ON4CAS — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving ON4CAS, decoded by SO8OO in southeastern Poland. 97 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, across 4 UTC dates in the available aggregate history. Observed between 2026-07-06 and 2026-08-25.
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 97 FT8 messages attributed to ON4CAS as the transmitting token by decoded message structure across 4 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (73%), followed by 20 m (23%) and 80 m (4%). Most decodes (99%) fell within the six-hour window 14:00-20:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -16 dB.
Overview
Bands
Last attributed message: 2026-08-25 14:49 UTC
Observed FT8 message patterns
- Attributed sample
- 97 messages
- Active dates
- 4 UTC dates
- Estimated median S/N
- -16 dB
- Estimated 10th-90th percentile
- -20 to -9 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 56, moderate (-15 to -9 dB) 32, strong (≥ -8 dB) 9.
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 ON4CAS 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 ON4CAS
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
- JO21 · 71 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 1,192 km (approx.)
- Last such locator decoded
- 2026-08-25 14:49 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 | ON4CAS S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 09-16 09:41 | 40m | - / -8 | DL6EL | -11 / - | 3 | ✓ Closing fragment |
| 09-16 08:33 | 40m | - / - | DL6EL | -9 / - | 3 | Partial capture |
| 08-25 14:40 | 20m | -20 / - | <...> | - / +8 | 2 | Partial capture |
| 08-25 14:31 | 20m | -10 / - | OH2GT | - / -12 | 3 | ✓ Closing fragment |
| 08-25 11:39 | 20m | - / -15 | IQ4JO | +4 / - | 3 | ✓ Closing fragment |
| 07-18 12:41 | 40m | - / -19 | SP9D | -15 / - | 2 | Partial capture |
| 07-09 14:30 | 20m | -12 / - | <...> | - / - | 2 | Partial capture |
| 07-08 19:24 | 80m | -6 / -11 | DO1GMT | -12 / -7 | 4 | ✓ Full exchange observed |
| 07-08 19:22 | 80m | -10 / -7 | <...> | -3 / -6 | 3 | Partial capture |
| 07-06 19:46 | 40m | -14 / -22 | US3LX | -10 / -4 | 5 | ✓ Full exchange observed |
| 07-06 19:42 | 40m | - / -9 | S55A | -14 / - | 2 | Partial capture |
| 07-06 19:38 | 40m | - / -13 | RN6MA | -8 / - | 3 | Partial capture |
| 07-06 19:34 | 40m | - / - | RD6OZ | -16 / - | 2 | Partial capture |
| 07-06 19:31 | 40m | -15 / - | SP5DUJ | - / -14 | 3 | ✓ Closing fragment |
| 07-06 19:25 | 40m | -12 / -11 | UR5KCR | -8 / -10 | 6 | ✓ Full exchange observed |
| 07-06 19:10 | 40m | - / -12 | RZ6AKF | -9 / - | 2 | Partial capture |
| 07-06 19:07 | 40m | - / -9 | R5FQ | -10 / - | 2 | Partial capture |
| 07-06 18:56 | 40m | - / -16 | RN6MA | -10 / - | 3 | Partial capture |
| 07-06 18:52 | 40m | -18 / -22 | UR4QWW | -18 / -3 | 4 | ✓ Full exchange observed |
| 07-06 18:46 | 40m | -17 / - | EA3HWN | -19 / +8 | 4 | ✓ Closing observed |
| 07-06 18:08 | 40m | -16 / -14 | E70SZ | -12 / -1 | 5 | ✓ Full exchange observed |
| 07-06 18:06 | 40m | -16 / - | LB6MJ | - / -5 | 2 | ✓ Closing fragment |
| 07-06 18:05 | 40m | - / 0 | DC5LZ | -17 / - | 2 | ✓ Closing fragment |
| 07-06 17:26 | 40m | - / -8 | DL4JTH | -18 / - | 3 | ✓ Closing fragment |
| 07-06 17:21 | 40m | - / -8 | OK1DLA | -9 / - | 3 | ✓ Closing fragment |
| 07-06 16:36 | 40m | - / - | EU2ABM | -20 / - | 2 | Partial capture |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 194730 -16 1164 US3LX ON4CAS RR73 194745 -10 1078 ON4CAS US3LX 73 194800 -16 1164 CQ ON4CAS JO21 (x3) 124100 -14 2414 ON4CAS SP9D JO90 (x2) 125530 -20 2129 ON4CAS SP2L RR73 145600 -21 1680 ON4CAS DL0SOP -13 083330 -9 2110 ON4CAS DL6EL JN57 (x6)
UTC dB Audio Message 143030 -8 1706 CQ ON4CAS JO21 143045 -11 2040 ON4CAS RW4HBD LO53 143100 -9 1705 OH2GT ON4CAS -12 (x3) 143300 -8 1705 CQ ON4CAS JO21 (x6) 144045 -17 1268 <...> ON4CAS R+08 (x3) 144900 -24 1887 CQ ON4CAS JO21
UTC dB Audio Message 192230 -12 2758 <...> ON4CAS JO21 192245 -3 1108 ON4CAS <...> -07 192300 -7 2758 <...> ON4CAS R-06 192400 -4 2758 DO1GMT ON4CAS JO21 192415 -14 1649 ON4CAS DO1GMT -11 192430 -7 2758 DO1GMT ON4CAS R-07 192445 -9 1649 ON4CAS DO1GMT RR73
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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