OK4SU — 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 OK4SU, decoded by SO8OO in southeastern Poland. 438 FT8 messages attributed to this token as transmitter, on 80m, 60m, 40m, 20m, 10m, across 23 UTC dates in the available aggregate history. Observed between 2026-06-10 and 2026-11-04.
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 438 FT8 messages attributed to OK4SU as the transmitting token by decoded message structure across 23 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (67%), followed by 20 m (27%) and 60 m (4%). Most decodes (77%) fell within the six-hour window 06:00-12:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -9 dB.
Overview
Bands
Last attributed message: 2026-11-04 09:51 UTC
Observed FT8 message patterns
- Attributed sample
- 438 messages
- Active dates
- 23 UTC dates
- Estimated median S/N
- -9 dB
- Estimated 10th-90th percentile
- -20 to +2 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 112, moderate (-15 to -9 dB) 110, strong (≥ -8 dB) 216.
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 OK4SU 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 OK4SU
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
- JN89 · 128 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 348 km (approx.)
- Last such locator decoded
- 2026-11-04 09:41 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 | OK4SU S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 11-04 09:50 | 40m | -4 / - | DA0M | - / -18 | 2 | Partial capture |
| 11-04 09:48 | 40m | -20 / - | 9A5MP | - / -30 | 2 | Partial capture |
| 11-04 09:45 | 40m | - / -6 | OE3RWR | -2 / - | 3 | ✓ Closing fragment |
| 11-04 09:41 | 40m | -20 / - | G0HSP | - / -17 | 2 | Partial capture |
| 11-04 09:39 | 40m | - / - | HA7TM | -2 / - | 2 | Partial capture |
| 11-04 09:37 | 40m | -21 / - | M0ELS | - / -11 | 5 | ✓ Closing fragment |
| 11-04 09:35 | 40m | -3 / - | DA0M | - / -3 | 4 | Partial capture |
| 11-04 09:31 | 40m | - / - | YL3ATJ | -23 / - | 2 | Partial capture |
| 11-04 09:31 | 40m | -18 / - | DG1RMY | - / -5 | 2 | ✓ Closing fragment |
| 11-04 09:30 | 40m | - / - | HA7TM | 0 / - | 2 | Partial capture |
| 11-04 09:25 | 40m | -9 / - | EI8HV | - / -20 | 3 | Partial capture |
| 11-04 09:21 | 40m | -16 / - | PD7BDN | -18 / -3 | 6 | ✓ Closing observed |
| 11-04 09:21 | 40m | -10 / - | SP9UPH | -1 / - | 5 | ✓ Full exchange observed |
| 11-04 09:18 | 40m | -7 / -16 | OM1FED | -6 / - | 5 | Partial capture |
| 11-04 09:15 | 40m | -14 / - | M0OXO | - / -30 | 2 | Partial capture |
| 11-04 09:13 | 40m | - / - | HA7TM | +12 / - | 3 | Partial capture |
| 11-04 09:10 | 40m | -18 / -11 | DK3HV | -18 / - | 5 | ✓ Full exchange observed |
| 11-04 09:10 | 40m | -20 / - | OE6OCG | -4 / - | 7 | Partial capture |
| 11-04 09:05 | 40m | - / - | DG1RMY | -12 / - | 4 | Partial capture |
| 11-04 09:04 | 40m | - / -17 | DH2NJS | -17 / - | 9 | ✓ Closing fragment |
| 11-04 09:03 | 40m | -4 / - | SH4UMN | - / -3 | 4 | ✓ Closing fragment |
| 11-04 09:00 | 40m | +5 / - | GM4ZTO | - / -17 | 4 | Partial capture |
| 11-04 08:57 | 40m | -6 / - | YO3OBB | - / -12 | 2 | Partial capture |
| 11-03 18:29 | 40m | - / -12 | IZ0ZIP | -12 / - | 2 | ✓ Closing fragment |
| 11-03 18:20 | 40m | - / -9 | Z34BET | -12 / - | 2 | ✓ Closing fragment |
| 11-03 18:09 | 40m | - / - | F4BYA | -4 / - | 2 | Partial capture |
| 11-03 18:08 | 40m | - / - | PA3GAE | -11 / - | 3 | Partial capture |
| 11-03 17:51 | 40m | - / -16 | DC6MT | -10 / - | 3 | ✓ Closing fragment |
| 11-03 11:28 | 40m | -14 / - | OZ9FF | -15 / +2 | 4 | ✓ Closing observed |
| 11-03 11:13 | 40m | +6 / -5 | PI40EUDXF | -6 / -2 | 4 | ✓ Full exchange observed |
| 11-03 11:02 | 40m | -13 / -5 | OE9HGV | -15 / +2 | 5 | ✓ Full exchange observed |
| 11-03 11:02 | 40m | -13 / - | ON7COB | - / - | 3 | Partial capture |
| 11-03 10:31 | 40m | -13 / - | SM6ONT | - / -17 | 3 | ✓ Closing fragment |
| 11-03 10:30 | 40m | -10 / +8 | OE1AES | -4 / +10 | 5 | ✓ Full exchange observed |
| 11-03 10:28 | 40m | -8 / - | PI40EUDXF | - / - | 2 | ✓ Closing fragment |
| 11-03 10:28 | 40m | - / +4 | S55OO | -8 / - | 2 | ✓ Closing fragment |
| 11-03 10:06 | 40m | - / +3 | S55OO | -4 / - | 5 | Partial capture |
| 11-03 10:05 | 40m | -12 / - | OE3FVU | - / -25 | 2 | ✓ Closing fragment |
| 11-02 07:07 | 40m | -6 / +4 | HB9ELE | +6 / - | 4 | ✓ Full exchange observed |
| 11-02 06:48 | 40m | -10 / - | EA6AJW | - / -19 | 7 | ✓ Closing fragment |
| 10-29 19:53 | 80m | -6 / -14 | DC9JVN | -5 / -6 | 4 | ✓ Full exchange observed |
| 10-29 19:46 | 80m | +1 / -10 | IQ4JO | +4 / -5 | 4 | ✓ Full exchange observed |
| 10-29 19:31 | 60m | - / - | YL2NX | -4 / - | 2 | Partial capture |
| 10-29 19:30 | 60m | - / -16 | PA3BMB | -2 / - | 3 | ✓ Closing fragment |
| 10-29 18:58 | 60m | - / - | DL5SD | +10 / - | 5 | Partial capture |
| 10-29 18:58 | 60m | 0 / - | SP8BJU | - / -30 | 2 | ✓ Closing fragment |
| 10-29 18:58 | 60m | - / - | OE8PIT | +14 / - | 4 | Partial capture |
| 10-29 18:47 | 60m | -16 / +10 | SP2EWQ | -4 / - | 4 | ✓ Closing observed |
| 10-29 18:45 | 60m | - / - | SV1KWA | -10 / - | 2 | Partial capture |
| 10-29 18:45 | 60m | - / -5 | ES2AJ | 0 / - | 2 | Partial capture |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 093945 -21 1950 M0ELS OK4SU RR73 094000 -4 1676 OK4SU HA7TM JN97 094015 -23 1951 M0ELS OK4SU RR73 094045 -16 1675 CQ OK4SU JN89 (x2) 094145 -18 1665 G0HSP OK4SU -17 (x2) 094345 -17 1467 DF2KD OK4SU -19 094500 -3 1595 OK4SU OE3RWR JN88 (x3) 094845 -19 1318 9A5MP OK4SU -30 (x2) 095045 -4 2746 DA0M OK4SU -18 (x2)
UTC dB Audio Message 194445 +2 1048 CQ OK4SU JN89 (x4) 194645 +4 2326 IQ4JO OK4SU -05 194700 +8 2326 OK4SU IQ4JO R-10 194715 -2 2325 IQ4JO OK4SU RR73 194730 +1 2325 OK4SU IQ4JO 73 195145 -2 1047 CQ OK4SU JN89 (x3) 195300 -2 1048 OK4SU DC9JVN JN59 195315 -6 1048 DC9JVN OK4SU -06 195330 -8 1048 OK4SU DC9JVN R-14 (x2)
UTC dB Audio Message 185830 -2 1072 SP8BJU OK4SU R-30 185845 +13 334 OK4SU OE8PIT JN66 185845 +8 534 OK4SU DL5SD JO62 185900 +2 1072 SP8BJU OK4SU 73 185915 +17 334 OK4SU OE8PIT JN66 185915 +11 534 OK4SU DL5SD JO62 185945 +15 334 OK4SU OE8PIT JN66 185945 +10 534 OK4SU DL5SD JO62 (x3) 193000 -3 1072 OK4SU PA3BMB R-16 (x2) 193100 -12 533 OK4SU YL2NX KO27 193100 +1 1072 OK4SU PA3BMB 73 193200 +3 533 OK4SU YL2NX KO27
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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