ON4BMA — 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 ON4BMA, decoded by SO8OO in southeastern Poland. 334 FT8 messages attributed to this token as transmitter, on 40m, 20m, 10m, across 21 UTC dates in the available aggregate history. Observed between 2026-06-08 and 2026-10-23.
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 334 FT8 messages attributed to ON4BMA as the transmitting token by decoded message structure across 21 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (92%), followed by 20 m (4%) and 10 m (4%). Most decodes (63%) fell within the six-hour window 03:00-09:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -10 dB.
Overview
Bands
Last attributed message: 2026-10-23 05:43 UTC
Observed FT8 message patterns
- Attributed sample
- 334 messages
- Active dates
- 21 UTC dates
- Estimated median S/N
- -10 dB
- Estimated 10th-90th percentile
- -16 to -1 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 43, moderate (-15 to -9 dB) 160, strong (≥ -8 dB) 131.
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 ON4BMA 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 ON4BMA
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 · 287 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 1,192 km (approx.)
- Last such locator decoded
- 2026-10-23 05:43 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 | ON4BMA S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 10-23 05:41 | 40m | -6 / - | EW8ABG | - / - | 5 | Partial capture |
| 10-22 07:05 | 40m | -10 / - | SQ100LKK | - / -13 | 5 | Partial capture |
| 10-22 06:58 | 40m | -13 / - | VA3FZ | - / - | 13 | Partial capture |
| 10-22 06:49 | 40m | -10 / - | VK7AC | - / -10 | 10 | ✓ Closing fragment |
| 10-18 06:04 | 40m | -12 / - | YV5YDT | - / - | 8 | Partial capture |
| 10-18 05:48 | 40m | -12 / - | YV5YDT | - / - | 3 | Partial capture |
| 10-18 05:40 | 40m | -9 / - | YV5YDT | - / - | 10 | Partial capture |
| 10-18 05:32 | 40m | -12 / - | YV5YDT | - / -13 | 3 | Partial capture |
| 10-18 05:18 | 40m | -12 / - | YV5YDT | - / -16 | 14 | Partial capture |
| 10-18 05:12 | 40m | -8 / - | TI5GAX | - / - | 3 | Partial capture |
| 10-14 15:50 | 40m | -5 / - | RW9YA | - / - | 3 | Partial capture |
| 10-14 15:41 | 40m | - / - | S53AK | -1 / - | 3 | Partial capture |
| 10-14 15:34 | 40m | -8 / - | RW9YA | - / - | 20 | Partial capture |
| 10-14 15:25 | 40m | -8 / - | RW9YA | - / - | 8 | Partial capture |
| 10-14 15:14 | 40m | -4 / - | RW9YA | - / - | 5 | Partial capture |
| 10-14 15:08 | 40m | -10 / - | RW9YA | - / - | 2 | Partial capture |
| 10-11 06:08 | 40m | -9 / - | PP5GP | - / - | 9 | Partial capture |
| 10-11 06:04 | 40m | -14 / - | PY2DPM | - / -8 | 4 | ✓ Closing fragment |
| 10-11 06:00 | 40m | -13 / - | YY5EHT | - / -16 | 3 | ✓ Closing fragment |
| 10-11 05:44 | 40m | -8 / - | OA4ENG | - / - | 6 | Partial capture |
| 10-10 05:24 | 40m | -12 / - | HC5F | - / - | 20 | Partial capture |
| 10-08 05:45 | 40m | -20 / - | YY5EHT | - / - | 7 | Partial capture |
| 10-08 05:38 | 40m | -15 / - | YY5EHT | - / - | 3 | Partial capture |
| 10-06 06:16 | 40m | -15 / - | YY5EHT | - / - | 12 | Partial capture |
| 10-06 06:09 | 40m | -19 / - | YY5EHT | - / - | 6 | Partial capture |
| 10-06 06:06 | 40m | -20 / - | YY5EHT | - / - | 2 | Partial capture |
| 10-06 06:01 | 40m | -12 / - | YY5EHT | - / - | 2 | Partial capture |
| 10-06 05:46 | 40m | -11 / - | C5R | - / - | 7 | Partial capture |
| 10-06 05:40 | 40m | -12 / - | OA4ENG | - / - | 4 | Partial capture |
| 10-05 06:02 | 40m | -18 / - | ZL1OGX | - / - | 2 | Partial capture |
| 10-04 18:00 | 40m | -6 / - | LA5ZUA | - / -13 | 6 | ✓ Closing fragment |
| 10-02 19:05 | 40m | -8 / - | W3US | - / - | 4 | Partial capture |
| 09-30 22:03 | 40m | 0 / - | HK4QXX | - / - | 3 | Partial capture |
| 09-30 21:58 | 40m | 0 / - | BG7BVP | - / - | 5 | Partial capture |
| 09-30 21:56 | 40m | -5 / - | TF8KW | - / -1 | 3 | ✓ Closing fragment |
| 09-30 08:20 | 40m | -14 / - | W5VUY | - / - | 2 | Partial capture |
| 09-30 08:12 | 40m | -13 / - | W5VUY | - / - | 4 | Partial capture |
| 09-30 05:48 | 40m | -9 / - | OA4ENG | - / -19 | 3 | Partial capture |
| 09-30 05:42 | 40m | -7 / - | TI4LAS | - / - | 4 | ✓ Closing fragment |
| 09-30 05:39 | 40m | -4 / - | KF0GE | - / - | 3 | Partial capture |
| 09-30 05:32 | 40m | -3 / - | K7EOD | - / -20 | 3 | Partial capture |
| 09-30 05:29 | 40m | -4 / - | K7EOD | - / -20 | 2 | Partial capture |
| 09-30 05:25 | 40m | -7 / - | F6FDY | -4 / -8 | 3 | Partial capture |
| 09-28 18:10 | 40m | +2 / - | MI5JYK | - / - | 11 | Partial capture |
| 09-28 18:06 | 40m | +2 / - | MI5JYK | - / - | 2 | Partial capture |
| 09-28 18:01 | 40m | 0 / -6 | EU4BE | -16 / - | 15 | Partial capture |
| 09-08 18:12 | 40m | -7 / - | HB9TLL | - / - | 3 | Partial capture |
| 09-08 06:42 | 40m | - / - | DL3MIB | +8 / - | 7 | Partial capture |
| 09-08 06:41 | 40m | - / -14 | OZ3TT | +8 / - | 2 | ✓ Closing fragment |
| 09-07 16:14 | 40m | - / - | IK2ZJR | +1 / - | 3 | Partial capture |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 070315 -13 1777 VA3FZ ON4BMA JO21 (x5) 070545 -16 1777 SQ100LKK ON4BMA JO21 (x5) 054130 -4 1778 EW8ABG ON4BMA JO21 (x5)
UTC dB Audio Message 072600 -13 1049 ON4BMA ON1CH JO21 (x2)
UTC dB Audio Message 065600 -9 794 CQ ON4BMA JO21 065700 -13 794 LZ4VR ON4BMA -10 065715 -24 1538 ON4BMA ON1CH JO21 065730 -15 794 LZ4VR ON4BMA RR73 065745 -18 1538 ON4BMA ON1CH JO21 (x2) 065830 -9 794 ON1CH ON4BMA +24 065845 -11 1538 ON4BMA ON1CH R+12 065900 -14 794 ON1CH ON4BMA RR73 065915 -13 1538 ON4BMA ON1CH 73
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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