Z21ML — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving Z21ML, decoded by SO8OO in southeastern Poland. 532 indexed activity records, involving 160m, 40m, 20m, 10m. Heard between 2026-06-28 and 2026-09-16.
These are automated observations at the SO8OO receiver, not an official contact log. Times are UTC. Attribution follows decoded FT8 message structure: CQ uses the first token and directed-looking messages use the second. Free text that resembles a directed message can be attributed imperfectly. Summary S/N reflects propagation plus SO8OO receiver, antenna and local-noise conditions. Counts are not adjusted for monitoring outages; transmissions that were not decoded are absent. Inferred entity and location data may be inaccurate for portable, remote or special-event operation.
Overview
Bands
Last indexed activity: 2026-09-16 04:31 UTC
Frequent counterpart tokens observed at SO8OO
Tokens most often paired with Z21ML in decoded directed-looking exchanges:
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 | Z21ML S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 09-16 04:29 | 40m | - / - | K0BBC | -6 / - | 4 | Partial capture |
| 09-11 04:26 | 40m | - / - | EA5D | -19 / - | 2 | Partial capture |
| 09-11 04:25 | 40m | - / - | F4BYA | +6 / - | 3 | Partial capture |
| 09-11 03:58 | 40m | - / - | F4BYA | -3 / - | 4 | Partial capture |
| 09-11 03:37 | 40m | - / - | OH4SS | 0 / - | 3 | Partial capture |
| 09-11 03:12 | 40m | - / -24 | R6ZB | -1 / - | 3 | Partial capture |
| 09-11 02:59 | 40m | - / -19 | UT7EV | -12 / - | 2 | ✓ Closing fragment |
| 09-11 02:50 | 160m | - / - | SP6MAA | +8 / - | 5 | Partial capture |
| 09-11 02:40 | 40m | - / - | UA6AKW | -2 / - | 5 | Partial capture |
| 09-01 04:50 | 40m | - / - | N2ZA | -17 / - | 3 | Partial capture |
| 08-31 17:45 | 20m | - / - | 9A3AUH | +2 / - | 3 | Partial capture |
| 08-31 17:34 | 20m | - / -20 | PC1Y | +18 / - | 20 | Partial capture |
| 08-31 16:46 | 20m | - / - | DL6MRS | -2 / - | 2 | Partial capture |
| 08-31 16:46 | 20m | - / - | EA3HYJ | -9 / - | 2 | Partial capture |
| 08-31 16:41 | 20m | - / - | 5B4AHO | -8 / - | 12 | Partial capture |
| 08-31 16:41 | 20m | - / - | RD9M/3 | +10 / - | 5 | Partial capture |
| 08-31 16:39 | 20m | - / -25 | RL3T | +3 / - | 5 | Partial capture |
| 08-31 16:31 | 20m | - / -20 | R8CGT | -8 / - | 2 | Partial capture |
| 08-31 05:31 | 20m | - / +2 | IT9JNR | -7 / - | 5 | Partial capture |
| 08-31 05:08 | 20m | - / - | IU1TKT | -4 / - | 11 | Partial capture |
| 08-30 17:08 | 20m | - / - | DA1MHH | -4 / - | 7 | Partial capture |
| 08-30 17:06 | 20m | - / - | ES5NC | -7 / - | 3 | ✓ Closing fragment |
| 08-30 17:03 | 20m | - / - | RA9UU | +3 / - | 2 | ✓ Closing fragment |
| 08-30 16:59 | 20m | - / -18 | IU2SLI | -8 / - | 4 | Partial capture |
| 08-29 05:55 | 20m | - / - | VK3BOY | -8 / - | 3 | Partial capture |
| 08-29 05:02 | 40m | - / -22 | W1MLT | -12 / - | 2 | ✓ Closing fragment |
| 08-29 04:49 | 40m | - / -15 | CE8EIO | -19 / - | 5 | Partial capture |
| 08-27 16:10 | 20m | - / - | F1UGD | +11 / - | 23 | Partial capture |
| 08-27 16:10 | 20m | - / - | 9A5R | -18 / - | 2 | ✓ Closing fragment |
| 08-27 16:08 | 20m | - / -16 | R4AC | +5 / - | 2 | ✓ Closing fragment |
| 08-27 16:07 | 20m | - / - | F1UGD | +11 / - | 2 | Partial capture |
| 08-27 16:04 | 20m | - / -20 | A61FJ | -6 / - | 2 | ✓ Closing fragment |
| 08-27 16:00 | 20m | - / - | 4X1PF | -2 / - | 5 | Partial capture |
| 08-27 05:23 | 20m | - / - | K0FA | -1 / - | 9 | Partial capture |
| 08-27 04:40 | 20m | - / -12 | W9IRL | -10 / - | 3 | ✓ Closing fragment |
| 08-27 04:37 | 20m | - / -16 | WB6JJJ | -10 / - | 2 | ✓ Closing fragment |
| 08-25 15:54 | 20m | - / -21 | RC6OU | -16 / - | 3 | ✓ Closing fragment |
| 08-25 14:28 | 20m | - / -18 | JH7RTQ | -15 / - | 2 | Partial capture |
| 08-24 05:56 | 20m | - / - | I4JLF | -9 / - | 4 | Partial capture |
| 08-24 05:53 | 20m | - / - | I4JLF | -14 / - | 2 | Partial capture |
| 08-24 05:40 | 20m | - / -19 | EA4EQ | -10 / - | 2 | Partial capture |
| 08-24 04:50 | 20m | - / -12 | AA9JC | -13 / - | 5 | Partial capture |
| 08-24 04:44 | 20m | - / -12 | AA9JC | -12 / - | 5 | Partial capture |
| 08-23 18:15 | 20m | - / - | IU1JFI | +1 / - | 5 | Partial capture |
| 08-23 18:04 | 20m | - / -14 | LB0EI | +22 / - | 6 | Partial capture |
| 08-23 18:04 | 20m | - / -19 | SM2LIY | +12 / - | 4 | ✓ Closing fragment |
| 08-23 17:45 | 20m | - / -15 | 7Z1BM | -3 / - | 3 | ✓ Closing fragment |
| 08-23 17:45 | 20m | - / -20 | ON4AOI | +16 / - | 2 | ✓ Closing fragment |
| 08-23 17:41 | 20m | - / -18 | F5CUN | +1 / - | 7 | ✓ Closing fragment |
| 08-23 17:35 | 20m | - / -18 | F6BHK | -3 / - | 5 | Partial capture |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 033745 -1 2039 Z21ML OH4SS KP21 (x2) 035800 -5 2882 Z21ML F4BYA JN19 (x6) 042600 -19 2285 Z21ML EA5D JN00 042630 +9 2882 Z21ML F4BYA JN19 042800 -19 2284 Z21ML EA5D JN00 042915 -10 2379 Z21ML K0BBC EM73 (x4)
UTC dB Audio Message 025045 +3 1513 Z21ML SP6MAA JO90 (x5)
UTC dB Audio Message 135745 -6 1041 Z21ML UA6HBJ LN04 (x3) 155845 -20 1789 Z21ML UA6CEY 73
UTC dB Audio Message 173815 +17 444 Z21ML PC1Y R-20 (x12) 174515 +1 2639 Z21ML 9A3AUH JN75 (x3)
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