ON4SS — 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 ON4SS, decoded by SO8OO in southeastern Poland. 180 FT8 messages attributed to this token as transmitter, on 40m, 20m, 10m, across 9 UTC dates in the available aggregate history. Observed between 2026-06-13 and 2026-10-22.
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 180 FT8 messages attributed to ON4SS as the transmitting token by decoded message structure across 9 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (88%), followed by 20 m (11%) and 10 m (1%). Most decodes (98%) fell within the six-hour window 18:00-00:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (77%); the estimated median was -2 dB.
Overview
Bands
Last attributed message: 2026-10-22 19:15 UTC
Observed FT8 message patterns
- Attributed sample
- 180 messages
- Active dates
- 9 UTC dates
- Estimated median S/N
- -2 dB
- Estimated 10th-90th percentile
- -20 to +4 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 33, moderate (-15 to -9 dB) 9, strong (≥ -8 dB) 138.
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 ON4SS 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 ON4SS
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 · 83 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 1,192 km (approx.)
- Last such locator decoded
- 2026-10-22 19:15 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 | ON4SS S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 10-22 19:35 | 40m | - / -6 | RN6MA | -2 / - | 2 | ✓ Closing fragment |
| 10-22 19:34 | 40m | - / -14 | EA3HLM | -22 / - | 2 | ✓ Closing fragment |
| 10-22 19:31 | 40m | - / - | RZ4FWA | -9 / - | 3 | Partial capture |
| 10-22 19:17 | 40m | - / - | F4MGP | -10 / - | 5 | Partial capture |
| 10-22 19:13 | 40m | +1 / - | UT3UQJ | - / -15 | 3 | Partial capture |
| 10-22 19:12 | 40m | -1 / - | UB6OCP | - / -2 | 3 | ✓ Closing fragment |
| 10-22 19:11 | 40m | -4 / - | U1BD | - / -8 | 2 | ✓ Closing fragment |
| 10-03 22:50 | 40m | - / -13 | R6LKG | -7 / - | 2 | ✓ Closing fragment |
| 10-03 22:40 | 40m | -19 / - | N8LE | - / -18 | 4 | Partial capture |
| 10-03 22:34 | 40m | -24 / -12 | RN6HK | -7 / - | 4 | ✓ Closing observed |
| 10-03 22:25 | 40m | - / -16 | UA9SY | -8 / - | 4 | ✓ Closing fragment |
| 10-03 22:21 | 40m | -23 / - | 8Z1IT | - / - | 2 | Partial capture |
| 10-03 22:14 | 40m | -22 / - | VK6BAD | - / - | 4 | Partial capture |
| 10-03 22:08 | 40m | -24 / -3 | IZ8PPI | -16 / - | 4 | ✓ Closing observed |
| 10-03 22:04 | 40m | -18 / - | LZ2VQ | - / -9 | 2 | ✓ Closing fragment |
| 10-03 22:03 | 40m | -18 / - | YO4NF | - / -7 | 2 | ✓ Closing fragment |
| 10-03 22:02 | 40m | -16 / - | SP6FME | - / -11 | 2 | ✓ Closing fragment |
| 10-03 21:58 | 40m | - / -15 | UR9QQ | -13 / - | 5 | ✓ Closing fragment |
| 10-03 21:55 | 40m | - / - | EA8CA | -14 / - | 3 | Partial capture |
| 10-03 21:53 | 40m | - / -15 | UW5IM | -6 / - | 3 | ✓ Closing fragment |
| 10-03 21:51 | 40m | -16 / -5 | IU8RFW | -15 / -9 | 4 | ✓ Full exchange observed |
| 09-19 22:19 | 40m | +10 / - | IK0CHU | +8 / -3 | 6 | ✓ Full exchange observed |
| 09-19 22:18 | 40m | +10 / - | RN3YN | - / -12 | 4 | ✓ Closing fragment |
| 08-28 22:16 | 40m | +1 / -3 | F5OYA/P | -10 / -3 | 5 | ✓ Full exchange observed |
| 08-28 22:13 | 40m | +2 / +2 | DB0CUI | -6 / -4 | 6 | ✓ Full exchange observed |
| 08-28 22:11 | 40m | +1 / - | JY5IB | - / -11 | 3 | ✓ Closing fragment |
| 08-28 22:10 | 40m | +1 / - | AJ4OA | - / -13 | 2 | ✓ Closing fragment |
| 08-28 22:08 | 40m | +2 / - | M7GOA | - / -11 | 2 | ✓ Closing fragment |
| 08-28 22:05 | 40m | -2 / - | UX7QV | -20 / 0 | 4 | ✓ Closing observed |
| 08-28 21:59 | 40m | -2 / +3 | DL5DQZ | +13 / -2 | 5 | ✓ Full exchange observed |
| 08-28 21:58 | 40m | -2 / -15 | R1AV | -12 / -13 | 4 | ✓ Full exchange observed |
| 08-28 21:56 | 40m | 0 / -9 | IZ5IOM | -11 / -7 | 5 | ✓ Full exchange observed |
| 08-28 21:51 | 40m | -2 / - | IU2VUZ | - / -17 | 2 | ✓ Closing fragment |
| 08-28 21:50 | 40m | -3 / - | EB2EMZ | -19 / -5 | 9 | ✓ Full exchange observed |
| 08-28 21:47 | 40m | -6 / - | DL1EDR | 0 / +1 | 5 | ✓ Full exchange observed |
| 08-28 21:44 | 40m | - / +5 | G0RVY | +7 / - | 3 | ✓ Closing fragment |
| 08-28 21:43 | 40m | +1 / - | UX7QV | - / -5 | 3 | ✓ Closing fragment |
| 08-28 21:42 | 40m | 0 / -6 | UA9CR | +1 / -4 | 4 | ✓ Full exchange observed |
| 08-28 21:41 | 40m | 0 / - | SP7TF | - / -4 | 2 | ✓ Closing fragment |
| 08-28 21:37 | 40m | +5 / - | F6BHK | 0 / -4 | 9 | ✓ Closing observed |
| 08-28 21:34 | 40m | +4 / +2 | OM3PR | -14 / -15 | 4 | ✓ Full exchange observed |
| 08-28 21:33 | 40m | -2 / +1 | DK0ACI | 0 / 0 | 4 | ✓ Full exchange observed |
| 08-28 21:31 | 40m | +2 / 0 | R6OU | +6 / -5 | 4 | ✓ Full exchange observed |
| 08-28 21:31 | 40m | +4 / - | SP7TF | - / -7 | 2 | Partial capture |
| 08-28 21:29 | 40m | -4 / -5 | PD0LBY | 0 / -11 | 6 | ✓ Full exchange observed |
| 08-28 21:26 | 40m | +3 / - | UN7PPV | - / -15 | 3 | ✓ Closing fragment |
| 08-28 21:25 | 40m | +4 / -6 | DL9KM | +4 / -3 | 5 | ✓ Full exchange observed |
| 08-28 21:23 | 40m | +2 / +2 | PC2J | +10 / - | 3 | ✓ Closing observed |
| 08-21 23:34 | 20m | -2 / - | HH2JR | - / - | 2 | Partial capture |
| 08-21 23:30 | 20m | -4 / - | HH2JR | - / - | 3 | Partial capture |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 191500 +2 1871 CQ ON4SS JO21 (x2) 191745 -8 2105 ON4SS F4MGP JN04 (x5) 193115 -8 1773 ON4SS RZ4FWA LO23 (x3) 193315 -16 1873 ON4SS EA3HKY RR73 193415 -22 1871 ON4SS EA3HLM -14 (x2) 193545 -3 1871 ON4SS RN6MA -06 (x2)
UTC dB Audio Message 231045 -3 1726 HH2JR ON4SS JO21 (x15)
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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