OK8CZ — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving OK8CZ, decoded by SO8OO in southeastern Poland. 853 FT8 messages attributed to this token as transmitter, on 40m, across 33 UTC dates in the available aggregate history. Observed between 2026-08-25 and 2026-10-09.
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.
SO8OO decoded 853 FT8 messages attributed to OK8CZ as the transmitting token by decoded message structure across 33 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (100%). The busiest six-hour window was 07:00-13:00 UTC, containing 48% of decodes. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -13 dB.
Overview
Observed FT8 message patterns
- Attributed sample
- 853 messages
- Active dates
- 33 UTC dates
- Estimated median S/N
- -13 dB
- Estimated 10th-90th percentile
- -20 to -2.9 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 314, moderate (-15 to -9 dB) 308, strong (≥ -8 dB) 231.
WSJT-X defines S/N reports against a 2,500 Hz reference noise bandwidth. The ranges above are SO8OO receiver-side display categories, not official WSJT-X classes, transmitter-power measurements or estimates of how easy the station is to hear elsewhere. Statistics include only successful decodes on SO8OO's monitored FT8 channels; transmissions that were not decoded are absent.
Frequent counterpart tokens observed at SO8OO
Tokens most often paired with OK8CZ in decoded directed-looking exchanges:
Attributed messages by UTC hour
Rolling 90-day UTC chart window. Counts follow decoded message structure: the first token for CQ, or the second token in a directed-looking message.
Most frequent locator attributed to OK8CZ
The map compares the centres and boundaries of the locator field attributed to this token by decoded message structure, 2° × 1° as a Maidenhead square, and SO8OO's six-character receiver square. The separation is not an exact antenna-to-antenna distance or a radio-path length.
- Attributed locator
- JN89 · 465 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 348 km (approx.)
- Last such locator decoded
- 2026-10-09 09:17 UTC
A decoded locator can describe portable, remote or special-event operation and is not proof of a permanent station address or transmitter identity.
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 | OK8CZ S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 10-10 18:27 | 40m | - / -24 | SV1GYG | -18 / - | 2 | ✓ Closing fragment |
| 10-10 16:16 | 40m | - / -10 | DM3BN | -4 / - | 5 | ✓ Closing fragment |
| 10-10 16:16 | 40m | - / - | EA3HMM | -4 / - | 4 | Partial capture |
| 10-09 18:06 | 40m | - / -4 | DL8TV | +3 / - | 3 | ✓ Closing fragment |
| 10-09 09:15 | 40m | -18 / - | IU2BZV | - / - | 4 | Partial capture |
| 10-09 09:13 | 40m | -22 / - | PD4RJ | - / - | 2 | Partial capture |
| 10-09 09:03 | 40m | -16 / - | DG5YHK | - / - | 2 | Partial capture |
| 10-09 09:03 | 40m | -18 / -20 | DG6TOM | -13 / - | 7 | ✓ Closing observed |
| 10-09 09:01 | 40m | -16 / -6 | 9A5AZK | -12 / -17 | 4 | ✓ Full exchange observed |
| 10-08 16:19 | 40m | - / -25 | YT2ZE | -10 / - | 2 | Partial capture |
| 10-08 16:13 | 40m | - / -4 | E74K | -9 / - | 4 | Partial capture |
| 10-08 16:08 | 40m | -11 / - | SP4BB | - / - | 2 | Partial capture |
| 10-08 16:06 | 40m | - / - | DL8TV | +1 / - | 4 | Partial capture |
| 10-08 16:05 | 40m | -9 / -12 | YO3KWJ | +2 / -5 | 5 | ✓ Full exchange observed |
| 10-08 15:46 | 40m | -17 / -9 | DK5DW | -7 / -8 | 5 | ✓ Full exchange observed |
| 10-08 10:26 | 40m | -22 / - | UR5WF | - / - | 2 | Partial capture |
| 10-08 10:14 | 40m | -21 / -17 | II5GG | -21 / - | 7 | ✓ Full exchange observed |
| 10-07 05:59 | 40m | - / -3 | DB2VS | -9 / - | 3 | ✓ Closing fragment |
| 10-07 05:58 | 40m | - / - | M8FQT | -19 / - | 5 | Partial capture |
| 10-07 05:53 | 40m | - / -19 | YL3GGT | -14 / - | 2 | Partial capture |
| 10-07 05:48 | 40m | - / -4 | F4HMP | -12 / - | 2 | ✓ Closing fragment |
| 10-07 05:47 | 40m | - / - | PE1NPS | -7 / - | 3 | Partial capture |
| 10-07 05:37 | 40m | - / -1 | GJ0KYZ | -12 / - | 2 | Partial capture |
| 10-07 05:36 | 40m | - / +1 | IU1TLG | -5 / - | 3 | ✓ Closing fragment |
| 10-07 05:35 | 40m | - / - | F1PBZ | -8 / - | 2 | Partial capture |
| 10-07 05:30 | 40m | - / - | SV1EKI | -14 / - | 3 | Partial capture |
| 10-06 19:45 | 40m | - / -23 | F5PEG | -18 / - | 2 | Partial capture |
| 10-06 19:38 | 40m | -6 / - | 7Z1IS | - / - | 2 | Partial capture |
| 10-06 19:36 | 40m | -8 / -15 | ON5GQ | +4 / +7 | 3 | ✓ Full exchange observed |
| 10-06 19:35 | 40m | -8 / - | M6WRB | - / - | 2 | Partial capture |
| 10-06 19:33 | 40m | - / - | PE1NPS | -3 / - | 3 | Partial capture |
| 10-06 19:33 | 40m | -5 / -7 | PI4DX | +10 / -2 | 5 | ✓ Full exchange observed |
| 10-06 19:31 | 40m | -3 / -9 | M0IEP | -13 / - | 4 | ✓ Closing observed |
| 10-06 19:30 | 40m | -13 / -12 | EA7CRB | -18 / - | 4 | ✓ Closing observed |
| 10-06 19:27 | 40m | -6 / - | PD4EH | - / +1 | 2 | Partial capture |
| 10-06 19:23 | 40m | -14 / - | OZ1AKN | - / 0 | 2 | Partial capture |
| 10-06 17:13 | 40m | - / -14 | DL1SWB | -8 / - | 3 | ✓ Closing fragment |
| 10-06 17:12 | 40m | - / - | DB2HA | +2 / - | 2 | Partial capture |
| 10-06 17:05 | 40m | - / - | PE1NPS | -5 / - | 3 | Partial capture |
| 10-05 16:48 | 40m | -6 / - | R7PKS/P | - / -15 | 2 | Partial capture |
| 10-03 02:56 | 40m | - / - | EA1IOK | -11 / - | 5 | Partial capture |
| 10-03 02:55 | 40m | - / - | RZ4FWA | -15 / - | 3 | Partial capture |
| 10-03 02:54 | 40m | - / +7 | G3TKT | -13 / - | 3 | ✓ Closing fragment |
| 10-03 02:08 | 40m | - / -18 | M9PXZ | -7 / - | 2 | Partial capture |
| 10-03 02:07 | 40m | - / -15 | CT7AUT | -12 / - | 2 | ✓ Closing fragment |
| 10-02 11:01 | 40m | - / - | S57CT | -10 / - | 2 | Partial capture |
| 10-02 10:59 | 40m | - / -15 | DF3MT | -18 / - | 2 | ✓ Closing fragment |
| 10-02 10:51 | 40m | -22 / - | DF0NN | - / -24 | 2 | Partial capture |
| 10-02 10:47 | 40m | -22 / - | DL5PF/P | - / -3 | 2 | Partial capture |
| 10-02 10:44 | 40m | -20 / - | A61FJ | - / - | 2 | Partial capture |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 180630 +7 1724 OK8CZ DL8TV JN49 (x3) 113900 -24 1732 OK8CZ IQ8DO -06 161615 -5 394 OK8CZ EA3HMM JN00 161615 -1 1488 OK8CZ DM3BN JO60 161645 -3 394 OK8CZ EA3HMM JN00 161645 +0 1488 OK8CZ DM3BN JO60 161715 -6 394 OK8CZ EA3HMM JN00 161715 -4 1487 OK8CZ DM3BN JO60 161745 -4 394 OK8CZ EA3HMM JN00 161745 -8 1485 OK8CZ DM3BN R-10 (x2) 182730 -16 1815 OK8CZ SV1GYG R-24 (x2)
UTC dB Audio Message 154945 -11 1144 OK8CZ IU4PPL R+10 (x4) 160745 -17 2392 OK8CZ PD9FLX JO22 (x4) 091845 -10 657 OK8CZ SV2CLJ KN10 (x2) 073545 -16 2198 OK8CZ RM8L MO27 (x2) 121330 -23 1701 OK8CZ EX7CQ -14 (x2) 111345 -5 2949 OK8CZ 9J2FI -10
UTC dB Audio Message 062800 -15 1734 OK8CZ F6JON/QRP -15 124315 -11 1480 OK8CZ F1PSX R-15 (x3) 065515 +3 2182 OK8CZ F5HNQ IN98
Decoder S/N history by band
Count-weighted daily averages across messages attributed to this profiled token and successfully decoded at SO8OO, limited to the rolling 90-day UTC chart window.
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