ON8DX — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving ON8DX, decoded by SO8OO in southeastern Poland. 185 FT8 messages attributed to this token as transmitter, on 60m, 40m, 20m, 10m, across 10 UTC dates in the available aggregate history. Observed between 2026-06-08 and 2026-09-15.
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 185 FT8 messages attributed to ON8DX as the transmitting token by decoded message structure across 10 UTC dates in the available aggregate history. The largest monitored-band total was 60 m (56%), followed by 20 m (18%) and 10 m (14%). Most decodes (63%) fell within the six-hour window 16:00-22:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's moderate S/N range (60%); the estimated median was -14 dB.
Overview
Bands
Last attributed message: 2026-09-15 17:28 UTC
Observed FT8 message patterns
- Attributed sample
- 185 messages
- Active dates
- 10 UTC dates
- Estimated median S/N
- -14 dB
- Estimated 10th-90th percentile
- -20 to -9 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 59, moderate (-15 to -9 dB) 111, strong (≥ -8 dB) 15.
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 ON8DX 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 ON8DX
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
- JN29 · 113 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 1,206 km (approx.)
- Last such locator decoded
- 2026-09-15 17:28 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 | ON8DX S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 09-15 17:23 | 60m | -20 / - | DF1DN | -20 / - | 2 | ✓ Closing observed |
| 09-15 17:21 | 60m | -20 / +2 | SM6XVI | -11 / - | 4 | ✓ Closing observed |
| 09-13 02:01 | 60m | - / - | F5MYK | -6 / - | 2 | Partial capture |
| 09-13 01:55 | 60m | -20 / - | WO3U | - / -14 | 2 | ✓ Closing fragment |
| 09-13 01:54 | 60m | - / - | F5MYK | -5 / - | 3 | Partial capture |
| 09-11 03:46 | 40m | - / -19 | RZ6L | +6 / - | 3 | ✓ Closing fragment |
| 09-11 03:34 | 40m | - / -5 | K1JAK | -15 / - | 4 | Partial capture |
| 09-11 03:23 | 40m | - / -11 | W6NWS | -5 / - | 2 | ✓ Closing fragment |
| 09-11 03:21 | 40m | - / -6 | R6OK | -5 / - | 3 | ✓ Closing fragment |
| 09-11 03:10 | 40m | - / -11 | RX3ASQ | -21 / - | 3 | ✓ Closing fragment |
| 09-09 21:17 | 60m | -15 / +2 | DL2YMG | -12 / +5 | 4 | ✓ Full exchange observed |
| 09-09 21:14 | 60m | -16 / - | G3RPF | - / -4 | 2 | ✓ Closing fragment |
| 09-09 21:12 | 60m | -15 / - | CT7ARQ | - / -10 | 3 | ✓ Closing fragment |
| 09-09 21:08 | 60m | -14 / - | GX4RAF/P | - / - | 2 | ✓ Closing fragment |
| 09-09 21:05 | 60m | -8 / -1 | OZ1LGJ | -14 / +10 | 5 | ✓ Full exchange observed |
| 09-09 21:04 | 60m | -11 / -4 | DL1SRS | -10 / -2 | 4 | ✓ Full exchange observed |
| 09-09 21:02 | 60m | -11 / -1 | DC7KM | +6 / - | 5 | ✓ Full exchange observed |
| 09-09 21:00 | 60m | -12 / -7 | G3UHU | -1 / -1 | 7 | ✓ Full exchange observed |
| 09-09 21:00 | 60m | -12 / +1 | HB9FUR | -18 / +4 | 5 | ✓ Full exchange observed |
| 09-09 20:57 | 60m | - / -8 | SP5JMA | -10 / - | 2 | ✓ Closing fragment |
| 09-09 20:57 | 60m | -14 / -4 | DL1UDO | -1 / - | 8 | ✓ Full exchange observed |
| 09-09 20:55 | 60m | -9 / +6 | 4U1A | -2 / - | 2 | Partial capture |
| 09-09 17:57 | 60m | -14 / - | DG1WP | -21 / +2 | 4 | ✓ Closing observed |
| 09-09 17:50 | 60m | -11 / +10 | DL9BDR | -17 / -5 | 5 | ✓ Full exchange observed |
| 09-09 17:48 | 60m | -16 / +4 | DJ1PQ | -12 / -4 | 4 | ✓ Full exchange observed |
| 09-09 17:47 | 60m | -16 / +1 | 9A7BB | -2 / +1 | 5 | ✓ Full exchange observed |
| 09-09 17:45 | 60m | -16 / - | G7RVH | - / -9 | 2 | ✓ Closing fragment |
| 09-09 17:42 | 60m | -14 / -7 | OE5OBR | -13 / -17 | 8 | ✓ Full exchange observed |
| 09-09 17:40 | 60m | - / -9 | IK0BAL | -8 / - | 6 | ✓ Closing fragment |
| 09-09 17:39 | 60m | -16 / -5 | G6GA | +1 / +9 | 5 | ✓ Full exchange observed |
| 09-09 17:39 | 60m | -15 / +9 | OZ1SMB | +6 / +5 | 7 | ✓ Full exchange observed |
| 08-31 02:44 | 40m | -8 / - | ZZ2DX | - / - | 4 | Partial capture |
| 08-31 02:41 | 40m | -16 / - | OA4ENG | - / - | 3 | Partial capture |
| 08-27 23:25 | 40m | - / - | EB3JT | -13 / - | 7 | Partial capture |
| 08-27 23:23 | 40m | -20 / - | TN8GD | - / -13 | 2 | Partial capture |
| 07-23 01:18 | 40m | -20 / - | EW2GI | - / -10 | 2 | ✓ Closing fragment |
| 07-23 01:15 | 40m | -20 / - | UB4CJS | - / -4 | 2 | ✓ Closing fragment |
| 07-23 01:09 | 40m | -24 / -20 | RK6DV | -23 / - | 2 | ✓ Closing observed |
| 07-13 19:42 | 40m | - / +6 | ON4CHK/BOTA | -14 / - | 2 | Partial capture |
| 07-11 04:02 | 20m | -12 / - | SV9MBH | - / -11 | 2 | ✓ Closing fragment |
| 07-11 03:52 | 20m | -10 / -18 | KS4OT | -7 / -1 | 7 | ✓ Full exchange observed |
| 07-11 03:50 | 20m | -12 / - | N8FRJ | - / -7 | 3 | ✓ Closing fragment |
| 07-11 03:45 | 20m | -14 / -2 | KV3R | -8 / +10 | 4 | ✓ Full exchange observed |
| 07-11 03:35 | 20m | -12 / -23 | OD5KU | +4 / -21 | 4 | ✓ Full exchange observed |
| 07-07 02:05 | 20m | -4 / -15 | SP5EXA | -2 / - | 6 | ✓ Full exchange observed |
| 07-03 18:07 | 40m | - / -15 | OK2USB | -2 / - | 2 | ✓ Closing fragment |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 171930 -17 1430 CQ ON8DX JN29 172030 -20 1429 MM0HVU ON8DX 73 172100 -18 1430 CQ ON8DX JN29 172115 -11 983 ON8DX SM6XVI JO66 (x2) 172200 -20 1430 SM6XVI ON8DX RR73 172215 -12 983 ON8DX SM6XVI 73 172330 -20 1430 DF1DN ON8DX RR73 172345 -20 2038 ON8DX DF1DN 73 172400 -17 1430 CQ ON8DX JN29 (x6)
UTC dB Audio Message 031015 -21 1183 ON8DX RX3ASQ KO95 (x3) 032115 -5 2042 ON8DX R6OK KN87 (x3) 032345 -5 1892 ON8DX W6NWS -11 (x2) 033415 -14 2089 ON8DX K1JAK FN53 (x4) 034645 +4 1894 ON8DX RZ6L KN97 (x3)
UTC dB Audio Message 035230 -15 668 CQ ON8DX JN29 035245 -6 2381 ON8DX KS4OT EM83 (x2) 035330 -10 669 KS4OT ON8DX -01 035345 -8 2381 ON8DX KS4OT R-18 (x4) 035600 -12 669 CQ ON8DX JN29 (x2) 040200 -10 669 SV9MBH ON8DX -11 (x2) 041130 -11 669 CQ ON8DX JN29 041200 -12 668 W4GGJ ON8DX RR73 041730 -11 668 CQ ON8DX JN29
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.
FT8DB and SO8OO WebSDR are a hobby project maintained solo. ☕ Buy me a coffee