YO3AI — 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 YO3AI, decoded by SO8OO in southeastern Poland. 2,409 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, across 15 UTC dates in the available aggregate history. Observed between 2026-07-12 and 2026-10-21.
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 2,409 FT8 messages attributed to YO3AI as the transmitting token by decoded message structure across 15 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (93%), followed by 40 m (6%) and 20 m (2%). Most decodes (55%) fell within the six-hour window 21:00-03:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (76%); the estimated median was -3.4 dB.
Overview
Bands
Last attributed message: 2026-10-21 21:44 UTC
Observed FT8 message patterns
- Attributed sample
- 2,409 messages
- Active dates
- 15 UTC dates
- Estimated median S/N
- -3.4 dB
- Estimated 10th-90th percentile
- -12 to +3.9 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 108, moderate (-15 to -9 dB) 460, strong (≥ -8 dB) 1,841.
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 YO3AI 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 YO3AI
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
- KN44 · 1,387 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 813 km (approx.)
- Last such locator decoded
- 2026-10-21 21:41 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 | YO3AI S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 10-21 21:43 | 80m | -2 / - | TA1MB | - / - | 2 | ✓ Closing fragment |
| 10-21 21:38 | 80m | +6 / -8 | RA4FUT | -15 / -1 | 5 | ✓ Full exchange observed |
| 10-21 21:34 | 80m | - / - | ON4MAP | -2 / - | 5 | Partial capture |
| 10-21 21:34 | 80m | +2 / -9 | UX5UO | +14 / - | 5 | ✓ Full exchange observed |
| 10-21 21:30 | 80m | 0 / -15 | F1IQH | -12 / -24 | 6 | ✓ Full exchange observed |
| 10-21 21:28 | 80m | -4 / -6 | OH2FQV | +5 / +6 | 6 | ✓ Full exchange observed |
| 10-21 21:26 | 80m | -6 / -8 | 9A60CBM | -4 / +3 | 2 | Partial capture |
| 10-21 21:17 | 80m | +2 / - | EA1EYL | - / -19 | 9 | Partial capture |
| 10-21 21:15 | 80m | +4 / -12 | PE2AE | +2 / -6 | 5 | ✓ Full exchange observed |
| 10-21 21:11 | 80m | +5 / -15 | R2EA/P | -2 / 0 | 6 | Partial capture |
| 10-21 21:10 | 80m | +3 / 0 | IZ5ILK | +1 / +5 | 5 | ✓ Full exchange observed |
| 10-21 21:09 | 80m | +2 / - | VK6BAD | - / -19 | 2 | Partial capture |
| 10-21 20:59 | 80m | -2 / +2 | DO6SHB | +9 / 0 | 7 | ✓ Full exchange observed |
| 10-21 20:54 | 80m | +1 / -25 | PA0LDE | -12 / -21 | 7 | ✓ Full exchange observed |
| 10-21 20:50 | 80m | - / -10 | EU1EU | +2 / - | 2 | ✓ Closing fragment |
| 10-21 20:49 | 80m | -5 / +1 | EW8DU | -13 / - | 4 | ✓ Closing observed |
| 10-19 21:02 | 40m | - / - | F6ECB | -8 / - | 2 | ✓ Closing fragment |
| 10-19 20:54 | 40m | - / -3 | HB9CNU | -11 / - | 3 | ✓ Closing fragment |
| 10-19 20:51 | 40m | - / -9 | IV3IHV | -13 / - | 2 | ✓ Closing fragment |
| 10-19 20:46 | 40m | - / -18 | G7RCQ | -11 / - | 4 | Partial capture |
| 10-19 20:40 | 40m | - / -7 | RJ3DC | -11 / - | 3 | ✓ Closing fragment |
| 10-19 20:28 | 40m | - / -9 | IU0DHV | -5 / - | 2 | ✓ Closing fragment |
| 10-19 20:22 | 40m | - / -4 | R4FDD | -14 / - | 2 | ✓ Closing fragment |
| 10-19 19:38 | 40m | -21 / - | OH1TEV | - / +3 | 2 | Partial capture |
| 10-19 19:33 | 40m | -22 / - | RC5F | - / -5 | 3 | ✓ Closing fragment |
| 10-19 19:30 | 40m | -18 / -12 | OR1A | -20 / -16 | 2 | Partial capture |
| 10-19 19:26 | 40m | -22 / +2 | 2I0WAI | -7 / -7 | 7 | ✓ Full exchange observed |
| 10-18 21:31 | 40m | -22 / -8 | EA1FAW | -15 / -20 | 6 | Partial capture |
| 10-18 21:27 | 40m | -22 / - | UX7BM | - / -13 | 2 | ✓ Closing fragment |
| 10-18 21:26 | 40m | - / 0 | R6GY | -5 / - | 3 | ✓ Closing fragment |
| 10-18 21:21 | 40m | -18 / - | YL3ASK | - / -13 | 3 | Partial capture |
| 10-18 21:04 | 40m | - / +5 | R2EG | -14 / - | 2 | ✓ Closing fragment |
| 10-18 21:00 | 40m | - / +4 | R2AL | -8 / - | 2 | ✓ Closing fragment |
| 10-15 21:37 | 80m | - / -13 | IK4TVP | +1 / - | 5 | Partial capture |
| 10-11 05:24 | 80m | -12 / - | TO3USP/R | - / -24 | 3 | Partial capture |
| 10-11 05:19 | 80m | -15 / -25 | PA3CPS | 0 / - | 4 | ✓ Closing observed |
| 10-11 05:16 | 80m | -10 / -18 | SP7FFY | -5 / -8 | 5 | ✓ Full exchange observed |
| 10-11 05:10 | 80m | - / -12 | SP5MXZ | +6 / - | 2 | ✓ Closing fragment |
| 10-11 05:09 | 80m | - / +5 | YO5IB | -13 / - | 3 | ✓ Closing fragment |
| 10-11 05:03 | 80m | -5 / -17 | F1NQP | -4 / -4 | 4 | Partial capture |
| 10-11 04:50 | 80m | -4 / - | DF9JL | -6 / -16 | 3 | ✓ Closing observed |
| 10-11 04:43 | 80m | -3 / - | YO8OE | 0 / +7 | 3 | ✓ Closing observed |
| 10-11 04:39 | 80m | - / - | DF8IJ | -13 / - | 3 | Partial capture |
| 10-11 04:39 | 80m | - / 0 | DK8CX | -1 / - | 3 | ✓ Closing fragment |
| 10-11 04:31 | 80m | - / -8 | F6ECI | +6 / - | 3 | ✓ Closing fragment |
| 10-11 04:20 | 80m | -1 / +3 | DG1YHP | -6 / -10 | 5 | ✓ Full exchange observed |
| 10-11 04:10 | 80m | +7 / - | SP3DVO | - / -18 | 7 | ✓ Closing fragment |
| 10-11 04:00 | 80m | +4 / +1 | YO4NF | +6 / - | 4 | ✓ Full exchange observed |
| 10-11 03:58 | 80m | +4 / -11 | EA5D | -11 / -3 | 3 | ✓ Full exchange observed |
| 10-11 03:55 | 80m | +9 / - | UA3ADE | +3 / 0 | 3 | ✓ Closing observed |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 213645 +0 345 YO3AI ON4MAP JO20 213700 +4 2115 CQ YO3AI KN44 (x2) 213815 -15 2116 YO3AI RA4FUT LO23 213830 +6 2116 RA4FUT YO3AI -01 213845 -16 2117 YO3AI RA4FUT R-08 213900 +6 2116 RA4FUT YO3AI RR73 213915 -15 2119 YO3AI RA4FUT 73 213930 +5 2116 CQ YO3AI KN44 (x4) 214300 -1 2116 TA1MB YO3AI +19 (x2) 214430 +0 2115 EA1EYL YO3AI -12
UTC dB Audio Message 204145 -12 1491 YO3AI RJ3DC 73 204615 -10 482 YO3AI G7RCQ IO91 (x4) 205000 -24 2099 CQ YO3AI KN44 205145 -12 1613 YO3AI IV3IHV R-09 (x2) 205445 -21 2099 YO3AI HB9CNU JN37 (x3) 205800 -24 2098 HB9ZHK YO3AI RR73 205900 -24 2098 CQ YO3AI KN44 210215 -7 1019 YO3AI F6ECB IN94 (x2)
UTC dB Audio Message 214100 -2 519 YO3AI S57MPU JN76
UTC dB Audio Message 075945 -11 1764 <...> YO3AI KN44 (x2) 081515 -10 1763 RI1FJL YO3AI KN44 (x13)
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.
CW
No CW receptions recorded for this callsign in the last 30 days.
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