UA3YFS — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving UA3YFS, decoded by SO8OO in southeastern Poland. 63 FT8 messages attributed to this token as transmitter, on 40m, across 3 UTC dates in the available aggregate history. Observed between 2026-09-19 and 2026-09-22.
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 63 FT8 messages attributed to UA3YFS as the transmitting token by decoded message structure across 3 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (100%). Several six-hour UTC windows tied for the largest share (100%), so no unique busiest interval is claimed. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -12 dB.
Overview
Observed FT8 message patterns
- Attributed sample
- 63 messages
- Active dates
- 3 UTC dates
- Estimated median S/N
- -12 dB
- Estimated 10th-90th percentile
- -20 to +2 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 13, moderate (-15 to -9 dB) 25, strong (≥ -8 dB) 25.
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 UA3YFS 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 UA3YFS
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
- KO73 · 35 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 990 km (approx.)
- Last such locator decoded
- 2026-09-22 12:30 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 | UA3YFS S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 09-22 12:26 | 40m | -15 / -12 | OZ9FF | -8 / -11 | 5 | ✓ Full exchange observed |
| 09-21 14:12 | 40m | - / - | RR73; | -5 / - | 2 | Partial capture |
| 09-21 14:11 | 40m | -6 / - | RK3DJW | - / +7 | 3 | ✓ Closing fragment |
| 09-21 14:08 | 40m | - / -15 | DL6KA | -11 / - | 3 | Partial capture |
| 09-21 14:07 | 40m | -9 / - | SM3JBO | - / -12 | 2 | ✓ Closing fragment |
| 09-21 14:05 | 40m | -10 / -5 | R7HL | -6 / - | 3 | ✓ Closing observed |
| 09-21 14:03 | 40m | -8 / - | RA0SCZ | - / -10 | 3 | ✓ Closing fragment |
| 09-21 14:01 | 40m | - / - | OE8PIT | +1 / - | 4 | Partial capture |
| 09-21 13:14 | 40m | - / -19 | HG0NPJ | 0 / - | 2 | ✓ Closing fragment |
| 09-19 15:50 | 40m | - / - | RV3DFC | -6 / - | 2 | Partial capture |
| 09-19 15:49 | 40m | +4 / - | RM5F | -2 / - | 4 | Partial capture |
| 09-19 15:45 | 40m | -1 / -9 | UB3ZKO | -13 / -10 | 11 | ✓ Full exchange observed |
| 09-19 15:45 | 40m | -1 / -8 | UB4CJS | -1 / +3 | 10 | ✓ Full exchange observed |
| 09-19 15:43 | 40m | -2 / - | RU3SN | - / -4 | 2 | ✓ Closing fragment |
| 09-19 14:03 | 40m | -20 / - | R3RRC/P | - / -17 | 2 | ✓ Closing fragment |
| 09-19 14:01 | 40m | - / -18 | RA1TR | -19 / - | 2 | Partial capture |
| 09-19 13:58 | 40m | -20 / -12 | RN3TT | -16 / -7 | 3 | ✓ Full exchange observed |
| 09-19 13:40 | 40m | -15 / -2 | R6FMK | -8 / -12 | 7 | ✓ Full exchange observed |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 141330 -4 529 UA3YFS RR73; R4FS <...> +06 122330 -23 2137 HA0AA UA3YFS KO73 122430 -21 2137 CQ UA3YFS KO73 (x3) 122615 -11 687 UA3YFS ON1DGN -18 122630 -16 2135 OZ9FF UA3YFS KO73 122645 -11 2316 UA3YFS OZ9FF -12 122700 -14 2135 OZ9FF UA3YFS R-11 122715 -5 2316 UA3YFS OZ9FF RR73 122730 -14 2135 OZ9FF UA3YFS 73 122800 -15 2134 CQ UA3YFS KO73 122930 -14 2421 RA3LJ UA3YFS R+11 123030 -14 2420 CQ UA3YFS KO73 123300 -12 2419 RA9CAD UA3YFS -14
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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