NO4J — 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 NO4J, decoded by SO8OO in southeastern Poland. 86 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, across 12 UTC dates in the available aggregate history. Observed between 2026-08-24 and 2026-11-05.
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 86 FT8 messages attributed to NO4J as the transmitting token by decoded message structure across 12 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (64%), followed by 20 m (23%) and 80 m (13%). Most decodes (73%) fell within the six-hour window 23:00-05:00 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: 2026-11-05 05:03 UTC
Observed FT8 message patterns
- Attributed sample
- 86 messages
- Active dates
- 12 UTC dates
- Estimated median S/N
- -16 dB
- Estimated 10th-90th percentile
- -22 to -9 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 43, moderate (-15 to -9 dB) 36, strong (≥ -8 dB) 7.
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 NO4J 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 NO4J
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
- EM90 · 27 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 8,294 km (approx.)
- Last such locator decoded
- 2026-11-05 04:39 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 | NO4J S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 11-05 05:00 | 40m | -20 / - | SP3SLA | - / - | 2 | ✓ Closing fragment |
| 11-04 01:03 | 40m | - / - | DH2NJS | -20 / - | 2 | Partial capture |
| 11-04 00:59 | 40m | - / - | DH2NJS | -19 / - | 3 | Partial capture |
| 10-31 03:12 | 40m | -19 / -7 | TA1MB | -12 / - | 4 | Partial capture |
| 10-31 02:14 | 40m | -19 / - | ON4UP/P | - / -16 | 2 | Partial capture |
| 10-30 01:53 | 40m | - / -12 | IN3WZS | -14 / - | 2 | Partial capture |
| 10-28 00:21 | 40m | - / -7 | R2SL | +16 / - | 2 | ✓ Closing fragment |
| 10-06 23:23 | 40m | -19 / - | EX7CQ | - / - | 4 | Partial capture |
| 10-06 23:13 | 40m | -19 / - | EX7CQ | - / - | 3 | Partial capture |
| 10-04 23:57 | 40m | -19 / - | 4QSO | - / - | 2 | Partial capture |
| 10-04 23:40 | 40m | -14 / - | TJ1GD | - / -16 | 3 | ✓ Closing fragment |
| 10-03 04:13 | 40m | - / - | F1IQH | -4 / - | 4 | Partial capture |
| 10-03 04:13 | 40m | - / -10 | F1PBZ | -8 / - | 4 | ✓ Closing fragment |
| 10-03 04:13 | 40m | - / -11 | RZ1OA | -8 / - | 3 | ✓ Closing fragment |
| 10-03 04:09 | 40m | -18 / -12 | Z61DX | +3 / - | 9 | ✓ Closing observed |
| 10-03 04:04 | 40m | - / - | RD3FY | -1 / - | 3 | Partial capture |
| 10-03 03:53 | 40m | - / -13 | OD5ET | -6 / - | 2 | ✓ Closing fragment |
| 10-03 03:53 | 40m | - / - | UT2AU | +10 / - | 2 | Partial capture |
| 10-03 03:46 | 40m | - / -13 | R2EC | +6 / - | 3 | ✓ Closing fragment |
| 10-03 03:45 | 40m | - / -22 | RA3AJT | +9 / - | 3 | ✓ Closing fragment |
| 09-24 01:38 | 40m | - / - | RW6MMU | -19 / - | 3 | Partial capture |
| 09-22 01:44 | 40m | -12 / - | KE5IJS | - / +3 | 3 | ✓ Closing fragment |
| 09-22 01:42 | 40m | -13 / - | 7Z1DN | - / - | 5 | Partial capture |
| 09-22 01:35 | 40m | -15 / -18 | A61DD | -7 / -15 | 10 | ✓ Full exchange observed |
| 09-19 02:42 | 40m | -21 / -3 | 9K2WA | -6 / -6 | 3 | ✓ Full exchange observed |
| 09-19 02:36 | 40m | -20 / -9 | UB6C | +10 / -14 | 5 | ✓ Full exchange observed |
| 09-19 02:33 | 40m | - / - | F4HXJ | -2 / - | 7 | Partial capture |
| 09-19 02:31 | 40m | -24 / - | HA3KZ | - / -12 | 2 | Partial capture |
| 08-31 08:26 | 20m | - / - | F4JQH | -10 / - | 2 | Partial capture |
| 08-28 09:10 | 20m | - / - | PD3PAM | -15 / - | 6 | Partial capture |
| 08-28 09:09 | 20m | -11 / - | G5MJF | - / -13 | 2 | ✓ Closing fragment |
| 08-28 09:08 | 20m | -7 / - | M7PHE | - / -12 | 2 | Partial capture |
| 08-28 09:07 | 20m | -8 / -15 | EA5ITW | -2 / -16 | 6 | ✓ Full exchange observed |
| 08-28 09:06 | 20m | -10 / - | EW4TT | - / - | 2 | Partial capture |
| 08-28 09:01 | 20m | -12 / - | EA1FJD | -8 / 0 | 3 | ✓ Closing observed |
| 08-28 09:01 | 20m | -16 / - | SP6AXW | - / -9 | 2 | ✓ Closing fragment |
| 08-28 09:00 | 20m | -16 / - | VK3EVE | - / -15 | 2 | ✓ Closing fragment |
| 08-28 08:58 | 20m | -18 / -11 | UA3QNA | +17 / - | 4 | ✓ Closing observed |
| 08-28 08:52 | 20m | -12 / - | EW6DM/P | - / - | 2 | Partial capture |
| 08-28 07:37 | 20m | - / -8 | IZ7QFP | +2 / - | 2 | Partial capture |
| 08-27 02:22 | 80m | - / -12 | UT3UZ | +12 / - | 9 | Partial capture |
| 08-27 02:14 | 80m | -20 / -15 | OK1AMF | +9 / -22 | 7 | ✓ Full exchange observed |
| 08-27 02:14 | 80m | - / -12 | UT3UZ | +12 / - | 11 | Partial capture |
| 08-27 02:11 | 80m | -21 / - | HI4T | - / -6 | 3 | ✓ Closing fragment |
| 08-27 02:10 | 80m | - / -12 | CX1UI | -24 / - | 2 | Partial capture |
| 08-27 02:09 | 80m | -16 / - | W5RB | - / +1 | 2 | ✓ Closing fragment |
| 08-27 02:09 | 80m | - / - | F5MYK | -4 / - | 2 | Partial capture |
| 08-27 02:08 | 80m | -16 / - | WB8SCG | -24 / +10 | 3 | ✓ Closing observed |
| 08-27 02:06 | 80m | -22 / - | PY6HD | -11 / -15 | 2 | ✓ Closing observed |
| 08-26 10:21 | 20m | - / -6 | M7TPT | -17 / - | 2 | ✓ Closing fragment |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 031245 -12 2085 NO4J TA1MB -07 (x2) 022900 -10 2750 NO4J A41KB -12 005800 +1 867 NO4J DK5CW +01 005900 -6 498 NO4J DL1BBO JO43 005930 -18 1778 NO4J DH2NJS JO50 (x5) 043915 -7 490 DH7WW/P NO4J EM90 050015 -22 1923 SP3SLA NO4J R+11 (x2) 050315 -22 1923 DG5AAG NO4J RR73 050400 -24 1831 NO4J IZ8DBJ JN70
UTC dB Audio Message 090830 +1 317 NO4J EA5ITW RR73 090845 -5 1414 M7PHE NO4J -12 (x2) 090945 -9 1414 G5MJF NO4J R-13 091000 -19 2264 NO4J PD3PAM JO32 091015 -13 1414 G5MJF NO4J 73 091030 -23 2264 NO4J PD3PAM JO32 091045 -8 1414 BD4SDO NO4J -15 091100 -16 2264 NO4J PD3PAM JO32 (x4) 082630 -12 1106 NO4J F4JQH JN12 (x2) 084515 -7 2406 NO4J EW8CW RR73
UTC dB Audio Message 021700 +4 1901 NO4J OK1AMF RR73 021730 +6 800 NO4J UT3UZ -12 (x5) 022245 -13 839 NO4J F5LOW -10 022300 +13 800 NO4J UT3UZ -12 (x8)
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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