DB3FS — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving DB3FS, decoded by SO8OO in southeastern Poland. 21 FT8 messages attributed to this token as transmitter, on 40m, across 1 UTC dates in the available aggregate history. Last observed 2026-09-09.
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 21 FT8 messages attributed to DB3FS as the transmitting token by decoded message structure across 1 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (100%). In this small sample, the estimated median decoder S/N was -2 dB; no usual signal pattern is inferred.
Overview
Observed FT8 message patterns
- Attributed sample
- 21 messages
- Active dates
- 1 UTC dates
- Estimated median S/N
- -2 dB
- Estimated 10th-90th percentile
- -8 to +6 dB
- Recurring-pattern threshold
- Not met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 0, moderate (-15 to -9 dB) 1, strong (≥ -8 dB) 20.
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 DB3FS in decoded directed-looking exchanges:
Most frequent locator attributed to DB3FS
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
- JO30 · 3 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 1,053 km (approx.)
- Last such locator decoded
- 2026-09-09 19:25 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 | DB3FS S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 09-09 19:38 | 40m | +4 / -7 | PD0IFI | +13 / -8 | 7 | ✓ Full exchange observed |
| 09-09 19:37 | 40m | -3 / -5 | PA3AGN | 0 / -11 | 6 | ✓ Full exchange observed |
| 09-09 19:37 | 40m | - / - | PD0ZAP | -8 / - | 3 | Partial capture |
| 09-09 19:36 | 40m | -2 / - | UT8SQ | - / -2 | 2 | ✓ Closing fragment |
| 09-09 19:36 | 40m | -6 / -22 | RA6OY | +10 / -8 | 7 | ✓ Full exchange observed |
| 09-09 19:35 | 40m | -7 / - | MM0YMG | - / -14 | 2 | ✓ Closing fragment |
| 09-09 19:31 | 40m | -4 / 0 | DL7DL | +2 / +1 | 7 | ✓ Full exchange observed |
| 09-09 19:29 | 40m | -6 / -15 | S51PV | -11 / -7 | 4 | ✓ Full exchange observed |
| 09-09 19:29 | 40m | -3 / - | UR4QWW | -4 / -15 | 4 | Partial capture |
| 09-09 19:25 | 40m | +5 / - | IS0/IK2YCW | -6 / -9 | 8 | ✓ Full exchange observed |
| 09-09 19:25 | 40m | - / -3 | R2EA | +4 / - | 3 | Partial capture |
| 07-25 19:23 | 40m | - / -9 | SP7SZJ | -22 / - | 2 | ✓ Closing fragment |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 193800 -5 243 RA6OY DB3FS RR73 193815 +11 242 DB3FS RA6OY 73 193815 -7 557 DB3FS PD0ZAP JO21 193815 +13 2790 DB3FS PD0IFI JO32 193815 +0 1142 DB3FS PA3AGN JO22 193830 -3 1142 PA3AGN DB3FS -11 193845 +13 2790 DB3FS PD0IFI JO32 193845 -1 1142 DB3FS PA3AGN R-05 193915 +14 2790 DB3FS PD0IFI JO32 193915 +3 1142 DB3FS PA3AGN 73 193930 +6 2791 PD0IFI DB3FS -08 193945 +12 2789 DB3FS PD0IFI R-07 194000 +2 2791 PD0IFI DB3FS RR73 194015 +12 2789 DB3FS PD0IFI 73 194245 -7 2406 EA2CD DB3FS -09
UTC dB Audio Message 195215 -11 3026 DB3FS JI4POR -18
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