GM4SUF — reception at SO8OO
Signals decoded by SO8OO in southeastern Poland. FT8 and CW have separate histories; all times are UTC.
FT8 activity
Receiver-side FT8 activity involving GM4SUF, decoded by SO8OO in southeastern Poland. 66 FT8 messages attributed to this token as transmitter, on 40m, 20m, 10m, across 9 UTC dates in the available aggregate history. Observed between 2026-06-11 and 2026-11-03.
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 66 FT8 messages attributed to GM4SUF as the transmitting token by decoded message structure across 9 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (77%), followed by 40 m (15%) and 10 m (8%). Most decodes (95%) fell within the six-hour window 12:00-18:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's weak S/N range (61%); the estimated median was -17 dB.
Overview
Bands
Last attributed message: 2026-11-03 17:20 UTC
Observed FT8 message patterns
- Attributed sample
- 66 messages
- Active dates
- 9 UTC dates
- Estimated median S/N
- -17 dB
- Estimated 10th-90th percentile
- -23 to -8 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 40, moderate (-15 to -9 dB) 18, strong (≥ -8 dB) 8.
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 GM4SUF in decoded directed-looking exchanges:
Most frequent locator attributed to GM4SUF
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
- IO77 · 31 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 1,936 km (approx.)
- Last such locator decoded
- 2026-11-03 17:20 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 | GM4SUF S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 11-03 17:20 | 40m | - / - | E70SZ | -15 / - | 3 | Partial capture |
| 11-03 17:09 | 40m | -16 / - | RM4N | - / 0 | 2 | Partial capture |
| 11-03 17:08 | 40m | - / - | UB6LWX | -16 / - | 2 | Partial capture |
| 11-03 17:03 | 40m | -14 / - | EW4DX | - / 0 | 2 | ✓ Closing fragment |
| 11-03 17:01 | 40m | - / +7 | OE8PIT | -2 / - | 2 | Partial capture |
| 08-23 15:10 | 10m | - / -21 | EA3EDU | -2 / - | 7 | ✓ Closing fragment |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 170345 -14 1392 EW4DX GM4SUF +00 (x2) 170500 -21 1493 GM4SUF SV5BYP -06 170545 -15 1392 UB3BHW GM4SUF -13 (x2) 170830 -14 2417 GM4SUF UB6LWX KN97 170945 -18 1164 RM4N GM4SUF R+00 171000 -17 2417 GM4SUF UB6LWX KN97 171015 -15 1165 RM4N GM4SUF R+00 171815 -11 1165 OE3RWR GM4SUF -13 172000 -7 1165 GM4SUF OE5DML JN78 172015 -18 1165 CQ GM4SUF IO77 172030 -11 1166 GM4SUF E70SZ JN84 (x3)
UTC dB Audio Message 151030 -5 697 GM4SUF EA3EDU JN01 (x7)
CW
No CW receptions recorded for this callsign in the last 30 days.
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