PD5ZZ — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving PD5ZZ, decoded by SO8OO in southeastern Poland. 62 FT8 messages attributed to this token as transmitter, on 40m, 20m, 10m, across 13 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-07-13.
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 62 FT8 messages attributed to PD5ZZ as the transmitting token by decoded message structure across 13 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (44%), followed by 10 m (40%) and 40 m (16%). Several six-hour UTC windows tied for the largest share (71%), so no unique busiest interval is claimed. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -10 dB.
Overview
Bands
Last attributed message: 2026-07-13 17:59 UTC
Observed FT8 message patterns
- Attributed sample
- 62 messages
- Active dates
- 13 UTC dates
- Estimated median S/N
- -10 dB
- Estimated 10th-90th percentile
- -20 to 0 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 22, moderate (-15 to -9 dB) 14, strong (≥ -8 dB) 26.
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 PD5ZZ 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 PD5ZZ
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
- JO22 · 39 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 1,201 km (approx.)
- Last such locator decoded
- 2026-07-13 17:59 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 | PD5ZZ S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 07-13 17:48 | 10m | - / -1 | RN6MA | -10 / - | 3 | ✓ Closing fragment |
| 07-10 17:07 | 20m | - / -18 | 9K2YM | -4 / - | 2 | ✓ Closing fragment |
| 07-08 10:36 | 10m | - / -7 | UR4QWW | -1 / - | 2 | ✓ Closing fragment |
| 06-30 09:28 | 10m | -20 / - | 8A1WWA | - / - | 2 | Partial capture |
| 06-29 20:40 | 20m | -3 / - | DK7ZT | - / - | 2 | ✓ Closing fragment |
| 06-29 20:38 | 20m | -8 / - | PY1NS | - / -20 | 2 | ✓ Closing fragment |
| 06-29 20:35 | 20m | -7 / - | TJ1GD/P | - / - | 3 | Partial capture |
| 06-29 07:17 | 10m | -18 / -18 | 5Z4VJ | -15 / - | 2 | Partial capture |
| 06-28 20:14 | 40m | - / -9 | RU6CH | -8 / - | 4 | ✓ Closing fragment |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 203430 -4 1210 WB9DNZ PD5ZZ JO22 203545 -10 1210 TJ1GD/P PD5ZZ JO22 (x3) 203800 -8 670 PY1NS PD5ZZ R-20 (x2) 204000 +3 669 DK7ZT PD5ZZ R+21 (x2) 204315 +2 670 BD1TX PD5ZZ JO22 142900 -24 1525 RL2F PD5ZZ 73 170730 -6 592 PD5ZZ 9K2YM -18 (x2) 175900 -20 1428 9H5BM PD5ZZ JO22
UTC dB Audio Message 071730 -18 1230 5Z4VJ PD5ZZ JO22 071845 -15 882 PD5ZZ 5Z4VJ -18 202630 -13 1229 LA6JEA PD5ZZ R-04 092815 -21 1144 8A1WWA PD5ZZ JO22 (x2) 093600 -16 1144 YT1MP PD5ZZ JO22 103600 -2 1870 PD5ZZ UR4QWW R-07 (x2) 174800 -7 2045 PD5ZZ RN6MA -01 (x3)
UTC dB Audio Message 201345 -19 1171 CQ PD5ZZ JO22 201415 -18 1171 F1IQH PD5ZZ -02 201430 -11 710 PD5ZZ RU6CH KN85 (x2) 201515 -19 1171 M6OTN PD5ZZ RR73 201600 -6 710 PD5ZZ RU6CH R-17 (x2) 142115 -6 2796 PD5ZZ IQ4JO JN63 143630 -18 2315 PD5ZZ OZ9FF RR73
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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