EX8MEM — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving EX8MEM, decoded by SO8OO in southeastern Poland. 19 FT8 messages attributed to this token as transmitter, on 10m, across 3 UTC dates in the available aggregate history. Observed between 2026-08-28 and 2026-09-18.
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 19 FT8 messages attributed to EX8MEM as the transmitting token by decoded message structure across 3 UTC dates in the available aggregate history. The largest monitored-band total was 10 m (100%). In this small sample, the estimated median decoder S/N was -21 dB; no usual signal pattern is inferred.
Overview
Observed FT8 message patterns
- Attributed sample
- 19 messages
- Active dates
- 3 UTC dates
- Estimated median S/N
- -21 dB
- S/N percentile sample
- Too small
- Recurring-pattern threshold
- Not met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 19, moderate (-15 to -9 dB) 0, 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 EX8MEM in decoded directed-looking exchanges:
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 | EX8MEM S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 09-18 09:37 | 10m | -21 / - | IZ4DYU | - / -9 | 2 | ✓ Closing fragment |
| 09-18 09:34 | 10m | -23 / - | HB9ACA | - / - | 2 | ✓ Closing fragment |
| 09-02 09:39 | 10m | - / - | IU5BJS | +3 / - | 7 | Partial capture |
| 09-02 09:37 | 10m | -20 / -6 | IZ3CIX | -9 / -18 | 7 | ✓ Full exchange observed |
| 09-02 09:36 | 10m | -20 / - | YO3GNF | - / -11 | 2 | ✓ Closing fragment |
| 09-02 09:34 | 10m | -17 / - | DF6QN | - / -15 | 2 | ✓ Closing fragment |
| 09-02 09:30 | 10m | - / - | I5IIL | -10 / - | 8 | Partial capture |
| 09-02 09:30 | 10m | -22 / - | F1OBJ | - / -8 | 2 | ✓ Closing fragment |
| 09-02 09:23 | 10m | - / -2 | IK4LDZ | -3 / - | 4 | ✓ Closing fragment |
| 09-02 09:23 | 10m | - / -4 | IU0VOG | -9 / - | 2 | ✓ Closing fragment |
| 08-28 09:38 | 10m | -24 / +5 | CU2AP | -20 / - | 2 | ✓ Closing observed |
| 08-27 09:22 | 10m | - / - | IU1NGS | -6 / - | 8 | Partial capture |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 093915 -20 1639 IZ3CIX EX8MEM RR73 093930 -8 1177 EX8MEM IZ3CIX 73 093930 +12 2977 EX8MEM IU5BJS JN53 (x2) 094015 -20 1640 4Z5KU EX8MEM -09 094030 +8 2976 EX8MEM IU5BJS JN53 (x5) 093430 -22 1639 HB9ACA EX8MEM RR73 (x2) 093700 -22 1639 IZ4DYU EX8MEM -09 (x2) 093915 -23 1640 R1ZW EX8MEM 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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