SM4TYA — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving SM4TYA, decoded by SO8OO in southeastern Poland. 24 FT8 messages attributed to this token as transmitter, on 80m, 60m, 40m, 20m, across 6 UTC dates in the available aggregate history. Observed between 2026-06-20 and 2026-09-03.
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 24 FT8 messages attributed to SM4TYA as the transmitting token by decoded message structure across 6 UTC dates in the available aggregate history. The largest monitored-band total was 60 m (46%), followed by 40 m (25%) and 20 m (25%). Several six-hour UTC windows tied for the largest share (67%), so no unique busiest interval is claimed. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -11 dB.
Overview
Bands
Last attributed message: 2026-09-03 03:55 UTC
Observed FT8 message patterns
- Attributed sample
- 24 messages
- Active dates
- 6 UTC dates
- Estimated median S/N
- -11 dB
- Estimated 10th-90th percentile
- -17 to -2 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 4, moderate (-15 to -9 dB) 12, 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 SM4TYA 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 SM4TYA
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
- JP71 · 8 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 1,352 km (approx.)
- Last such locator decoded
- 2026-09-02 21:13 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 | SM4TYA S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 09-03 03:53 | 40m | -9 / - | TL8GD | - / -19 | 5 | Partial capture |
| 09-01 04:28 | 60m | -10 / -6 | SP9UPH | -1 / -3 | 5 | ✓ Full exchange observed |
| 09-01 04:26 | 60m | -10 / -12 | G8OO | -1 / -6 | 7 | ✓ Full exchange observed |
| 09-01 04:26 | 60m | - / - | PC2F | -18 / - | 3 | Partial capture |
| 09-01 04:23 | 60m | -5 / - | D44TWO | - / -15 | 7 | ✓ Closing fragment |
| 07-27 14:06 | 20m | -14 / - | F5IXN | -14 / +2 | 6 | ✓ Full exchange observed |
| 07-27 14:03 | 20m | -15 / - | <...> | - / -12 | 2 | Partial capture |
| 07-08 18:39 | 20m | - / -7 | JY5IB | -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 225645 -21 2059 TN8GD SM4TYA JP71 035315 -11 469 TL8GD SM4TYA R-19 (x5)
UTC dB Audio Message 211315 -24 1644 RI1FJL SM4TYA JP71
UTC dB Audio Message 042645 -18 1962 SM4TYA PC2F JO22 042645 -2 658 SM4TYA G8OO JO02 042715 -16 1963 SM4TYA PC2F JO22 042715 +1 658 SM4TYA G8OO JO02 042745 -21 1963 SM4TYA PC2F JO22 042745 -2 658 SM4TYA G8OO JO02 042800 -10 1963 G8OO SM4TYA -06 042815 -1 658 SM4TYA G8OO R-12 042830 -9 1963 G8OO SM4TYA RR73 042845 -2 1826 SM4TYA SP9UPH JO90 042845 +1 658 SM4TYA G8OO 73 042900 -8 1963 SP9UPH SM4TYA -03 042915 +3 2064 SM4TYA SP9UPH R-06 042930 -11 1963 SP9UPH SM4TYA RR73 042945 -4 2064 SM4TYA SP9UPH 73
UTC dB Audio Message 183915 -12 1388 SM4TYA JY5IB -07 (x2) 140315 -17 913 <...> SM4TYA JP71 (x2) 140630 -14 913 SM4TYA F5IXN JN23 (x2) 140715 -13 913 F5IXN SM4TYA +02 140730 -13 913 SM4TYA F5IXN R+11 140745 -16 913 F5IXN SM4TYA RR73 140800 -16 913 SM4TYA F5IXN 73 140845 -11 913 DB5BC SM4TYA 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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