5Z4J — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving 5Z4J, decoded by SO8OO in southeastern Poland. 13 indexed activity records, involving 20m. Last heard 2026-07-19.
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
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 | 5Z4J S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 07-19 18:05 | 20m | - / -14 | UB3KDU | -14 / - | 2 | Partial capture |
| 07-19 18:04 | 20m | - / - | DL7PBS | -4 / - | 6 | Partial capture |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 175800 -15 2017 5Z4J DH2YBG JO43 175830 -22 1318 5Z4J RA6OF KN87 180100 -21 2017 5Z4J DH2YBG JO43 180400 -12 2506 5Z4J IU5HIU JN53 180400 -8 1038 5Z4J DL7PBS JN47 180530 -13 823 5Z4J UB3KDU -14 180530 -2 1038 5Z4J DL7PBS JN47 180600 -15 824 5Z4J UB3KDU -14 180630 -2 1038 5Z4J DL7PBS JN47 (x5)
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