G4PDF — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving G4PDF, decoded by SO8OO in southeastern Poland. 5 FT8 messages attributed to this token as transmitter, on 80m, 40m, across 2 UTC dates in the available aggregate history. Observed between 2026-06-22 and 2026-07-06.
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 5 FT8 messages attributed to G4PDF as the transmitting token by decoded message structure across 2 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (80%), followed by 40 m (20%). In this small sample, the estimated median decoder S/N was -17 dB; no usual signal pattern is inferred.
Overview
Bands
Last attributed message: 2026-07-06 19:29 UTC
Observed FT8 message patterns
- Attributed sample
- 5 messages
- Active dates
- 2 UTC dates
- Estimated median S/N
- -17 dB
- S/N percentile sample
- Too small
- Recurring-pattern threshold
- Not met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 3, moderate (-15 to -9 dB) 2, strong (≥ -8 dB) 0.
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 G4PDF in decoded directed-looking exchanges:
Most frequent locator attributed to G4PDF
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
- IO93 · 3 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 1,612 km (approx.)
- Last such locator decoded
- 2026-07-06 19:29 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 | G4PDF S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 09-18 14:12 | 40m | - / -4 | HB9ELE | 0 / - | 3 | Partial capture |
| 07-14 19:47 | 40m | - / -6 | G4IFX | -3 / - | 2 | ✓ Closing fragment |
| 07-09 09:26 | 40m | - / -20 | <...> | -16 / - | 4 | Partial capture |
| 07-09 09:23 | 40m | - / -20 | LY100RADIO | -16 / - | 3 | Partial capture |
| 07-06 11:45 | 20m | - / -15 | UR4QWW | -10 / - | 9 | ✓ Closing fragment |
| 07-06 11:44 | 20m | - / - | F5RRS | -4 / - | 3 | ✓ Closing fragment |
| 06-22 20:57 | 40m | -15 / - | SP7TF | -14 / +4 | 2 | ✓ Closing observed |
| 06-22 20:38 | 80m | -15 / - | <...> | - / +5 | 2 | Partial capture |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 092330 -15 1308 G4PDF LY100RADIO -20 (x3) 092600 -18 1308 G4PDF <...> -20 (x4) 192930 -14 1276 G4PDF OL900CO -16 193200 -12 1934 G4PDF YO9PH -16 194745 -2 2507 G4PDF G4IFX -06 (x2) 204430 -9 683 G4PDF M0GLT -02 141230 +1 738 G4PDF HB9ELE -04 (x3)
UTC dB Audio Message 203845 -19 1607 <...> G4PDF IO93 203900 -24 1080 G4PDF GB1500M +09 203915 -11 1607 <...> G4PDF R+05 204200 -17 1607 G0PPP G4PDF IO93 192915 -18 2304 <...> G4PDF IO93
UTC dB Audio Message 114400 -4 778 G4PDF F5RRS JN36 (x2) 114530 -11 1871 G4PDF UR4QWW KN77 114530 -5 778 G4PDF F5RRS 73 114600 -11 1873 G4PDF UR4QWW KN77 (x8)
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