Z35WTF — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving Z35WTF, decoded by SO8OO in southeastern Poland. 157 FT8 messages attributed to this token as transmitter, on 20m, across 2 UTC dates in the available aggregate history. Observed between 2026-06-07 and 2026-06-20.
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 157 FT8 messages attributed to Z35WTF as the transmitting token by decoded message structure across 2 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (100%). In this small sample, the estimated median decoder S/N was -11 dB; no usual signal pattern is inferred.
Overview
Observed FT8 message patterns
- Attributed sample
- 157 messages
- Active dates
- 2 UTC dates
- Estimated median S/N
- -11 dB
- Estimated 10th-90th percentile
- -16 to -5 dB
- Recurring-pattern threshold
- Not met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 22, moderate (-15 to -9 dB) 91, strong (≥ -8 dB) 44.
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. The sample does not meet the threshold for a recurring time or signal-pattern claim (20 attributed messages, three UTC dates and five distinct 15-minute windows).
Frequent counterpart tokens observed at SO8OO
Tokens most often paired with Z35WTF in decoded directed-looking exchanges:
Most frequent locator attributed to Z35WTF
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
- KN01 · 108 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 940 km (approx.)
- Last such locator decoded
- 2026-06-20 12:41 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 | Z35WTF S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 08-16 14:55 | 20m | - / - | F1PPH | -24 / - | 2 | Partial capture |
| 08-16 14:55 | 20m | - / -20 | PD4DX | -20 / - | 3 | ✓ Closing fragment |
| 08-16 14:27 | 20m | - / -12 | F5URG | +2 / - | 3 | ✓ Closing fragment |
| 08-16 14:22 | 20m | - / -20 | PD0DEX | -12 / - | 4 | ✓ Closing fragment |
| 08-16 14:05 | 20m | - / - | UR5FS | -16 / - | 2 | Partial capture |
| 08-16 13:19 | 20m | - / -14 | DM6LO | 0 / - | 4 | Partial capture |
| 08-16 13:16 | 20m | - / -14 | DM6LO | -4 / - | 2 | Partial capture |
| 08-16 13:10 | 20m | - / -13 | 4X1YA | -15 / - | 2 | ✓ Closing fragment |
| 08-16 13:04 | 20m | - / -18 | IU1DXU | -17 / - | 4 | ✓ Closing fragment |
| 08-16 12:53 | 20m | - / -17 | I4KYO | -15 / - | 5 | Partial capture |
| 08-16 12:45 | 20m | - / - | DL1RAZ | -16 / - | 7 | Partial capture |
| 08-16 12:17 | 20m | - / -8 | YU7DES | -13 / - | 3 | ✓ Closing fragment |
| 08-16 11:55 | 20m | - / -13 | RN3DN | -9 / - | 2 | ✓ Closing fragment |
| 08-16 10:46 | 20m | - / - | OK1DBE | -6 / - | 3 | Partial capture |
| 08-16 10:40 | 20m | - / -21 | HB9SFL | -18 / - | 2 | Partial capture |
| 08-16 10:34 | 20m | - / -15 | RA3Y | -13 / - | 3 | Partial capture |
| 08-16 10:29 | 20m | - / - | OM1AMT | -2 / - | 2 | Partial capture |
| 08-16 10:24 | 20m | - / -20 | IU3MAG | -10 / - | 2 | ✓ Closing fragment |
| 08-16 10:14 | 20m | - / -8 | IK8MID | -8 / - | 2 | Partial capture |
| 08-16 10:14 | 20m | - / -15 | PD8MD | +1 / - | 9 | ✓ Closing fragment |
| 08-16 10:09 | 20m | - / 0 | IU3MAG | 0 / - | 2 | Partial capture |
| 08-16 10:00 | 20m | - / -10 | TM0BSM | -20 / - | 2 | ✓ Closing fragment |
| 08-16 09:52 | 20m | - / -18 | DL6FKR | -2 / - | 3 | Partial capture |
| 08-16 09:50 | 20m | - / +4 | IU5HIU | -12 / - | 2 | ✓ Closing fragment |
| 08-16 09:45 | 20m | - / -12 | IU3MAG | -12 / - | 2 | Partial capture |
| 08-16 09:37 | 20m | - / - | IU5HIU | -5 / - | 2 | Partial capture |
| 07-12 09:05 | 20m | - / -20 | DK8IF | -8 / - | 2 | ✓ Closing fragment |
| 07-12 08:48 | 20m | - / -8 | PG4AS | -12 / - | 2 | Partial capture |
| 07-12 08:40 | 20m | - / -3 | IK4LZH | +3 / - | 2 | ✓ Closing fragment |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 140615 -16 1659 Z35WTF UR5FS KN56 142215 -5 1650 Z35WTF PD0DEX JO32 (x4) 142715 -15 870 Z35WTF UA3ZMQ RR73 142715 +5 2875 Z35WTF F5URG -12 (x3) 143245 -22 1651 Z35WTF DK3HV JO31 145515 -18 1692 Z35WTF PD4DX JO33 145545 -23 1648 Z35WTF F1PPH JN07 145615 -22 1692 Z35WTF PD4DX R-20 (x2) 145645 -24 1647 Z35WTF F1PPH JN07
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