - | 4 | Partial capture |
| 08-04 17:43 | 40m | - / - | DH2RL | -7 / - | 3 | Partial capture |
| 08-04 17:43 | 40m | - / 0 | RW3QW | -2 / - | 2 | Partial capture |
| 07-31 21:30 | 40m | -8 / - | ZS1J | - / -14 | 4 | Partial capture |
| 07-31 21:09 | 40m | -8 / - | ZS1J | - / - | 3 | Partial capture |
| 07-31 20:46 | 40m | -10 / - | VK4DAD | - / - | 2 | Partial capture |
| 07-19 20:24 | 20m | -18 / - | <...> | - / - | 6 | Partial capture |
| 07-17 16:42 | 20m | -14 / - | 4S6ARW | - / - | 6 | Partial capture |
| 07-17 15:23 | 20m | -20 / - | BH8PSM | - / -21 | 2 | ✓ Closing fragment |
| 07-17 15:20 | 20m | -19 / - | YI1SAL | - / - | 2 | Partial capture |
| 07-15 18:39 | 40m | - / - | SP8DK | -13 / - | 4 | Partial capture |
| 07-15 18:37 | 40m | -8 / - | RN3YN | -12 / - | 4 | ✓ Closing observed |
| 07-15 18:36 | 40m | - / -18 | DL6TK | -3 / - | 5 | Partial capture |
| 07-15 18:36 | 40m | - / - | SP8DK | -14 / - | 2 | Partial capture |
| 07-15 18:24 | 20m | -11 / - | S09S | - / - | 6 | Partial capture |
| 07-15 18:06 | 20m | - / - | RT3D | -12 / - | 3 | Partial capture |
| 07-15 17:56 | 20m | -14 / - | S09S | - / - | 2 | Partial capture |
| 07-15 17:48 | 20m | - / -15 | TA7AL | -13 / - | 3 | Partial capture |
| 07-15 17:30 | 20m | -18 / - | S09S | - / - | 5 | Partial capture |
| 07-15 17:26 | 20m | -16 / - | ZC4RH | - / - | 4 | Partial capture |
| 07-15 17:21 | 20m | -20 / - | ZC4RH | - / -19 | 4 | Partial capture |
| 07-15 17:14 | 20m | -13 / - | ZC4RH | - / -19 | 2 | Partial capture |
| 07-15 16:40 | 20m | -11 / - | SV2FPG | - / - | 2 | Partial capture |
| 07-15 16:39 | 20m | -19 / +3 | TA3V | -7 / +2 | 4 | Partial capture |
| 07-15 16:31 | 20m | -17 / - | OH0KCE | - / - | 11 | Partial capture |
| 07-13 15:01 | 20m | -16 / - | R1AV | - / +1 | 2 | ✓ Closing fragment |
| 07-13 14:59 | 20m | -20 / - | 8J3O/P | - / -12 | 2 | ✓ Closing fragment |
| 07-13 03:18 | 40m | -16 / - | NO4J | - / -7 | 2 | ✓ Closing fragment |
| 07-13 03:16 | 40m | - / -10 | UR4UT | -9 / - | 3 | ✓ Closing fragment |
| 07-13 03:06 | 40m | -14 / - | TI2SD | - / -17 | 3 | Partial capture |
| 07-12 19:43 | 40m | -13 / - | TJ1GD/P | - / -21 | 3 | ✓ Closing fragment |
| 07-12 18:48 | 40m | - / -7 | R2SN | -14 / - | 2 | Partial capture |
| 07-12 18:43 | 40m | -12 / - | R2FDU | - / - | 2 | ✓ Closing fragment |
| 07-12 18:02 | 40m | -6 / - | VU3OSA | - / - | 4 | Partial capture |
| 07-07 02:33 | 40m | - / - | OK1WCF | -6 / - | 2 | Partial capture |
| 07-06 16:58 | 40m | - / - | OK1JAZ | -14 / - | 2 | Partial capture |
| 07-02 17:54 | 40m | -18 / - | RL2F | - / -14 | 4 | Partial capture |
| 06-29 20:06 | 40m | - / +1 | RA6AR | -18 / - | 3 | Partial capture |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 200000 -19 1532 Z31CZ PD0LBY JO22 200000 -9 2704 Z31CZ RW3DDZ 73 040115 -20 1909 OJ0JR Z31CZ KN02 (x6) 040400 +4 393 Z31CZ OJ0JR -08 040415 -22 1907 OJ0JR Z31CZ R-16 040430 +1 393 Z31CZ RR73; UA1AIR <...> -04 040445 -20 1907 CQ Z31CZ KN02 035000 -14 1557 Z31CZ OH1LA KP01 (x2) 035100 -19 1556 Z31CZ DH5BM R-06
UTC dB Audio Message 173715 -8 334 Z31CZ 4L7T RR73 173730 -6 1055 4L7T Z31CZ R-02 173745 -8 334 Z31CZ 4L7T RR73 174100 -7 1055 7X2KF Z31CZ KN02 (x4) 170145 -22 1144 9J2MM Z31CZ KN02 (x2) 204130 -12 1790 FG4AO Z31CZ KN02 (x5) 213100 +3 869 Z31CZ AH2O RR73
UTC dB Audio Message 174245 -3 2678 Z31CZ PD0HLA -18 174330 -22 1539 PD0HLA Z31CZ R+03 174345 -3 1837 Z31CZ PF1H JO21 174400 -16 1538 PD0HLA Z31CZ R+03 174415 +0 1837 Z31CZ PF1H JO21 174430 -22 1537 SQ8GBG Z31CZ -04 174445 -20 1208 Z31CZ SQ8GBG R-20 174545 -3 1838 Z31CZ PF1H JO21 (x4) 175045 -4 1362 Z31CZ IK1JMJ JN35 175430 +0 2088 Z31CZ ON7EH JO20 175800 -8 1868 Z31CZ DN9SIB JN49 (x2)
Decoder S/N history by band
Daily averages across messages associated with this profile as decoded at SO8OO.