ON4TH — 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 ON4TH, decoded by SO8OO in southeastern Poland. 299 FT8 messages attributed to this token as transmitter, on 160m, 80m, 60m, 40m, 20m, across 27 UTC dates in the available aggregate history. Observed between 2026-06-13 and 2026-10-31.
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 299 FT8 messages attributed to ON4TH as the transmitting token by decoded message structure across 27 UTC dates in the available aggregate history. The largest monitored-band total was 60 m (63%), followed by 80 m (26%) and 160 m (4%). Most decodes (63%) fell within the six-hour window 17:00-23:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (81%); the estimated median was +1 dB.
Overview
Bands
Last attributed message: 2026-10-31 03:37 UTC
Observed FT8 message patterns
- Attributed sample
- 299 messages
- Active dates
- 27 UTC dates
- Estimated median S/N
- +1 dB
- Estimated 10th-90th percentile
- -11 to +11 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 4, moderate (-15 to -9 dB) 52, strong (≥ -8 dB) 243.
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 ON4TH 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 ON4TH
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
- JO20 · 212 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 1,194 km (approx.)
- Last such locator decoded
- 2026-10-31 03:36 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 | ON4TH S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 10-31 03:38 | 160m | - / - | R1AV | -15 / - | 3 | Partial capture |
| 10-31 03:38 | 160m | - / - | OK1DXR | +3 / - | 6 | Partial capture |
| 10-31 03:36 | 160m | +2 / - | 6W/IK2HKT | - / -6 | 2 | Partial capture |
| 10-30 06:08 | 60m | - / - | F5OYA/P | -19 / - | 6 | Partial capture |
| 10-30 05:55 | 60m | - / - | F5OYA/P | -18 / - | 13 | Partial capture |
| 10-30 05:46 | 60m | +10 / - | 6W/IK2HKT | - / -5 | 13 | Partial capture |
| 10-29 21:58 | 60m | +2 / - | 6W/IK2HKT | - / -26 | 47 | Partial capture |
| 10-29 04:31 | 60m | 0 / - | K0QC | - / - | 2 | Partial capture |
| 10-29 04:26 | 60m | - / - | ON8WR | -15 / - | 2 | Partial capture |
| 10-29 04:25 | 60m | -2 / - | N4GPR | - / -19 | 2 | ✓ Closing fragment |
| 10-29 04:20 | 60m | +1 / - | TI4LAS | - / -13 | 7 | ✓ Closing fragment |
| 10-28 17:00 | 80m | - / - | UA4FKT | -4 / - | 2 | Partial capture |
| 10-28 16:58 | 80m | +4 / - | XX9TXN | - / -19 | 4 | ✓ Closing fragment |
| 10-27 22:23 | 80m | +6 / - | TA1MB | - / - | 7 | Partial capture |
| 10-27 22:18 | 80m | -2 / - | BG9MM | - / - | 2 | Partial capture |
| 10-26 04:15 | 60m | +8 / - | S9R | - / - | 2 | Partial capture |
| 10-25 22:22 | 60m | -10 / - | S9R | - / -18 | 5 | ✓ Closing fragment |
| 10-25 22:14 | 80m | +1 / -16 | RN6HK | +10 / - | 9 | ✓ Closing observed |
| 10-25 22:12 | 80m | +2 / -15 | SP6AXW | -9 / -7 | 6 | ✓ Full exchange observed |
| 10-25 22:12 | 80m | +3 / -4 | YO6LM | -4 / -14 | 7 | ✓ Full exchange observed |
| 10-25 22:11 | 80m | +4 / - | RC9WC | - / -19 | 2 | ✓ Closing fragment |
| 10-25 22:09 | 80m | +3 / - | OD5ZZ | - / -16 | 3 | ✓ Closing fragment |
| 10-25 22:05 | 80m | -6 / - | K6UFO | - / - | 3 | Partial capture |
| 10-24 07:12 | 60m | -18 / - | G0ABI | - / +2 | 2 | ✓ Closing fragment |
| 10-22 00:49 | 60m | - / - | EB3JT | +1 / - | 7 | Partial capture |
| 10-22 00:49 | 60m | - / +2 | OS4K | -19 / - | 3 | Partial capture |
| 10-22 00:47 | 60m | +20 / - | 7P8GE | - / -25 | 3 | ✓ Closing fragment |
| 10-21 21:32 | 60m | +3 / +1 | GI5RPG | +8 / - | 3 | ✓ Closing observed |
| 10-21 21:29 | 60m | +11 / -5 | EY8MM | -14 / -7 | 9 | ✓ Full exchange observed |
| 10-19 02:58 | 40m | +4 / - | WX0CAS | - / - | 2 | ✓ Closing fragment |
| 10-15 20:18 | 60m | -10 / -5 | IZ4JMA | -9 / -6 | 5 | ✓ Full exchange observed |
| 10-15 20:18 | 60m | - / -16 | YO9IE | -9 / - | 3 | Partial capture |
| 10-15 20:16 | 60m | -5 / +8 | T77RN | -6 / -21 | 5 | ✓ Full exchange observed |
| 10-15 17:23 | 80m | - / - | DA6SHO | +12 / - | 3 | Partial capture |
| 10-15 17:23 | 80m | - / - | DO1MDO | -2 / - | 4 | Partial capture |
| 10-15 17:22 | 80m | - / -8 | R9WJ | -4 / - | 2 | Partial capture |
| 10-11 18:36 | 60m | -10 / - | H49A | - / - | 12 | Partial capture |
| 10-11 18:33 | 60m | -10 / +1 | G0AZH | -7 / -1 | 5 | ✓ Full exchange observed |
| 10-11 17:47 | 60m | -10 / - | H49A | - / - | 6 | Partial capture |
| 10-11 17:40 | 60m | -10 / - | H49A | - / - | 6 | Partial capture |
| 10-11 17:30 | 60m | 0 / - | H49A | - / - | 13 | Partial capture |
| 10-02 05:01 | 60m | +14 / - | 9T0MD | - / -15 | 3 | ✓ Closing fragment |
| 10-02 02:56 | 60m | -1 / - | N0MHL | - / - | 3 | Partial capture |
| 10-02 02:54 | 60m | -6 / -13 | VE2CKW | -16 / -6 | 4 | ✓ Full exchange observed |
| 10-02 02:52 | 60m | +4 / - | SP3SWJ | - / -2 | 2 | ✓ Closing fragment |
| 10-02 02:51 | 60m | +2 / - | WA3WNT | - / -14 | 2 | ✓ Closing fragment |
| 10-02 02:50 | 60m | +3 / - | N0MHL | - / - | 2 | Partial capture |
| 10-02 02:48 | 60m | +2 / - | HK5R | - / -20 | 3 | ✓ Closing fragment |
| 10-02 02:43 | 60m | -4 / - | DD6ZV | - / -19 | 2 | Partial capture |
| 10-02 02:39 | 60m | - / - | G0AZH | -6 / - | 7 | Partial capture |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 013245 -10 1332 RI1FJZ ON4TH 73 013430 +5 1796 ON4TH UA3AGW KO85 (x2) 214930 +0 908 ON4TH UA4FKT LO23 033645 +0 1358 6W/IK2HKT ON4TH JO20 (x2) 033800 +5 1301 ON4TH OK1DXR JO60 033830 -13 1358 ON4TH R1AV KP50 033830 +3 1301 ON4TH OK1DXR JO60 033900 -15 1358 ON4TH R1AV KP50 033900 +4 1301 ON4TH OK1DXR JO60 033930 -16 1358 ON4TH R1AV KP50 033930 +0 1301 ON4TH OK1DXR JO60 (x3)
UTC dB Audio Message 055800 -16 1162 ON4TH F5OYA/P JN13 (x15)
UTC dB Audio Message 221815 -2 1844 BG9MM ON4TH JO20 (x2) 222330 -11 854 TA1MB ON4TH JO20 (x7) 165815 +4 1586 XX9TXN ON4TH JO20 (x4) 170000 -4 1586 ON4TH UA4FKT LO23 (x2)
UTC dB Audio Message 053230 -14 2459 <...> ON4TH JO20 053445 -12 2458 K0SSD ON4TH JO20 053545 -11 2458 N0FX ON4TH JO20 (x2) 053645 -14 2458 K0SSD ON4TH JO20 (x2) 200745 -6 1790 V51WH ON4TH JO20 025800 -7 2710 WX0CAS ON4TH RR73 025815 +9 2710 ON4TH UA4FKT LO23 025830 +14 2710 WX0CAS ON4TH RR73
UTC dB Audio Message 161815 -14 2245 OX3LX ON4TH JO20 (x2) 182130 -10 2496 D2ACE ON4TH JO20 (x2) 182215 -2 2672 ON4TH D2ACE -01 (x2) 182300 -12 2497 D2ACE ON4TH 73 130115 -11 2539 RI1FJZ ON4TH JO20 (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.
CW
No CW receptions recorded for this callsign in the last 30 days.
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