GE4SDZ — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving GE4SDZ, decoded by SO8OO in southeastern Poland. 9 FT8 messages attributed to this token as transmitter, on 60m, across 1 UTC dates in the available aggregate history. Last observed 2026-09-07.
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 9 FT8 messages attributed to GE4SDZ as the transmitting token by decoded message structure across 1 UTC dates in the available aggregate history. The largest monitored-band total was 60 m (100%). In this small sample, the estimated median decoder S/N was -13 dB; no usual signal pattern is inferred.
Overview
Observed FT8 message patterns
- Attributed sample
- 9 messages
- Active dates
- 1 UTC dates
- Estimated median S/N
- -13 dB
- S/N percentile sample
- Too small
- Recurring-pattern threshold
- Not met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 0, moderate (-15 to -9 dB) 9, 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 GE4SDZ in decoded directed-looking exchanges:
Most frequent locator attributed to GE4SDZ
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
- IO92 · 4 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 1,606 km (approx.)
- Last such locator decoded
- 2026-09-07 22:49 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 | GE4SDZ S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 09-07 22:50 | 60m | - / - | F5MYK | -12 / - | 2 | Partial capture |
| 09-07 22:49 | 60m | -12 / -16 | 7X5CY | -6 / -10 | 5 | ✓ Full exchange observed |
| 09-07 22:42 | 80m | - / - | DO8JB | -2 / - | 10 | Partial capture |
| 09-07 22:40 | 80m | - / - | DK7UY | -1 / - | 2 | Partial capture |
| 09-07 22:40 | 80m | - / -20 | PA3KUS | -4 / - | 6 | ✓ Closing fragment |
| 09-07 22:30 | 60m | -14 / -18 | VE1YX | -8 / -15 | 5 | ✓ Full exchange observed |
| 09-07 22:23 | 60m | - / - | OR0A | -4 / - | 9 | Partial capture |
| 09-07 22:22 | 60m | - / - | F5MYK | -8 / - | 2 | Partial capture |
| 09-07 22:20 | 60m | -10 / +5 | LA1HW | -11 / -11 | 5 | ✓ Full exchange observed |
| 08-19 13:52 | 10m | - / -2 | IK4LZH | -10 / - | 2 | ✓ Closing fragment |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 222630 -2 1102 GE4SDZ OR0A JO20 (x2) 223045 -15 938 VE1YX GE4SDZ IO92 223100 -8 1197 GE4SDZ VE1YX -18 223115 -13 938 VE1YX GE4SDZ R-15 223130 -8 1197 GE4SDZ VE1YX RR73 223145 -13 938 VE1YX GE4SDZ 73 223245 -15 937 7X5CY GE4SDZ IO92 (x2) 224930 -6 461 GE4SDZ 7X5CY -16 224945 -12 953 7X5CY GE4SDZ R-10 225000 -7 462 GE4SDZ 7X5CY RR73 225015 -11 953 7X5CY GE4SDZ 73 225030 -11 2268 GE4SDZ F5MYK IN97 (x2)
UTC dB Audio Message 224115 +1 931 GE4SDZ DK7UY JO44 224145 -6 695 GE4SDZ PA3KUS JO21 (x3) 224245 -4 931 GE4SDZ DO8JB JO32 224315 +1 695 GE4SDZ PA3KUS 73 224315 +0 931 GE4SDZ DO8JB JO32 (x9)
UTC dB Audio Message 135215 -7 491 GE4SDZ IK4LZH -02 (x2)
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