ON4ASV — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving ON4ASV, decoded by SO8OO in southeastern Poland. 2,201 FT8 messages attributed to this token as transmitter, on 160m, 80m, 60m, 40m, 20m, 10m, across 47 UTC dates in the available aggregate history. Observed between 2026-06-07 and 2026-09-14.
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 2,201 FT8 messages attributed to ON4ASV as the transmitting token by decoded message structure across 47 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (52%), followed by 40 m (36%) and 10 m (7%). Most decodes (67%) fell within the six-hour window 15:00-21:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (84%); the estimated median was +1 dB.
Overview
Bands
Last attributed message: 2026-09-14 20:57 UTC
Observed FT8 message patterns
- Attributed sample
- 2,201 messages
- Active dates
- 47 UTC dates
- Estimated median S/N
- +1 dB
- Estimated 10th-90th percentile
- -11 to +14 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 91, moderate (-15 to -9 dB) 254, strong (≥ -8 dB) 1,856.
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 ON4ASV 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 ON4ASV
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
- JO11 · 834 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 1,331 km (approx.)
- Last such locator decoded
- 2026-09-14 20:56 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 | ON4ASV S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 09-14 20:56 | 40m | +6 / - | R3PA | - / -11 | 3 | ✓ Closing fragment |
| 09-14 20:55 | 40m | +9 / - | RA3TD | -17 / - | 2 | ✓ Closing observed |
| 09-14 20:53 | 40m | +8 / - | R9LY | -13 / -10 | 5 | ✓ Full exchange observed |
| 09-14 20:51 | 40m | +16 / - | RD7O | +12 / -5 | 5 | ✓ Full exchange observed |
| 09-14 20:50 | 40m | +16 / -10 | RK7D | +6 / -3 | 5 | ✓ Full exchange observed |
| 09-14 20:41 | 60m | -2 / - | <...> | - / - | 5 | Partial capture |
| 09-14 20:28 | 80m | 0 / +1 | II6IGTO | -17 / -19 | 3 | Partial capture |
| 09-14 20:19 | 80m | +2 / -9 | II6IALU | +1 / -2 | 3 | Partial capture |
| 09-14 20:14 | 80m | +2 / +9 | II9IAGM | +2 / 0 | 3 | Partial capture |
| 09-14 19:59 | 80m | +8 / +6 | II8IHBC | +3 / -7 | 3 | Partial capture |
| 09-14 19:51 | 60m | +6 / - | II0IHMG | - / -13 | 3 | Partial capture |
| 09-14 19:46 | 60m | -1 / - | II7IABB | - / -18 | 2 | Partial capture |
| 09-14 19:43 | 60m | 0 / - | II8IHBC | - / - | 3 | Partial capture |
| 09-14 19:37 | 40m | +12 / - | II6IGTO | - / -8 | 3 | Partial capture |
| 09-14 19:36 | 40m | +13 / - | SV9QWC | -13 / -9 | 4 | ✓ Closing observed |
| 09-14 19:34 | 40m | +21 / +2 | R2PU | 0 / -10 | 5 | ✓ Full exchange observed |
| 09-14 19:32 | 40m | +18 / - | RX6LMA | - / -8 | 3 | ✓ Closing fragment |
| 09-14 19:29 | 40m | +24 / -1 | RV3DMM | -1 / -11 | 6 | ✓ Full exchange observed |
| 09-14 19:27 | 40m | +16 / - | PH82LIB | - / -6 | 2 | Partial capture |
| 09-13 17:23 | 40m | 0 / - | RU5A | - / -13 | 3 | ✓ Closing fragment |
| 09-13 17:20 | 40m | -1 / -7 | R4PEQ | -10 / -3 | 5 | ✓ Full exchange observed |
| 09-13 17:16 | 40m | +6 / +6 | R3VE | -13 / -4 | 3 | ✓ Full exchange observed |
| 09-13 17:14 | 40m | +3 / - | R3NAW | - / -20 | 6 | Partial capture |
| 09-13 17:10 | 40m | +10 / - | RA0AB | - / - | 6 | Partial capture |
| 09-13 17:08 | 40m | +9 / - | RZ0SW | - / -13 | 3 | ✓ Closing fragment |
| 09-13 17:07 | 40m | +12 / - | UB4CLH | - / - | 2 | Partial capture |
| 09-13 17:05 | 40m | +8 / -9 | RZ2B | +9 / - | 5 | Partial capture |
| 09-13 17:02 | 40m | +7 / -3 | IK5GUQ | -16 / -15 | 5 | ✓ Full exchange observed |
| 09-13 17:01 | 40m | +10 / -3 | RU4SS | -10 / -5 | 5 | ✓ Full exchange observed |
| 09-13 17:00 | 40m | +12 / - | DG6GR | - / -10 | 2 | ✓ Closing fragment |
| 09-13 16:58 | 40m | +13 / - | RA1AGA | - / -16 | 3 | ✓ Closing fragment |
| 09-13 16:52 | 40m | +8 / - | R3PE | -15 / -9 | 3 | ✓ Closing observed |
| 09-13 16:51 | 40m | +8 / - | UB1ATR | - / -14 | 2 | ✓ Closing fragment |
| 09-13 16:49 | 40m | +8 / - | R3PE | - / - | 2 | Partial capture |
| 09-13 16:01 | 20m | -23 / - | RJ3F | - / -1 | 2 | Partial capture |
| 09-13 15:53 | 20m | -18 / - | UA1APB | - / -7 | 3 | ✓ Closing fragment |
| 09-13 15:44 | 20m | -24 / - | RQ6B | - / - | 3 | ✓ Closing fragment |
| 09-11 17:28 | 40m | +10 / - | II9IAGM | - / - | 2 | Partial capture |
| 09-11 17:24 | 40m | +15 / -10 | R9FFH | -9 / -6 | 5 | Partial capture |
| 09-11 17:22 | 40m | +14 / -6 | II8IHBC | -6 / -8 | 2 | Partial capture |
| 09-11 16:43 | 40m | +10 / - | RA3XFR | -10 / -12 | 4 | ✓ Closing observed |
| 09-11 16:41 | 40m | +7 / -8 | UA3DNK | -10 / -12 | 5 | ✓ Full exchange observed |
| 09-11 16:39 | 40m | +7 / - | RA4HG | -10 / -10 | 5 | ✓ Closing observed |
| 09-11 16:39 | 40m | +8 / -5 | R5DT | -4 / -9 | 5 | ✓ Full exchange observed |
| 09-11 16:38 | 40m | +8 / - | R8QA | - / -12 | 2 | ✓ Closing fragment |
| 09-08 21:07 | 40m | +14 / - | RW6PA | - / -20 | 3 | ✓ Closing fragment |
| 09-08 21:03 | 40m | +15 / - | CX6TU | - / -15 | 3 | ✓ Closing fragment |
| 09-08 20:59 | 40m | +13 / - | VO1BE | - / -8 | 3 | ✓ Closing fragment |
| 09-08 20:55 | 40m | +8 / - | 5N0YEN | - / -21 | 5 | ✓ Closing fragment |
| 09-08 20:52 | 40m | +9 / -11 | TC2EYL | 0 / -13 | 6 | ✓ Full exchange observed |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 205200 +13 2774 ON4ASV RD7O +14 205215 +17 2774 RD7O ON4ASV R-05 205230 +11 2774 ON4ASV RD7O RR73 205245 +11 2773 RD7O ON4ASV 73 205300 -16 246 ON4ASV DL9AN -15 205330 +9 2115 R9LY ON4ASV JO11 205345 -13 2116 ON4ASV R9LY +13 205400 +7 2115 R9LY ON4ASV R-10 205415 -13 2116 ON4ASV R9LY RR73 205430 +9 2115 R9LY ON4ASV 73 205530 +9 2115 RA3TD ON4ASV RR73 205545 -17 2115 ON4ASV RA3TD 73 205645 +5 1834 R3PA ON4ASV JO11 (x3)
UTC dB Audio Message 144615 -12 757 RW3XB ON4ASV R+00 194315 -3 1533 II8IHBC ON4ASV JO11 (x3) 194445 +5 785 II9IAGM ON4ASV JO11 194645 -1 1846 II7IABB ON4ASV JO11 (x2) 195115 +8 873 II0IHMG ON4ASV JO11 (x3) 204115 +1 1176 <...> ON4ASV JO11 (x5)
UTC dB Audio Message 194530 -8 1960 ON4ASV UB3YCK RR73 195915 +6 2529 II8IHBC ON4ASV JO11 195930 +3 2529 ON4ASV II8IHBC +06 195945 +10 2530 II8IHBC ON4ASV R-07 200000 +0 2529 ON4ASV RR73; IK8PGE <...> +06 200745 +5 2208 HF100PKP ON4ASV R-02 201445 +4 711 II9IAGM ON4ASV JO11 201500 +2 712 ON4ASV II9IAGM +09 201515 +0 711 II9IAGM ON4ASV R+00 201915 +5 1775 II6IALU ON4ASV JO11 201930 +1 1775 ON4ASV II6IALU -09 201945 +0 1775 II6IALU ON4ASV R-02 202815 +2 1144 II6IGTO ON4ASV JO11 202830 -17 1145 ON4ASV II6IGTO +01 202845 -2 1145 II6IGTO ON4ASV R-19
UTC dB Audio Message 131430 +23 882 BH4CVO ON4ASV -13 (x2) 153945 -24 1868 EH3ST ON4ASV R-06 154200 -19 1253 RU3GC ON4ASV 73 154400 -24 1480 RQ6B ON4ASV JO11 (x3) 154945 -24 1395 <...> ON4ASV R-07 155300 -18 1232 UA1APB ON4ASV JO11 (x3) 155715 -23 1362 <...> ON4ASV JO11 160115 -24 1925 RJ3F ON4ASV JO11 (x2) 160530 -19 1285 UB1CDJ ON4ASV 73
UTC dB Audio Message 201645 -17 2790 R5BS ON4ASV R-25 201700 +10 2791 ON4ASV R5BS RR73 201715 -16 2790 R5BS ON4ASV R-25 201730 +7 2791 ON4ASV R5BS RR73 201745 -17 2790 R5BS ON4ASV R-25 201800 -1 2791 ON4ASV R5BS RR73 201945 -6 2585 F4IFK ON4ASV R-22 (x4) 202700 -14 1114 F5RQQ ON4ASV JO11 202715 +1 1114 ON4ASV F5RQQ +00 202730 -12 1114 F5RQQ ON4ASV R-05 202745 -3 1114 ON4ASV F5RQQ RR73 202800 -16 1114 F5RQQ ON4ASV 73
UTC dB Audio Message 152645 -11 1577 EG5ECL ON4ASV JO11 (x3) 153015 -15 1578 DO9BAU ON4ASV +03 (x2) 153330 -14 1578 <...> ON4ASV JO11 (x4) 153745 -1 1578 R1BPZ ON4ASV JO11 114645 -14 1577 9A4BP/P ON4ASV JO11 (x3) 114845 -1 1577 9A2HX/P ON4ASV -01 (x2)
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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