OK4ZL — reception at SO8OO
Signals decoded by SO8OO in southeastern Poland. FT8 and CW have separate histories; all times are UTC.
FT8 activity
Receiver-side FT8 activity involving OK4ZL, decoded by SO8OO in southeastern Poland. 87 FT8 messages attributed to this token as transmitter, on 40m, across 3 UTC dates in the available aggregate history. Observed between 2026-10-26 and 2026-10-28.
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 87 FT8 messages attributed to OK4ZL as the transmitting token by decoded message structure across 3 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (100%). Most decodes (100%) fell within the six-hour window 07:00-13:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -8 dB.
Overview
Observed FT8 message patterns
- Attributed sample
- 87 messages
- Active dates
- 3 UTC dates
- Estimated median S/N
- -8 dB
- Estimated 10th-90th percentile
- -14 to 0 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 7, moderate (-15 to -9 dB) 35, strong (≥ -8 dB) 45.
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 OK4ZL 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 OK4ZL
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
- JO70 · 60 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 487 km (approx.)
- Last such locator decoded
- 2026-10-28 10:26 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 | OK4ZL S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 10-30 21:05 | 40m | - / -20 | CU5AM | -20 / - | 2 | ✓ Closing fragment |
| 10-30 20:30 | 40m | - / - | F5PBG | -15 / - | 3 | ✓ Closing fragment |
| 10-30 20:07 | 40m | - / - | F5PBG | -18 / - | 2 | Partial capture |
| 10-30 19:57 | 40m | - / -6 | F5PBG | -14 / - | 2 | Partial capture |
| 10-30 19:02 | 40m | - / - | F5PBG | -14 / - | 2 | Partial capture |
| 10-28 18:17 | 40m | - / +6 | IS0JHQ | 0 / - | 2 | ✓ Closing fragment |
| 10-28 18:14 | 40m | - / -13 | ES3BH | -10 / - | 3 | Partial capture |
| 10-28 10:36 | 40m | -8 / - | SM7WNM | - / 0 | 3 | ✓ Closing fragment |
| 10-28 10:34 | 40m | - / - | SP3EMA | -4 / - | 2 | Partial capture |
| 10-28 10:34 | 40m | -7 / +3 | 9A4ZM | -4 / +4 | 5 | Partial capture |
| 10-28 10:33 | 40m | -10 / -3 | HA7TM | -2 / +9 | 4 | ✓ Full exchange observed |
| 10-28 10:19 | 40m | -7 / - | OK1LZI | -11 / - | 13 | Partial capture |
| 10-28 10:07 | 40m | -7 / - | OK1LZI | - / - | 2 | Partial capture |
| 10-28 08:59 | 40m | +2 / - | GJ0KYZ | - / - | 5 | Partial capture |
| 10-28 08:56 | 40m | 0 / - | GU0SUP | - / - | 7 | Partial capture |
| 10-28 08:46 | 40m | -12 / - | HB9ZHK | - / - | 3 | Partial capture |
| 10-28 08:42 | 40m | 0 / +5 | 9A4ZM | -6 / +8 | 5 | Partial capture |
| 10-28 08:36 | 40m | 0 / - | SM2OTU | - / -14 | 3 | ✓ Closing fragment |
| 10-27 19:45 | 40m | - / -3 | GJ0KYZ | +3 / - | 3 | Partial capture |
| 10-27 19:28 | 40m | - / -4 | IU0ERZ | -8 / - | 2 | Partial capture |
| 10-27 19:19 | 40m | - / -4 | IU0ERZ | -8 / - | 13 | Partial capture |
| 10-27 18:54 | 160m | - / -14 | DL8LAS | +5 / - | 15 | Partial capture |
| 10-27 08:05 | 40m | -11 / - | C31MF | - / - | 12 | Partial capture |
| 10-27 08:00 | 40m | - / - | DK7ZT | -10 / - | 2 | Partial capture |
| 10-27 07:58 | 40m | -7 / -3 | LA3BO | -17 / +9 | 5 | ✓ Full exchange observed |
| 10-27 07:55 | 40m | - / - | DJ0MAB | -11 / - | 3 | Partial capture |
| 10-27 07:55 | 40m | - / - | SP6AXW | -17 / - | 5 | Partial capture |
| 10-27 07:53 | 40m | -9 / - | RX3ASQ | - / -17 | 3 | ✓ Closing fragment |
| 10-27 07:49 | 40m | -11 / - | MM0JTV | - / -7 | 4 | Partial capture |
| 10-27 07:45 | 40m | -6 / - | PD1DRE | - / -20 | 6 | Partial capture |
| 10-27 07:44 | 40m | -8 / - | RX3ASQ | - / - | 2 | Partial capture |
| 10-26 12:04 | 40m | -12 / - | PD4RJ | - / - | 9 | Partial capture |
| 10-26 11:58 | 40m | - / - | 9A4ZM | -14 / - | 2 | Partial capture |
| 10-26 11:57 | 40m | -20 / - | F4HQB | - / +9 | 2 | ✓ Closing fragment |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 181745 +2 2282 OK4ZL IS0JHQ RR73 185000 -4 2180 OK4ZL F4MGP JN04 190230 -15 1833 OK4ZL F5PBG IN78 (x6) 202015 -12 1460 OK4ZL UX0CZ RR73 203000 -17 1584 OK4ZL F5PBG IN78 203030 -21 1835 OK4ZL UR9QQ KN77 203030 -12 1584 OK4ZL F5PBG IN78 (x2) 210530 -19 1433 OK4ZL CU5AM -20 (x2)
UTC dB Audio Message 185430 +5 1263 OK4ZL DL8LAS -14 (x15)
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.
CW
No CW receptions recorded for this callsign in the last 30 days.
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